SYNAPTIC PHARMACEUTICAL CORP
10-K, 1998-03-27
COMMERCIAL PHYSICAL & BIOLOGICAL RESEARCH
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                       SECURITIES AND EXCHANGE COMMISSION
                              Washington, DC 20549
                                    FORM 10-K
                                    Mark One:
            [X] ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
                 SECURITIES EXCHANGE ACT OF 1934 (FEE REQUIRED)
                   For the fiscal year ended December 31, 1997
                                       OR
            [ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF
              THE SECURITIES EXCHANGE ACT OF 1934 (NO FEE REQUIRED)

                         Commission File Number 0-27324

                       SYNAPTIC PHARMACEUTICAL CORPORATION
             (Exact name of registrant as specified in its charter)

                                    Delaware
                          (State or other jurisdiction
                        of incorporation or organization)

                                215 College Road
                                   Paramus, NJ
                    (Address of principal executive offices)

                                   22-2859704
                      (I.R.S. Employer Identification No.)

                                      07652
                                   (Zip Code)

                                 (201) 261-1331
              (Registrant's telephone number, including area code)

               Securities registered pursuant to Section 12(b) of
                                    the Act:
                                      None

           Securities registered pursuant to Section 12(g) of the Act:
                     Common Stock, par value $.01 per share
        Rights to Purchase Series A Junior Convertible Preferred Stock,
                            par value $.01 per share
                                (Title of Class)

         Indicate  by check  mark  whether  the  registrant:  (1) has  filed all
reports  required to be filed by Section 13 or 15(d) of the Securities  Exchange
Act of 1934, as amended (the "Exchange Act"), during the preceding 12 months (or
for such shorter  period that the  registrant was required to file such reports)
and (2) has been subject to such filing requirements for the past 90 days.

                                    Yes X No

         Indicate by check mark if disclosure of delinquent  filers  pursuant to
Item 405 of Regulation S-K is not contained  herein,  and will not be contained,
to the best of  registrant's  knowledge,  in  definitive  proxy  or  information
statements  incorporated  by  reference  in Part  III of this  Form  10-K or any
amendment to this Form 10-K. [ ]

         The  approximate  aggregate  market  value of the voting and non voting
common  equity  held  by  non-affiliates  of the  registrant  was  approximately
$142,600,000  as of March 2, 1998,  based upon the  closing  price of the Common
Stock as reported on The Nasdaq Stock Market on such date.  For purposes of this
calculation, shares of Common Stock held by directors, officers and stockholders
whose  ownership in the  registrant  is known by the  registrant  to exceed five
percent have been  excluded.  This number is provided  only for purposes of this
report and does not represent an admission by either the  registrant or any such
person as to the status of such person.

         As of March 2, 1998,  there were 10,674,945  shares of the registrant's
Common Stock outstanding.

                       DOCUMENTS INCORPORATED BY REFERENCE

         Portions of the Synaptic Pharmaceutical Corporation Proxy Statement, to
be filed not later than 120 days after December 31, 1997, in connection with the
registrant's  1998  Annual  Meeting of  Stockholders,  referred to herein as the
"Proxy Statement," are incorporated by reference into Part III of this Report on
Form 10-K.



<PAGE>



                       SYNAPTIC PHARMACEUTICAL CORPORATION

      INDEX TO REPORT ON FORM 10-K FOR FISCAL YEAR ENDED DECEMBER 31, 1997


 
                                   Part I                                   Page
                                                                            ----
Item  1. Business...........................................................  1
Item  2. Properties......................................................... 30
Item  3. Legal Proceedings.................................................. 30
Item  4. Submission of Matters to a Vote of Securityholders................. 30

                                     Part II

Item  5. Market for Registrant's Common Equity and Related Stockholder
          Matters........................................................... 31
Item  6. Selected Financial Data............................................ 33
Item  7. Management's Discussion and Analysis of Financial Condition and
          Results of Operations............................................. 33
Item  8. Financial Statements............................................... 43
Item  9. Changes in and Disagreements with Accountants on Accounting and
          Financial Disclosure.............................................. 64

                                    Part III

Item 10. Directors and Executive Officers of the Registrant................. 65
Item 11. Executive Compensation............................................. 65
Item 12. Security Ownership of Certain Beneficial Owners and Management..... 65
Item 13. Certain Relationships and Related Transactions..................... 65

                                     Part IV

Item 14. Exhibits, Financial Statement Schedules and Reports on Form 8-K.... 66




                                       (i)

<PAGE>



                                     Part I


Item 1.  Business

Overview

         Synaptic Pharmaceutical  Corporation ("Synaptic" or the "Company") is a
biotechnology company engaged in the development of a broad platform of enabling
technology which it calls "human  receptor-targeted drug design technology." The
Company is utilizing  this  technology to discover and clone the genes that code
for human receptor  subtypes  associated with specific  disorders and is working
both  independently  and  together  with its  collaborative  partners  to design
compounds  that can  potentially  be  developed  as  drugs  for  treating  these
disorders.  In addition to conducting several internal programs,  the Company is
currently collaborating with Eli Lilly and Company ("Lilly"),  Merck & Co., Inc.
("Merck"),  Novartis  Pharma  AG  ("Novartis"),   the  Warner-  Lambert  Company
("Warner-Lambert")  and  Grunenthal  GmbH  ("Grunenthal")  on more  than  twelve
separate drug discovery programs covering ten therapeutic areas.

         Synaptic's human receptor-targeted drug design technology is the result
of an integrated approach to four life science fields:  molecular biology;  cell
biology;  pharmacology;  and chemistry,  including medicinal,  combinatorial and
computer-assisted chemistry. This technology allows chemists to focus their drug
discovery  efforts on a specific  human  receptor  subtype  target.  The Company
believes  that  its  technology  provides  three  distinct  advantages  over the
traditional  approach to drug discovery in which compounds are screened  against
animal tissues containing many different receptor subtypes.  First, by having an
isolated  receptor  subtype  as a target,  chemists  are  better  able to design
compounds  that  interact  with only the target of  interest  and not with other
receptors that may be responsible for side effects. Second, the Company believes
that using human  receptor  subtypes as drug design  targets will  substantially
reduce  the number of  problems  that often  arise  during the drug  development
process as a result of differences in a compound's  activity in humans  compared
to its activity in animal tissues.  Third, Synaptic believes that its technology
may be more  cost-effective  than traditional drug discovery because the Company
and its  collaborative  partners can eliminate or redesign  compounds that react
poorly with human  receptor  targets prior to initiating  the costly  activities
related to preclinical testing and clinical trials.

         Synaptic focuses its receptor and drug discovery  efforts on members of
a receptor  superfamily  known as "G  protein-coupled  receptors."  The  Company
selected  this  receptor  family  for  two  principal  reasons.  First,  many  G
protein-coupled  receptors  have been shown to be  effective  drug  targets,  as
evidenced  by  the  commercial  availability  of  drugs  for a wide  variety  of
therapeutic  applications  that  work by  means  of  their  interactions  with G
protein-coupled receptors. Second, the G protein-coupled receptor superfamily is
extremely  large and diverse  and,  based on several  estimates,  exceeds  1,000
receptors,  with its members being involved in the mediation of a broad array of
physiological  functions.  Accordingly,  the  Company  believes  that  there are
substantial  opportunities to use many members of the G protein-coupled receptor
superfamily as targets for novel drugs.

         The  Company  and Lilly have been  collaborating  since 1991 to develop
drugs for a variety of  therapeutic  applications.  One of their drug  discovery
programs, focused on the development of a drug for the treatment of migraine, is
in Phase II clinical  trials in Europe.  Two other programs that are the subject
of the  collaboration,  which are  focused on the  development  of drugs for the
prophylactic  treatment of migraine and for the treatment of depression,  are in
the late preclinical  stage of development.  In addition,  two programs that are
the subject of the collaboration,  which are focused on the development of drugs
for the treatment of smoking cessation and obesity, are in the early preclinical
stage of development. The Company and Merck have been collaborating since

                                        1

<PAGE>



1993 on a program  focused on the  development  of a drug for the  treatment  of
benign prostatic  hyperplasia  ("BPH").  This program is in the late preclinical
stage of testing. The Company and Novartis have been collaborating since 1994 on
a program  focused on the  development  of a drug for the  treatment of obesity.
This program is in the early preclinical stage of development. In July 1997, the
Company entered into a collaborative  arrangement with Warner-Lambert focused on
multiple  therapeutic  applications,  including obesity,  diabetes,  Alzheimer's
Disease, depression and pain. Finally, in January 1998, the Company entered into
a  collaborative  arrangement  with  Grunenthal.   Unlike  the  Company's  other
collaborations  which are  focused  on a single  receptor  family  but which may
result  in  drugs  for  multiple   therapeutic   applications,   the  Grunenthal
collaboration  is focused on the  development of drugs for a single  therapeutic
application--pain--but may involve multiple receptor families.

         Three  of  the  Company's  collaborative  partners,  Lilly,  Merck  and
Novartis,  provide the Company with financial support for research. In addition,
as part of its collaboration  with the Company,  Warner-Lambert is required upon
the occurrence of certain  events to provide the Company with financial  support
for research and, at the Company's  option,  to purchase  equity in the Company.
Each of these four  collaborative  partners is responsible  for all  development
costs and is required to make  payments to the Company upon the  achievement  of
certain  milestones  and to pay royalties to the Company based upon net sales of
any drugs resulting from its collaboration with the Company. With respect to the
Grunenthal  collaboration,  the Company and Grunenthal are responsible for their
own expenses  incurred  during the research  stage of any project  undertaken as
part  of  the  collaboration  but  will  each  be  responsible  for  50%  of all
development  costs incurred as part of the project with respect to any resulting
drug candidates up to the  commencement of Phase III clinical  trials.  Synaptic
will retain manufacturing and marketing rights in the United States,  Canada and
Mexico with respect to any drug  candidates  resulting  from the  collaboration,
while  Grunenthal  will retain  manufacturing  and  marketing  rights in Europe,
Central  America  (other than Mexico) and South America with respect to any such
candidates.  The two companies  will share these rights in all other  countries.
With  respect  to  each  country  in its  own  territories  and  in  the  shared
territories in which it desires to market a drug candidate, each of Synaptic and
Grunenthal  will be responsible  for conducting  Phase III clinical  trials,  if
required, for obtaining any necessary regulatory approval and for all associated
costs.

         In March 1998, the Company entered into an Option and License Agreement
(the "Glaxo Agreement") with Glaxo Group Limited ("Glaxo") pursuant to which the
Company granted Glaxo a license under its patent rights, as well as an option to
obtain an additional license under its patent rights, relating to certain of the
Company's  technology.  In consideration for the license and option,  Glaxo paid
the Company $2 million. In addition to the $2 million payment, Glaxo is required
to pay  royalties  to the Company  based upon net sales of drugs  covered by the
license.  An  additional  payment is required in order for Glaxo to exercise the
option to obtain the additional  license and, if Glaxo exercises the option,  it
is  required  to pay to the  Company  royalties  based  upon net  sales of drugs
covered by such additional  license,  as well as to make payments to the Company
upon the  achievement of certain  milestones.  Unlike the agreements with Lilly,
Merck,  Novartis,  Warner-Lambert  and Grunenthal,  the Glaxo Agreement does not
provide for any collaboration between the Company and Glaxo.

         In November  1997,  the Company  received net proceeds of  $33,822,000,
after deducting  offering expenses payable by the Company,  from an underwritten
public offering of its Common Stock.

         Certain   discussions  in  this  Report  refer  to  various  phases  of
preclinical  testing and clinical trials.  For a description of such phases, see
the footnotes in the table  entitled  "Summary of  Synaptic's  Receptor and Drug
Discovery  Programs" set forth under  "--Receptor  and Drug Discovery  Programs:
Focus on G Protein-Coupled Receptor Superfamily."


                                        2

<PAGE>



Business Strategy

         Synaptic's   business  strategy  is  to  develop,   together  with  its
collaborative  partners,  a broad array of drugs based upon the Company's  human
receptor-targeted  drug  design  technology.  This  strategy  consists  of  four
principal objectives, the first of which is to aggressively discover and clone G
protein-coupled  receptor  genes.  As of March 2, 1998,  Synaptic  had  received
United States  patents  relating to eleven of these  receptor  genes and related
drug discovery systems and several United States patent applications relating to
the Company's  receptor gene  discoveries  were  pending.  In addition,  several
corresponding  patents  had  been  issued  in  other  countries  and  additional
corresponding patent applications had been filed in other countries.

         The Company's  second  objective is to efficiently  discover and design
potential  drugs  through  the use of its human  receptor-targeted  drug  design
technology. The Company and its collaborative partners are using this technology
to design,  synthesize  and  optimize  compounds  for further  development.  The
Company's  two  approaches  to  designing  and  synthesizing  compounds  include
traditional  medicinal  chemistry  and the  newer  technology  of  combinatorial
chemistry,   each  of  which  is  supported  by  the   Company's   expertise  in
computer-assisted  molecular  modeling.  With  both  approaches,  the  Company's
chemists and  pharmacologists  use their knowledge of the structures of targeted
receptor subtypes to design and synthesize initial chemical  structures that are
then optimized. Synaptic's chemists are currently involved in six drug discovery
programs, three of which are being conducted in collaboration with the Company's
partners.  The  Company's  partners  may  select  compounds  for  testing in the
Company's  drug  discovery  systems  from the  Company's  existing  libraries of
compounds,  their own existing  libraries of  compounds or newly  discovered  or
designed compounds.

         The  Company's  third  objective is to leverage  resources and generate
royalty-based  revenues through  collaborations and licensing  arrangements with
pharmaceutical  companies.  Towards  this  objective,  the  Company  to date has
focused most of its  scientific  resources on the discovery and design phases of
the drug development  process and has entered into royalty-based  collaborations
in which its pharmaceutical partners participate in the early phases of the drug
development process and assume principal responsibility for preclinical testing,
clinical  trials and  commercialization.  In these  types of  arrangements,  the
Company's  collaborative  partners are generally required to provide the Company
with financial  support for research,  milestone  payments and royalties tied to
net sales of any drugs  resulting  from the  collaborations.  By  pursuing  this
objective, Synaptic gains access to the expertise and resources of its partners,
while  simultaneously  maintaining  relatively  low  capital  requirements.   In
addition to these collaborations, the Company has licensed certain patent rights
to Glaxo  under  the Glaxo  Agreement.  Glaxo is  conducting  the  research  and
development  activities relating to the license independently of Synaptic and is
required to pay Synaptic royalties tied to net sales of any drugs covered by the
license.

         The Company's fourth objective is to retain ownership rights to certain
products developed through the use of its technology.  The Company is seeking to
achieve this objective in a variety of manners, including the exploration of and
entry into  collaborations  with  pharmaceutical  companies in which the Company
increases  its  participation  in and  funding  of drug  development  activities
conducted as part of such collaborations. Through such arrangements, the Company
believes  that it may be able to gain access to  additional  chemistry,  in vivo
pharmacology, preclinical and clinical expertise, as well as to retain a greater
portion   of   the   downstream   financial   benefits   associated   with   the
commercialization of any products resulting from such arrangements.



                                        3

<PAGE>



Background

         The Role of Receptors in Controlling Cellular Function

         The human body coordinates its activities through  communication  among
its  great  variety  of  cells  and  tissues.  One of  the  principal  means  of
communication  occurs  through  chemical  signaling,  when one cell  releases  a
chemical messenger, called a "ligand," which ultimately binds to and activates a
protein  molecule,  called a  "receptor,"  on the surface of another  cell.  The
activation  of the  receptor on the  surface of the  receiving  cell  triggers a
cascade of events in which the  message  received by the  receptor  is, in turn,
transmitted  to the  interior of the cell,  thereby  causing  some aspect of the
behavior of the receiving cell to change. The nature of this change depends upon
a number of factors,  including the specific ligand and receptor involved in the
communication.

         Many different  kinds of receptors  involved in cellular  communication
exist in the human body. Receptors are first classified into categories,  called
"superfamilies,"  based upon  similarities  in their  biochemical and structural
properties.   There  are  four  principal  superfamilies  of  receptors:  the  G
protein-coupled  receptor  superfamily,  the  receptor  protein-tyrosine  kinase
superfamily,  the  ligand-gated  ion channel  superfamily and the  intracellular
receptor  superfamily.  The receptors  included within each superfamily are then
subcategorized  into groups,  called "families," based upon the specific ligands
with  which  they  interact.   Examples  of  receptor   families  within  the  G
protein-coupled receptor superfamily are the serotonin, adrenergic, neuropeptide
Y ("NPY")  and  galanin  families  of  receptors.  Each member of each family is
called a "receptor subtype."

         Historically,  it was believed  that each family of receptors  had only
one or two members.  In recent years,  however,  scientists have discovered that
many families of receptors have more than two receptor  subtypes.  The number of
receptor  subtypes within each family of receptors  varies,  with some families,
such as the serotonin  family,  comprising at least 14 known receptor  subtypes,
and other families, such as the alpha adrenergic family, comprising at least six
known receptor subtypes.

         In general, each receptor subtype is distributed differently throughout
the body and often  controls  physiological  functions  that are different  from
those  controlled  by  other  receptor  subtypes  within  the  same  family.  By
interacting  with all of its receptor  subtypes that are located  throughout the
body, a single ligand thus plays a role in numerous physiological functions. For
example, the ligand for adrenergic receptor subtypes,  noradrenaline (also known
as  norepinephrine),  interacts with at least nine different  receptor  subtypes
(six alpha and three  beta  receptor  subtypes),  one of which has been shown to
contract  the muscles  surrounding  the  prostate  and another of which has been
shown to regulate blood pressure.  In some cases,  the same receptor  subtype is
found in  different  tissues  of the human  body.  A compound  designed  to bind
selectively  to a receptor  subtype for treating a disorder in one tissue could,
therefore,  potentially  cause an  adverse  side  effect in other  tissues  that
contain the same  receptor  subtype.  The tissue  affected by the disorder  may,
however,  have  certain  other  characteristics  that can be  exploited to guide
receptor subtype-targeted compounds to that tissue.


         Receptor-Based Drug Therapy--The Traditional Approach

         Many  illnesses  arise  because  of   abnormalities   in  intercellular
communication,  and the concept of receptor-based  drug therapy was developed to
address  this  problem.  The goal of  receptor-based  drug therapy is to develop
drugs that will  interact with the receptor  believed to be associated  with the
targeted abnormality, thereby inhibiting or enhancing the cascade of events that
is  mediated  by the  receptor.  A number of  receptor-  based  drugs  have been
developed and are currently being used. In general,  however, these drugs do not
differentiate  among receptor  subtypes and, while they may indeed interact with
the targeted receptor subtypes,

                                        4

<PAGE>



thereby  having  some  therapeutic  effect,  they may also  interact  with other
receptor  subtypes  within the same family as the  targeted  receptor  subtypes.
These  other  receptor  subtypes  may be  associated  with  other  physiological
functions, and interactions of these drugs with them often result in undesirable
side effects. In addition,  many of these drugs have limited therapeutic utility
because they must be used in  suboptimal  doses in order to minimize  these side
effects.

         The reason that most of these  currently  available drugs are unable to
differentiate  among  receptor  subtypes  stems  from the fact  that  they  were
discovered through traditional drug discovery methods.  The traditional approach
to drug  discovery  involves the screening of compounds  against  animal tissues
containing  multiple  receptor  subtypes to determine their relevant  biological
activity.  This approach is limited in its ability to yield optimally  effective
drugs because of inherent limitations in the use of animal tissues to test drugs
intended for humans. First, by using animal tissues containing multiple receptor
subtypes,  it is usually  difficult  and often  impossible  both to measure with
precision the effect of a compound on the receptor subtype that is the target of
a drug  discovery  effort and to  determine  whether the  compound is binding to
other  receptor  subtypes in the tissue that are not the  intended  drug target.
Second, due to differences in the receptor systems of various species of animals
as compared to humans, there are often significant  differences between a drug's
activity in animals and the same drug's activity in humans.  In fact,  there are
several examples of drug development candidate failures in human clinical trials
that were due to differences  in the properties of such  candidates in humans as
compared to their  properties in the animal tissues that were initially used for
drug  discovery.  As a consequence,  compounds  initially  tested against animal
tissues  often  do not  have  the  desired  effects  when  they  are  ultimately
administered to humans in clinical trials.


Synaptic's Human Receptor-Targeted Drug Design Technology

         Synaptic  believes  that  its  human   receptor-targeted   drug  design
technology  can overcome the  limitations  of the  traditional  approach to drug
discovery.  This technology  involves three steps: (i) the discovery and cloning
of the human genes that code for the targeted receptor subtypes; (ii) the use of
each of these genes to create a cell line that can be used to measure, or assay,
the  pharmaceutical  properties of compounds that bind to the targeted  receptor
subtype and that are, therefore,  candidates for drug development; and (iii) the
design,  synthesis and  optimization of compounds that are highly  selective for
the targeted human receptor subtype.  In the first step, the Company's molecular
biologists  employ genetic  engineering  techniques to clone the gene that codes
for the receptor  subtype of interest.  In the second step,  the Company's  cell
biologists  place the gene into a recipient  cell which then expresses the human
receptor  subtype on its surface.  This recipient cell, which expresses a single
population  of the targeted  human  receptor  subtype and is devoid of all other
related receptor subtypes,  is then propagated by the Company's cell biologists,
resulting in the establishment of a cell line.  Finally,  this cell line is used
as a  drug  discovery  system  by  the  Company's  pharmacologists  to  evaluate
compounds synthesized by the Company's or its collaborative  partners' chemists.
Since  each of these cell  lines  expresses  a single  receptor  subtype,  it is
possible to design  compounds  with high  affinity for the ultimate  target of a
drug discovery program--the appropriate human receptor subtype--and low affinity
for those subtypes suspected of being associated with side effects.

         The Company's  technology  makes it possible not only to clone receptor
subtypes  previously  believed or known to exist, but also to discover and clone
receptor  subtypes  which had  previously  been  undetectable  in animal tissues
because they were present in concentrations  too low to detect using traditional
pharmacological techniques. Many of these newly discovered receptor subtypes may
provide  opportunities  for the design of novel drugs. In addition,  the Company
believes that its ability to access and to use individual  cloned human receptor
subtypes in its drug design  efforts will yield safer and more  effective  drugs
than those currently available.

                                        5

<PAGE>



Synaptic  further  believes that its  technology  may make the drug  development
process more predictive and cost-effective than the traditional approach because
the   Company   and   its   collaborative   partners   eliminate   or   redesign
non-subtype-selective  compounds  and  compounds  that react  poorly  with human
targets at an early stage of the process  rather than at the costly later stages
of preclinical testing and clinical trials. Finally, drugs developed through the
use of the Company's  human  receptor-targeted  drug design  technology  will be
small molecule drugs which offer possibilities of avoiding  specialized delivery
approaches and which may be delivered orally.

         The Company also believes that its success in the discovery of receptor
subtypes  will enable it to further  refine the  understanding  of many  disease
processes.  There is  increasing  evidence to suggest  that some  disorders  may
actually involve the malfunctioning of any one of a variety of receptor subtypes
included  within  different  receptor  families.  For  example,  in the  case of
obesity,  there are pharmacological data indicating that an NPY receptor subtype
is involved in controlling  appetite,  while a galanin  receptor  subtype may be
involved in craving for fats in the diet. As a result,  more than one drug could
be  developed  to treat  obesity,  but such drugs would work  through  different
biological  mechanisms by exerting their therapeutic effects by interacting with
receptor subtypes belonging to different families. The Company believes that its
human  receptor-targeted drug design technology may make it possible to discover
two or more separate drugs that could benefit distinct patient populations whose
symptoms  (for  example,   obesity),   while  identical,   stem  from  different
physiological    disorders   and   therefore   require   different   treatments.
Consequently,  it has initiated  several  programs in which  different  receptor
subtypes are being used as drug targets for the same therapeutic application.

         To date,  the Company has not  completed  development  of any drugs and
does not expect that drugs developed by it or its collaborative partners will be
commercially available for a number of years.


         Receptor Gene Discovery and Cloning

         The Company's  principal receptor cloning projects to date have focused
on four  families  of  receptors  within the G  protein-coupled  superfamily  of
receptors: the serotonin,  alpha adrenergic,  NPY and galanin receptor families.
Additional projects directed toward other receptor families are ongoing.

         The Company's collection of cloned genes that code for receptors in the
G protein-coupled  receptor superfamily  comprises human genes, as well as genes
from various other mammalian  species that correspond to the human genes.  These
receptor genes include genes that were  discovered by the Company and genes that
were  discovered by others about which  information  is publicly  available.  In
general,  the Company seeks to patent those cloned receptor genes and those drug
discovery  systems that it has discovered or invented.  As of March 2, 1998, the
Company had received United States patents relating to eleven receptor genes and
related drug  discovery  systems and several  United States patent  applications
relating to the Company's  receptor gene discoveries were pending.  In addition,
several  corresponding patents had been issued in other countries and additional
corresponding  patent applications had been filed in other countries.  There can
be no assurance  that the Company  will be awarded  patents in respect of any of
its pending patent applications.


         Drug Discovery Systems

         Once the Company clones the gene for a targeted  receptor  subtype,  it
places the gene into a recipient cell which then expresses the targeted receptor
subtype on its surface.  This cell,  which expresses a single  population of the
targeted human  receptor  subtype,  is then  propagated in the laboratory by the
Company's cell biologists,  resulting in the  establishment of a cell line. This
cell line, which constitutes a drug discovery system, is used in

                                        6

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two  different  types of  assays:  binding  assays  and  functional  assays.  In
Synaptic's binding assays, the Company's pharmacologists measure the affinity of
a compound for both the receptor subtype that is the target of a particular drug
discovery  program and the other receptor subtypes that could be associated with
side effects.  These measurements help to predict the potency of a compound,  as
well as the  degree  of  selectivity  that  the  compound  has for the  targeted
receptor  subtype over other receptor  subtypes.  The data obtained from binding
assays enable the chemists to design  compounds  toward or away from one or more
of the relevant subtypes,  as appropriate,  for optimal therapeutic efficacy. In
Synaptic's functional assays, the Company's pharmacologists determine the nature
of  the  response  of the  receptor  subtype  to the  compound.  Data  from  the
functional  assays show whether the compound is acting to inhibit or enhance the
activity of the receptor subtype.  By enabling the Company's  pharmacologists to
evaluate compounds rapidly at their ultimate human receptor subtype targets, the
Company's  proprietary drug discovery  systems serve as tools that the Company's
and its partners' or licensees' chemists can use to rationally design drugs that
will be more effective and have fewer or substantially  less severe side effects
than  existing  drugs.  Although the Company  believes  that its drug  discovery
systems accurately  measure the properties of a compound's  interaction with the
human receptor subtypes,  there are many additional factors,  such as the drug's
stability in the body or its ability to be administered  orally, that impact the
ultimate pharmaceutical success of a compound.


         Chemistry and Molecular Pharmacology

         The Company  employs  two  approaches  to  designing  and  synthesizing
receptor  subtype-selective  compounds,  traditional medicinal chemistry and the
newer technology of combinatorial chemistry,  both of which are supported by the
Company's  expertise  in   computer-assisted   molecular  modeling.   With  both
approaches,  the Company's chemists and  pharmacologists  use their knowledge of
the structures of the targeted  receptor  subtypes and known compounds to design
and synthesize structures that will have activity at these subtypes.

         Combinatorial  chemistry involves  automated  synthesis of a variety of
novel  compounds by assembling  them using  different  combinations  of chemical
building blocks.  The use of  combinatorial  chemistry  greatly  accelerates the
process of generating  compounds.  The resulting  arrays of compounds are called
libraries  and  are  used  to  screen  for  compounds  ("lead  compounds")  that
demonstrate a sufficient level of activity at receptors of interest. The Company
is using combinatorial  chemistry to synthesize "focused" libraries of compounds
anticipated to be highly biased toward the Company's drug discovery targets. The
Company's scientists have successfully  generated lead compounds through the use
of these combinatorial chemistry techniques.

         Once  lead  compounds  are  identified,  whether  through  the  use  of
combinatorial  chemistry  or  traditional  medicinal  chemistry,  a  variety  of
analogues  are  prepared to  facilitate  an  understanding  of the  relationship
between chemical  structure and biological  activity.  These studies help define
structure  activity  relationships  which  can  then  be  used  to  design  drug
candidates with improved potency,  selectivity and  pharmacokinetic  properties.
Combinatorial  chemistry is used to rapidly generate a variety of structures for
lead optimization. Traditional medicinal chemistry, which involves the synthesis
of compounds one at a time, is also used for further  refinement and to generate
compounds not accessible by automated techniques.


Receptor and Drug Discovery Programs: Focus on G Protein-Coupled
 Receptor Superfamily

         The  superfamily  of receptors to which the Company has chosen to apply
its human  receptor-targeted  drug design  technology  is the G  protein-coupled
receptor superfamily, so called because the cascade of events that

                                        7

<PAGE>



ensues within the receiving cell following the occurrence of the ligand-receptor
interaction is mediated by a class of proteins  called  "GTP-binding  regulatory
proteins," or "G proteins," found within the cell.

         The  Company  chose  to  focus  on  the  G   protein-coupled   receptor
superfamily  because it  believes  that this  superfamily  provides  the optimum
opportunity  for the  exploitation  of its human  receptor-targeted  drug design
technology.  First,  it is known that G  protein-coupled  receptors play a major
role in intercellular communication and that drugs that block ("antagonists") or
enhance ("agonists") their activity have therapeutic  utility.  Examples of such
drugs include:  Zantac(R),  a histamine receptor antagonist for the treatment of
ulcers;  Claritin(R),  a histamine  receptor  antagonist  for the  treatment  of
allergy; Propulsid(R), a serotonin receptor agonist for the treatment of gastric
motility disorder; Imitrex(R), a serotonin receptor agonist for the treatment of
migraine  headache;  and Hytrin(R),  an adrenergic  receptor  antagonist for the
treatment of hypertension  and BPH.  Second,  there is a large body of knowledge
about some of the basic  structural  elements of drugs that  interact with these
receptors  that has  accumulated  over the years from which the  Company and its
collaborative  partners can draw in  beginning  their drug  discovery  programs.
Third, the G protein-coupled  receptor superfamily is extremely large and, based
on several estimates,  exceeds 1,000 receptor subtypes belonging to more than 40
known families and an unknown number of additional families the ligands of which
have not yet been identified. To the Company's knowledge, fewer than half of the
genes that code for these subtypes have been cloned.

         The  Company's  primary  drug  discovery  programs are focused on human
serotonin, adrenergic, NPY and galanin receptor subtypes. The serotonin programs
are being conducted by the Company in collaboration with Lilly. One of the alpha
adrenergic  programs is being  conducted  by the Company in  collaboration  with
Merck and the other alpha  adrenergic  program is being conducted by the Company
in collaboration  with Grunenthal.  Of the Company's three NPY programs,  one is
being conducted by the Company in collaboration  with Novartis and two are being
conducted by the Company  independently.  The galanin program is being conducted
by the Company in collaboration with Warner-Lambert.

         Total operating expenses incurred by the Company for each of the fiscal
years  1997,  1996 and  1995  were  $17,853,000,  $14,319,000  and  $12,078,000,
respectively,  of which  approximately  $9,785,000,  $6,943,000 and  $7,670,000,
respectively,  was  funded by the  Company's  collaborative  partners.  In 1996,
following the  completion of its initial  public  offering in December 1995, the
Company  increased its internal research and development  spending.  The Company
again increased  internal research and development  spending during 1997 and the
Company intends to further increase such spending during 1998.



                                        8

<PAGE>



         Certain of the  Company's  receptor  and drug  discovery  programs  are
summarized in the following table:

                              Summary of Synaptic's
                      Receptor and Drug Discovery Programs


Program(1)       Receptor(s)  Primary Indication(s)        Status(2)    Partner
- --------------   ------------ ---------------------- ----------------- ---------
Serotonin        1F           Acute Migraine         Phase II Clinical Eli Lilly
                 2B           Migraine Prophylaxis   Late Preclinical  Eli Lilly
                 __(3)        Depression             Late Preclinical  Eli Lilly
                 1A           Smoking Cessation      Early Preclinical Eli Lilly
                 2C           Obesity                Early Preclinical Eli Lilly

Alpha
 Adrenergic      1a           Benign Prostatic
                                 Hyperplasia         Late Preclinical      Merck
                 2a, 2b or
                 2c (3)       Pain                   Leads Identified Grunenthal


Neuropeptide Y   Y5           Obesity                Early Preclinical  Novartis
                 Y2           Pain                   Discovery               (4)
                 Y2           Anxiety and 
                                 Depression          Leads Identified         --


Galanin          1, 2, and 3  Obesity, Diabetes,     Cloning and         Warner-
                                 Alzheimer's Disease,    Discovery       Lambert
                                 Depression and Pain

(1)      The  Company is working on  receptor  and drug  discovery  programs  in
         addition to those programs  referenced in the above table.  In general,
         the  drug   discovery   and  receptor   discovery   programs  that  are
         specifically  referenced in the above table are at more advanced stages
         of development than those that are not  specifically  referenced in the
         table.

(2)      "Cloning" refers to the stage  at  which  the  Company is attempting to
         discover, identify and clone the genes for specific receptor subtypes.

         "Discovery"  refers to the stage at which  chemists are  attempting  to
         identify  receptor  subtype-selective  compounds through the use of the
         Company's drug discovery systems.

         "Leads   Identified"   refers   to  the   stage   at   which   receptor
         subtype-selective compounds have been identified through the use of the
         Company's drug discovery systems.

         "Early Preclinical" refers to the stage at which one or more leads have
         been  identified  and are  being  tested  in in vitro or in vivo  model
         systems for one or more  indications.  In addition,  at this stage lead
         compounds  may have been shown to be active in animal models for one or
         more  indications  and  preliminary   toxicology  and  pharmacokinetics
         studies will also have been concluded.

         "Late  Preclinical"  refers to the stage preceding the Phase I Clinical
         stage at which a clinical candidate has been selected, scale-up of such
         candidate is underway or completed, and toxicology and pharmacokinetics
         studies are planned or underway or have been concluded.

         "Phase I Clinical"  refers to the stage preceding the Phase II Clinical
         stage at which a drug candidate is being or has been  administered to a
         small group of healthy  human  subjects  for the purpose of testing for
         safety (adverse effects), dose tolerance, absorption, bio-distribution,
         metabolism, excretion and clinical pharmacology.

         "Phase II  Clinical"  refers to the stage at which a drug  candidate is
         being or has been administered to a small sample of the actual intended
         patient population to seek to assess the efficacy of the drug candidate
         for the specific targeted  indication,  to determine dose tolerance and
         the optimal dose range and to gather additional information relating to
         safety and potential adverse effects.


                                        9

<PAGE>



         "Phase III Clinical"  refers to the stage at which a drug  candidate is
         being or has been  administered  to a  broader  sample  of the  general
         patient population at geographically dispersed study sites to establish
         further clinical safety and efficacy of the drug candidates in order to
         determine  its  overall  risk-benefit  ratio and to provide an adequate
         basis for all physician labeling.

(3)      The specific receptor subtype  that  is  the  focus  of this program is
         confidential to the Company and its collaborative partner.

(4)      While  Synaptic is currently  conducting  this  program  independently,
         Synaptic  has agreed to reserve the Y2  receptor as a potential  target
         for drugs for the alleviation of pain exclusively for its collaboration
         with Grunenthal.


                                       10

<PAGE>



Serotonin Programs

         Serotonin is one of the major  neurotransmitters,  a type of ligand, of
the  body.  It  affects  mood,  sleep  rhythms,   sexual  functions,   appetite,
temperature   control,   gastro-intestinal   movement  and  the  cardiovascular,
pulmonary and genito-urinary  systems. Drugs that inhibit or enhance the actions
of  serotonin  have  proven  to be  effective  in the  treatment  of an array of
disorders,  such as migraine headache,  depression and anxiety. However, none of
the limited number of serotonergic  drugs currently  available was designed with
the use of cloned serotonin  receptor subtype genes and some of these drugs have
undesirable  side effect profiles.  It is generally  believed that the poor side
effect profiles stem from the interaction of these drugs with multiple serotonin
receptor subtypes. The serotonin family is extremely large,  comprising at least
14 receptor subtypes. While each of these receptor subtypes may be implicated in
a physiological  function distinct from the other subtypes,  all of the receptor
subtypes  respond to the  neurotransmitter  serotonin--and  may be responding to
non-subtype-selective  drugs.  As a consequence,  a  non-subtype-selective  drug
intended to exert its effects on one physiological function may in fact have the
unintended consequence of exerting its effects on other physiological functions,
thereby causing the undesirable side effects.

         Of the 14 serotonin  receptor  subtype genes that have been  discovered
and cloned,  the Company  believes that it is responsible  for the discovery and
cloning of seven. The Company has been issued United States patents covering six
of these receptor genes and related drug discovery systems. A patent application
covering  the seventh of these genes and the related drug  discovery  system and
additional patent applications relating to all of these genes have been filed in
the United States. In addition,  several  corresponding patent applications have
been filed in other countries.  The Company has found,  through the use of these
cloned  receptor  genes and related drug discovery  systems,  that the serotonin
system is  significantly  more complex than had previously  been  understood and
believes  that  the  use  of  its  technology  to  design   serotonin   receptor
subtype-selective  drugs will  result in new  serotonergic  drugs with  improved
efficacy  and  side  effect  profiles,  as well as  serotonergic  drugs  for new
therapeutic applications.  There can be no assurance,  however, that the Company
will be successful in designing a serotonin receptor subtype-selective drug that
will achieve the foregoing desired effect.

         The Company, in collaboration with Lilly, is currently  conducting drug
discovery  programs  focused  on a number of  serotonin  receptor  subtypes  and
therapeutic  applications.  As part of the collaboration,  compounds supplied by
Lilly  are  assayed  by the  Company  in its  serotonin  receptor  subtype  drug
discovery  systems.  To date,  receptor  subtype-selective  compounds  have been
identified  for a number of  serotonin  programs.  The  program  focused  on the
discovery and  development  of a drug for the treatment of migraine  headache is
currently in Phase II clinical  trials in Europe and as of March 2, 1998,  Lilly
confirmed  that it expects to complete  such trials and to begin  analyzing  the
data from the trials during the second  quarter of 1998. In connection  with the
collaboration,  Lilly received an exclusive worldwide license to use all but two
of the Company's  existing  serotonin drug discovery systems for the development
and  commercialization  of serotonergic drugs. Certain of the serotonin programs
are described below.


         Migraine Headache

         Migraine headaches are periodic  throbbing  headaches often accompanied
by nausea and  vomiting.  One of the newer drugs  available for the treatment of
migraine,  Imitrex(R), is an agonist of certain serotonin receptor subtypes that
was  discovered  using the  traditional  approach  to drug  discovery.  Although
effective in most patients,  the drug has been associated with the tightening of
the coronary blood vessels.  As a result,  the drug is  contraindicated  both in
patients with  ischemic  heart disease and in patients with symptoms of ischemic
heart  disease.  In  addition,  because  of  the  cardiovascular  risks,  it  is
recommended that, in the case of any patient in

                                       11

<PAGE>



whom unrecognized  coronary disease is comparatively  likely,  the first dose of
the drug be administered in a physician's  office.  Finally,  the drug is poorly
absorbed from the gastrointestinal  tract.  Therefore,  to be most effective, it
must be given by injection or by nasal spray.

         The Company and Lilly are focused on developing anti-migraine compounds
with  increased  efficacy  and  reduced  side  effects.  Through  the use of its
serotonin   receptor  subtype  drug  discovery  systems,   Synaptic   scientists
discovered  that  Imitrex(R)  reacted  strongly  with three  serotonin  receptor
subtypes, serotonin 1B and 1D, both of which were long thought to be the targets
for anti-migraine effects, as well as serotonin 1F. Synaptic scientists proposed
that the appropriate serotonin receptor subtype for the treatment of migraine is
the serotonin 1F receptor subtype.  Together with scientists at Lilly,  Synaptic
scientists  identified compounds that are selective agonists of the serotonin 1F
receptor  subtype.  These  compounds  were tested in animal  models at Lilly and
shown to be orally active and to have a long  duration of action.  The compounds
were  also  shown to be  potent  in an  animal  model  that is  thought  by many
scientists  in the  field  to be  predictive  of  therapeutic  utility  for  the
treatment  of  migraine.   Furthermore,   these   compounds   were  inactive  in
vasoconstriction  assays at Lilly,  thereby suggesting that the possible adverse
events  reported for  Imitrex(R)  would not limit the  treatment  potential of a
1F-selective  agonist  for  migraine.  Lilly is  currently  conducting  Phase II
clinical trials with one of these compounds in Europe.  Synaptic has been issued
a  United  States  patent  covering  the  use of  genetically  engineered  cells
expressing the human  serotonin 1F receptor  subtype to identify  compounds that
bind to the receptor  subtype,  as well as a United States  patent  covering the
gene encoding the receptor subtype. In addition,  Lilly has been issued a United
States   patent   covering   the   use  of  1F   agonists   exhibiting   minimal
vasoconstrictive effects for the treatment of migraine.

         The Company and Lilly are also  focused on the  discovery  of safer and
more  efficacious  drugs for the  prophylactic  treatment of  migraine.  Despite
significant  progress in the development of therapies for the acute treatment of
migraine,  much less progress has been made in the development of a prophylactic
treatment. Patients who regularly experience two to six migraines per month are,
according  to  criteria  established  by  the  International  Headache  Society,
considered to be candidates for such a treatment. Presently, two beta adrenergic
blockers, Inderal(R) and Blocadren(R),  ergot alkaloids, such as Sansert(R), and
an  anticonvulsant,  Depakote(R),  have been  approved  for the  prophylaxis  of
migraine. These drugs generally have limited efficacy due to their potential for
significant  deleterious side effects.  Inderal(R) and Blocadren(R) must be used
with  caution in patients  with  certain  pulmonary  diseases  because  they can
produce  bronchoconstriction  and in  patients  with  congestive  heart  failure
because  they  can  cause  coronary   depression.   Ergot  alkaloids  can  cause
vasoconstriction  leading to myocardial  ischemia or gangrene in the extremities
and should not be used by pregnant  women.  Depakote(R)  can cause fatal hepatic
failure and, like ergot alkaloids, should be avoided by pregnant women.

         Through the use of Synaptic's serotonin receptor subtype drug discovery
systems,  scientists at Synaptic and Lilly have  discovered  compounds  that are
selective antagonists of the serotonin 2B receptor subtype,  which is thought to
be a potential target for migraine prophylaxis. These compounds are active in an
animal model that is thought by many scientists in the field to be predictive of
therapeutic  utility for the  treatment of migraine and it is believed that such
compounds may provide safer and more  effective  prophylactic  therapy for those
who suffer frequent migraine.  One of these compounds has been selected by Lilly
for possible development and is undergoing late preclinical testing.


         Smoking Cessation

         There are more than 150 million smokers in major market countries, more
than 30  million  of whom  attempt  each year to quit  smoking.  Chronic  use of
tobacco is causally linked to a variety of serious diseases,  including coronary
heart disease, cancer and emphysema. Nicotine patches and nicotine gum have been
used as

                                       12

<PAGE>



smoking   cessation  aids,  but  have  met  with  limited   success.   Recently,
Wellbutrin(R),   which  has  been   available  for  a  number  of  years  as  an
antidepressant,  was approved by the United States Food and Drug  Administration
(the "FDA") for marketing in a sustained release formulation  (Zyban(R)) for use
as an aid to smoking  cessation.  Clinical  studies show that  Zyban(R),  either
alone or in combination with transdermal nicotine, increases the rate of smoking
cessation. However, the long-term response rate to Zyban(R) as an aid in smoking
cessation is low (about 20%). In addition, the active ingredient in Zyban(R) has
been reported to cause seizures in about 0.4% of patients,  along with agitation
and insomnia.

         The Company and Lilly are engaged in a program to identify  and develop
serotonin 1A antagonists  which  ameliorate the withdrawal  symptoms  frequently
suffered in  connection  with smoking  cessation.  As part of the  program,  the
Company and Lilly have designed novel compounds  which are highly  selective for
and are potent antagonists of the serotonin 1A receptor subtype. These compounds
have been shown to be effective in an animal  model of nicotine  withdrawal  and
may lead to drugs which are more effective as smoking  cessation aids than those
currently available.


         Obesity

         Drug treatment for obesity has traditionally  been used as a short-term
adjunct to diet and exercise.  Most drugs  approved for the treatment of obesity
act centrally through  catecholaminergic  and/or serotonergic pathways.  Earlier
compounds,  such as Benzedrine(R) and Dexedrine(R),  were plagued by problems of
tolerance, abuse and cardiovascular side effects. More recently, Pondimin(R) and
Redux(R),  which act by releasing the  neurotransmitter  serotonin,  were widely
used, either alone or in combination with phentermine (Phen-Fen).  However, both
of these drugs have been withdrawn from the market  pursuant to a request by the
FDA because they appear to cause heart valve defects and pulmonary hypertension.
The mechanism by which Pondimin(R) and Redux(R) cause this cardiac and pulmonary
toxicity is unknown,  but similar  toxicity is not seen with other  serotonergic
drugs,   such  as   Prozac(R)   and   Zoloft(R),   which  are  widely   used  as
antidepressants.

         While it has been proven that  serotonergic  transmission  can regulate
food intake,  it has not been clear which of the serotonin  receptor subtypes is
responsible for this action.  Studies involving  genetically  altered mice which
lack serotonin 2C receptors  indicate that this serotonin  receptor  subtype may
play a role.  These mice are normal at birth but become obese as they get older,
and their obesity is associated with increases in food intake levels and insulin
resistance. A possible correlation in humans is provided by the observation that
patients treated with drugs such as clozapine,  imipramine,  and  amitriptyline,
all of which have, in addition to their principal actions,  substantial blockade
of the serotonin 2C receptors, are associated with weight gain.

         The Company and scientists at Lilly are  collaborating  to identify and
develop  compounds  which are selective for the serotonin 2C receptor over other
serotonin  receptor  subtypes  that  may be  responsible  for  undesirable  side
effects.  The Company's  serotonin  receptor subtype drug discovery systems have
made it possible to discover  subtype-selective  compounds that may be effective
treatments for obesity  through this  serotonin 2C mechanism.  Subtype-selective
compounds  which suppress food intake in animal models have been  identified and
are under evaluation for their suitability as drug candidates.


         Depression

         A number of different  pharmacologic  strategies have been developed to
treat  depression.  The early drugs shown to be  effective  in the  treatment of
depression, such as the tricyclic antidepressants, lithium and the

                                       13

<PAGE>



monoamine oxidase  inhibitors,  have side effects associated with their use that
limit their  effectiveness.  Recently,  selective  serotonin reuptake inhibitors
(SSRI), such as Prozac(R),  Zoloft(R) and Paxil(R), have been shown to be highly
effective  in the  treatment  of many  forms of  depression.  A  number  of SSRI
compounds  are now  approved  for  marketing,  and these  drugs have  captured a
significant market share.  However,  all of these currently available drugs have
significant deleterious side effects in many patients which may limit their use.
In  addition,  these  drugs have a lag time  before  their  beneficial  clinical
effects can be seen. This lag time can be a serious  problem,  especially in the
depressed  suicidal  patient.  Furthermore,  there are a  significant  number of
patients that do not adequately  respond to any of the currently  available drug
therapies.

         Scientists  at  Synaptic  and Lilly  have  identified  novel  serotonin
receptor  subtype-selective  compounds  that may have rapid onset of efficacy in
the treatment of depression  and that may also have better side effect  profiles
than drugs  currently  available.  One of these  compounds  has been selected by
Lilly for possible development and is undergoing late preclinical testing.


         Other Serotonin Programs

         The Company has cloned additional  serotonin receptor subtypes that are
either not  currently  being  pursued  by it and Lilly as drug  targets in their
collaborative drug discovery programs or are being so pursued but are focused on
therapeutic  applications  which are currently  confidential  to the Company and
Lilly.  In  addition,  there is evidence to suggest  that one or more  serotonin
receptor subtypes that are the targets of the drug discovery  programs currently
being  conducted  by the  Company and Lilly may be relevant as targets for other
therapeutic  applications.  The Company expects that it and Lilly will establish
additional drug discovery  programs  focused on certain of these other serotonin
receptor  subtypes or therapeutic  applications  in the future.  There can be no
assurance,  however,  that the Company will establish  additional drug discovery
programs with Lilly.


Alpha Adrenergic Programs

         Alpha  adrenergic  receptors  are  activated  by  the  neurotransmitter
norepinephrine (noradrenaline).  The alpha adrenergic receptors serve a critical
control  function in regulating  involuntary  physiological  functions,  such as
blood  pressure,  heart  rate and  smooth  muscle  tone,  and thus may  serve as
important tools in the management of many disorders, such as BPH.

         Until 1982, only two alpha adrenergic  receptors  (alpha-1 and alpha-2)
were believed to exist.  Since then,  scientists  have discovered that the alpha
adrenergic receptor family contains at least six subtypes  (alpha-1a,  1b and 1d
and  alpha-2a,  2b and 2c).  The  Company  believes it was  responsible  for the
discovery of the genes that code for four of the six alpha  adrenergic  subtypes
in humans.  The Company has received  United States  patents  relating to two of
these genes and related drug discovery systems.  Additional patent  applications
relating to one of these genes have been filed both in the United  States and in
other countries.

         There are a number of  adrenergic  drugs on the market  today which are
effective in the  treatment of a variety of  disorders.  However,  most of these
drugs were  discovered  in the 1970's  prior to the  discovery  of the six alpha
adrenergic  subtypes  and  are not  selective  for  any  one of  these  receptor
subtypes.  The Company  believes that many of the side effects  associated  with
these drugs may be traced to a lack of selectivity for the appropriate  receptor
subtypes.  The Company is using its alpha  adrenergic drug discovery  systems to
discover compounds with increased  receptor subtype  selectivity and is involved
in two programs  involving  alpha  adrenergic  receptor  subtypes:  the Alpha-1a
Antagonist Program and the Alpha-2 Adrenergic Program. There can be no assurance

                                       14

<PAGE>



that the Company or any collaborative partner will be successful in designing an
alpha adrenergic receptor  subtype-selective  drug with improved efficacy and an
improved side effect profile.

         The  Company and Merck are  collaborating  on the  Alpha-1a  Antagonist
Program to develop  drugs for the  treatment of BPH. The Company and  Grunenthal
are  collaborating  on the Alpha-2  Adrenergic  Program to develop drugs for the
alleviation of pain. These programs are described below.


         Benign Prostatic Hyperplasia

         BPH is a pathology of the prostate,  a  walnut-sized  gland in men that
surrounds the urethra as it exits the bladder. As men age, cells in the prostate
proliferate,  causing  growth in the  prostatic  tissue which in turn results in
pressure on the  urethra.  Common  symptoms of BPH  include  urinary  retention,
hesitancy or difficulty  initiating the stream of urine,  urinary  frequency,  a
sense of urgency and a sensation  of  incomplete  emptying of the  bladder.  The
incomplete  emptying of the bladder caused by BPH can also lead to urinary tract
infections  and bladder  damage.  In severe cases,  the flow of urine can become
completely blocked and lead to kidney failure.

         There are several treatment  options  available for BPH.  Transurethral
resection of the prostate  (TURP) was used in  approximately  180,000 men in the
United States in 1996. This surgical  procedure results in significant  benefit.
However, surgery is an unattractive alternative for many patients because of its
potential adverse consequences,  and is not recommended for elderly patients due
to the potential for complications.  Another surgical  procedure,  transurethral
needle  ablation  (TUNA),  was  recently  approved  by the FDA and may  have the
advantage  of possible  use on an  out-patient  basis  under  local  anesthesia.
However,  initial  results of a recent study comparing TURP to TUNA show a lower
level of efficacy in TUNA than in TURP with respect to increasing urinary flow.

         Two  different  non-surgical  alternatives  for the treatment of BPH in
patients  who either are not  candidates  for or elect not to have  surgery  are
currently  available.  The  first  alternative  is a type of drug  that  acts by
inhibiting the enzyme 5 alpha reductase, which is responsible for the conversion
of testosterone to  dihydrotestosterone  in the prostate.  By reducing levels of
dihydrotestosterone, which plays a role in growth of prostatic tissue, this type
of drug is  intended  to shrink  the  gland.  An example of this type of drug is
Proscar(R).  Although there is a rapid  regression of the enlarged gland in most
patients,  less than 50% of  patients  experience  an increase in urine flow and
improvement of symptoms when treated with Proscar(R) for 12 months. A minimum of
six months'  treatment may be necessary to determine  whether an individual will
respond to the drug.

         The second type of drug for the  treatment  of BPH  involves the use of
alpha-1 adrenergic  antagonists,  such as Hytrin(R) and Cardura(R),  that act by
blocking alpha adrenergic  stimulation of the prostate.  This blocking  activity
causes a  relaxation  of the  musculature  of the  prostate,  thereby  improving
urinary flow and providing  other  symptomatic  relief of BPH.  These drugs were
initially  developed as  antihypertensive  agents in the mid-1970's prior to the
discovery  that there existed three distinct  subtypes of the alpha-1  receptor,
and  are  not  selective  for  any  particular  alpha-1  subtype.   While  rapid
symptomatic  improvement in approximately 70% of patients treated with this type
of drug has been observed,  dose-dependent side effects,  including  hypotension
(which causes dizziness),  headache,  weakness,  nasal congestion and peripheral
edema,  are commonly  associated with the treatment.  The side effects limit the
recommended dose for these drugs. The most significant side effect, hypotension,
is  particularly  detrimental  to  elderly  patients.  Recently,  another  alpha
antagonist,  Flomax(R),  was approved for use in the treatment of BPH. Flomax(R)
is claimed to be  "uroselective,"  but its  labeling  carries  warnings  of side
effects, such as postural hypotension,  dizziness and vertigo,  similar to those
of Hytrin(R).


                                       15

<PAGE>



         Through the use of its alpha  adrenergic drug discovery  systems and by
means of in vivo studies,  Synaptic  discovered that different receptor subtypes
are  involved in the control of prostate  musculature  and blood  pressure:  the
alpha-1a receptor subtype is responsible for contraction of prostate musculature
and other alpha-1  subtypes are involved in the  regulation  of blood  pressure.
This discovery confirmed the Company's  hypothesis that many of the side effects
caused by alpha-1 adrenergic  antagonists  currently available for the treatment
of BPH stemmed from their lack of selectivity for the receptor  subtype involved
in relaxation of prostate musculature. The Company has been issued United States
patents covering the use of selective alpha-1a  antagonists for the treatment of
BPH (the "BPH use  patents").  In  addition,  Synaptic  has been issued a United
States patent covering the use of genetically  engineered  cells  expressing the
human alpha-1a  adrenergic  receptor subtype to identify  compounds that bind to
the  receptor  subtype,  as well as a United  States  patent  covering  the gene
encoding the receptor subtype.

         The Company,  in collaboration  with Merck, is using the Company's drug
discovery  systems to design  compounds  that block the activity of the alpha-1a
receptor  subtype,  thereby  producing the desired effects on the prostate,  but
that have minimal affinity for alpha-1b and alpha-1d receptor subtypes,  thereby
substantially  reducing the cardiovascular effects seen with currently available
non-selective alpha-1 adrenergic antagonists. A compound selected by Merck is in
the late preclinical stage of testing. Other leads have also been identified and
are in the early or late preclinical stage of testing.

         As part of the  collaboration,  Synaptic  granted  Merck a nonexclusive
worldwide  license under certain of its patent  rights,  including the Company's
alpha  adrenergic  receptor  patents  and patent  applications,  to develop  and
commercialize   alpha-1a  antagonists. Synaptic  also granted  Merck  as part of
the collaboration an  exclusive worldwide license  to  use  Synaptic's  alpha-1a
selective  compounds and know-how, as well  as  an  exclusive  worldwide license
under certain of the Company's patent rights,  including  the BPH  use   patents
and related  patent  applications, for the same purposes. However,in March 1998,
Merck granted back to Synaptic  such rights as were necessary to enable Synaptic
to grant to Glaxo pursuant  to the Glaxo  Agreement a limited  license under the
BPH use  patents  and an option to obtain an  additional  license  under the BPH
use patents.

         Pain

         Analgesic agents are used to relieve pain (analgesia).  Analgesics most
commonly used for severe pain are narcotics.  Although very effective,  narcotic
analgesic agents carry the risk of depressing respiration and causing nausea and
vomiting,  and their  repeated use may lead to  addiction.  It is believed  that
non-narcotic   analgesics  would  be  beneficial  to  many  patient  populations
suffering from severe pain.

         Alpha-2  agonists  have been broadly  used and are highly  effective as
veterinary  analgesics.  Animal  data  indicate  that these  agents do not cause
respiratory  depression.   In  addition,  their  action  can  be  reversed  with
appropriate  drugs.  However,  they cause both  sedation  and  hypotension  when
administered  within the analgesic dose range.  Alpha-2 agents have not yet been
developed  as  analgesics  for  human  use,  in part due to  concerns  regarding
potential deleterious side effects,  such as sedation and hypotension.  Synaptic
believes that its drug discovery systems for the three human alpha-2  adrenergic
receptor  subtypes  can be  used  to  discover  alpha-2  analgesics  which  have
significantly fewer deleterious side effects than currently available analgesics
and the effects of which may be rapidly  reversed.  The  Company has  identified
alpha-2  agonists  with  analgesic  activity  in  laboratory  animal  models and
recently  entered  into a  collaboration  with  Grunenthal  in which  this  drug
discovery program is being pursued.



                                       16

<PAGE>



Neuropeptide Y Programs

         Neuropeptides are neurotransmitters.  Unlike neurotransmitters that are
small molecules,  such as norepinephrine  and serotonin,  neuropeptides are much
larger molecules. The mode of action of neuropeptides,  however,  resembles that
of  small  molecule  neurotransmitters  in that  they  function  by  means of an
interaction with specific families of receptors, including families within the G
protein-coupled   receptor   superfamily.    Although   current   knowledge   of
neuropeptides and their receptors is significantly less extensive than knowledge
of small  molecule  neurotransmitters  and their  receptors,  subtypes have been
shown to exist for several families of neuropeptide receptors.

         One focus of the Company in its receptor and drug discovery  efforts in
this area has been on the NPY family of receptors.  Although the natural  ligand
for this  family,  NPY,  is a large  molecule,  the goal of this drug  discovery
program  is,  as is  the  case  in all of the  Company's  other  drug  discovery
programs,  to design a small molecule drug. Large  peptide-like  molecules would
not be stable in the body and thus  would  have  short  durations  of action and
would not be orally available,  thus requiring  delivery by injection.  To date,
there is  evidence  for the  existence  in humans of at least five NPY  receptor
subtypes, named Y1, Y2, Y3, Y4 and Y5. However, the discovery and cloning of the
genes for only four of these subtypes have been reported.  In 1996 and 1997, the
Company was awarded United States  patents  covering the genes that code for the
Y2, Y4 and Y5 receptor subtypes and related drug discovery systems. Synaptic has
filed additional patent applications relating to these discoveries in the United
States and in other countries.

         The Company is currently conducting one NPY receptor and drug discovery
program in  collaboration  with  Novartis  focused on obesity.  Another NPY drug
discovery  program  currently  being conducted by the Company focused on pain is
contractually  reserved  for  and may  become  a  joint  program  as part of the
Company's collaboration with Grunenthal.  The Company is seeking a collaborative
partner  to work  with the  Company  on its  third  NPY drug  discovery  program
involving  anxiety and  depression.  There can be no assurance that the NPY drug
discovery  program  focused on pain will  become a joint  program as part of the
Grunenthal collaboration,  that the Company will be successful in consummating a
collaborative arrangement with respect to its NPY drug discovery program focused
on anxiety  and  depression  with  another  company  or that the  Company or any
collaborative  partner will be  successful  in designing  safe and effective NPY
receptor subtype-selective drugs.


         Obesity

         Animal  studies  have shown that NPY is the most potent  stimulator  of
food intake  identified  to date.  As little as one  billionth  of a gram of NPY
injected  directly  into  the  hypothalamus,  a key  brain  area  that  controls
appetite, causes well-fed,  satiated rats to overeat. Repeated administration of
NPY causes continual overeating and obesity.

         A Y5 receptor was initially  isolated by the Company's  scientists from
rat hypothalamus.  In laboratory tests, the activity of NPY and related peptides
on the Y5 receptor  mirrored the ability of these peptides to stimulate  feeding
in animals. As part of its collaboration with the Company,  Novartis then showed
that several peptides that activated the Y5 receptor  preferentially  over other
known NPY  receptors  increased  food  intake  in rats.  Additional  studies  by
Synaptic and Novartis showed that small molecules that selectively  block the Y5
receptor  significantly  reduce food intake in rats.  Based upon these  studies,
Synaptic  believes  that  the Y5  receptor  is a  "feeding"  receptor,  and that
compounds  that  are  selective  for  this  receptor  subtype  may  lead  to new
approaches  to the  treatment  of obesity.  The Company  and  Novartis  are thus
focused on  discovering  and developing a potent and selective Y5 antagonist for
the treatment of obesity. As part of its collaboration with the

                                       17

<PAGE>



Company,  Novartis has an exclusive  license to use the  Company's  NPY receptor
subtype drug discovery systems for the development and  commercialization  of Y5
antagonists,  as well as any  other  NPY  drugs,  for the  treatment  of  eating
disorders.


         Pain

         As  part  of  its  efforts  to  discover  non-narcotic  drugs  for  the
alleviation of pain,  the Company is conducting a program  focused on the design
and  development of analgesics  that stimulate the Y2 receptor  subtype.  Direct
injection  of NPY into the spinal  cord  produces a high level of  analgesia  in
laboratory  animals.  This effect is believed to be related to NPY's  ability to
stimulate  Y2  receptors.  These  receptors  control  the  release  of  chemical
messengers,  such  as  Substance  P,  which  mediate  the  transmission  of pain
responses.  Synaptic  believes that orally active small molecule  agonists which
would mimic the effects of NPY at the Y2  receptor  may offer a new  approach to
the  alleviation  of pain that  would not result in the side  effects  typically
associated  with narcotic  analgesics.  Although the Company and Grunenthal have
not yet  initiated  a joint  program  focused on the design and  development  of
Y2-selective compounds for the alleviation of pain, as part of its collaboration
with  Grunenthal,  Synaptic  has agreed to reserve the Y2 receptor  subtype as a
potential  target for such drugs  exclusively  for the  collaboration  until the
expiration of the collaborative agreement.  There can be no assurance,  however,
that the Company and Grunenthal  will  establish a joint drug discovery  program
focused on the Y2 receptor subtype.


         Anxiety

         Anxiety is a sense of  irrational  fear or dread and is one of the most
frequent  psychiatric  diagnoses  in the  United  States.  There is a variety of
pharmacologic  treatments for anxiety, the most commonly used of which belong to
the class of compounds called benzodiazepines, an example of which is Valium(R).
This class of compounds,  however,  is associated with significant side effects,
including   drowsiness,   impairment  of  motor  skills,  memory  loss  and  the
exacerbation of intoxication by alcohol.  Another serious side effect associated
with the benzodiazepines is their potential to be addictive.

         Behavioral  studies have suggested that NPY can produce anxiety in rats
by  activating  the Y2  receptor  subtype,  raising  the  prospect  that a small
molecule Y2 receptor antagonist may provide a novel treatment for anxiety devoid
of the side effects commonly  associated with currently  available  anxiolytics.
Thus,  the goal of this  drug  discovery  program  is to design  compounds  that
selectively block the Y2 receptor subtype.


Galanin Program

         Galanin  is a  neurotransmitter  which,  like NPY,  is a  neuropeptide.
Galanin  is widely  distributed  in the  gastrointestinal  tract and the  brain.
Pharmacologic  studies suggest the existence of multiple  receptor  subtypes for
this neuropeptide.  There are a number of possible therapeutic  applications for
drugs that  modulate  galanin  receptors,  including  the  treatment of obesity,
diabetes, Alzheimer's Disease, depression and pain. Most of the research done to
date  with  galanin  has  focused  on its role in the  control  of food  intake.
Injection  of galanin  into the brain has been shown to produce an  increase  in
food intake in satiated rats. As a result,  galanin receptor  antagonists  might
result in a reduction of food intake and may thus be useful in the  treatment of
obesity.


                                       18

<PAGE>



         The  Company  has  discovered  and cloned  genes that code for  galanin
receptor  subtypes  and  has  filed  patent   applications   relating  to  these
discoveries.  In July  1997,  the  Company  entered  into a  collaboration  with
Warner-Lambert  to  identify  and  develop  galanin  receptor  subtype-selective
compounds  for  a  variety  of   therapeutic   applications.   The  Company  and
Warner-Lambert  are currently  attempting to identify and  characterize  galanin
receptor subtype-selective compounds. There can be no assurance that the Company
or  Warner-Lambert  will be successful  in  identifying  or developing  any such
compound.


Other Programs

         The Company is pursuing  additional  receptor discovery  programs,  the
identities of which have not yet been disclosed.  These programs involve the use
of the  Company's  molecular  biology  resources to clone  members of selected G
protein-coupled  receptor families in a focused manner. In addition, the Company
is  engaged  in  cloning  other G  protein-coupled  receptors  using a  genomics
approach.  This approach  involves the sequencing of genes from various types of
tissues  selected by the Company based upon their potential  association  with a
therapeutic  application  of  interest  to the  Company.  The  Company  is  also
developing technology, and exploring in-licensing opportunities, for the purpose
of obtaining high throughput functional assays for its receptor discoveries. The
Company is also pursuing  several drug discovery  programs,  the applications of
which have not yet been disclosed.


Collaborative and Licensing Arrangements

         A key  element  of  the  Company's  business  strategy  is to  leverage
resources  and to generate  royalty-based  revenues  through  collaborative  and
licensing arrangements with pharmaceutical  companies.  The Company is currently
collaborating with five pharmaceutical  companies pursuant to: (i) the Research,
Option and License  Agreement  dated as of January 25,  1991,  as amended,  with
Lilly (the  "Lilly  Agreement");  (ii) the  Research  Collaboration  and License
Agreement  dated as of November  30,  1993,  as amended,  with Merck (the "Merck
Agreement");  (iii) the  Research  and License  Agreement  dated as of August 4,
1994, as amended (the "First Novartis Agreement"),  and the Research and License
Agreement  dated  as of May 31,  1996  (the  "Second  Novartis  Agreement,"  and
together with the First Novartis  Agreement,  the "Novartis  Agreements"),  each
with Novartis; (iv) the Collaborative Research and License Agreement dated as of
July 28, 1997, with Warner-Lambert (the "Warner-Lambert Agreement"); and (v) the
Cooperation  Agreement  dated as of  January  12,  1998,  with  Grunenthal  (the
"Grunenthal  Agreement,"  and  together  with the  Lilly  Agreement,  the  Merck
Agreement,  the  Novartis  Agreements,  and the  Warner-Lambert  Agreement,  the
"Collaborative Agreements").  In addition to its collaborative arrangements,  in
March 1998,  the  Company  granted to Glaxo  pursuant  to the Glaxo  Agreement a
license under its patent rights,  and an option to obtain an additional  license
under its patent rights, relating to certain of its technology.

         While the Company evaluates on an ongoing basis potential collaborative
and  licensing  arrangements  with  pharmaceutical  companies,  there  can be no
assurance  that  it will be able to  enter  into  acceptable  collaborative  and
licensing  arrangements  in the  future  or that any such  arrangement,  whether
existing or future, will be successful.

         The following  summarizes  the  Company's  existing  collaborative  and
licensing arrangements.




                                       19

<PAGE>



         Lilly Agreement

         In January 1991, the Company and Lilly entered into the Lilly Agreement
to promote the discovery and development of serotonin receptor subtype-selective
drugs for the treatment of  serotonin-related  disorders.  The collaboration was
extended in January 1995 for an additional four-year period expiring in December
1998. The Company and Lilly agreed to  substantially  increase the size of their
collaboration in October 1996.

         During the initial four-year term of the collaboration,  Lilly provided
the  Company  with an  aggregate  of  approximately  $9.3  million of funding to
support a specified number of the Company's scientists who conducted research as
part of the  collaboration.  The  aggregate  amount of  research  support  to be
provided  by  Lilly  during  the  second  four-year  period  is  expected  to be
approximately $13.2 million. All development, manufacturing, marketing and sales
of drugs resulting from the collaboration will be conducted by Lilly.

         The Company is also  entitled to receive from Lilly  payments  upon the
achievement of certain drug development milestones and royalties on sales of all
drugs developed through the use of the Company's technology. Such royalties will
be payable in respect of sales in any country  over the period  commencing  with
the date of the first  commercial  sale of a drug and ending with the expiration
of related patent rights in that country.

         Lilly paid the Company a one-time  fee of $2.5 million for an exclusive
worldwide  license to use all but two of the Company's  existing  serotonin drug
discovery systems for the development and commercialization of drugs that affect
serotonergic transmission. The Company retains the unlimited right to use two of
its existing  serotonin drug discovery systems and a limited right to use all of
its other serotonin drug discovery  systems in furtherance of its  collaboration
with   Lilly  and  for   cross-reactivity   screening   in  its  and  its  other
collaborators'  non-  serotonin  drug  discovery   programs.   As  part  of  the
collaboration,  Lilly was also granted certain exclusive rights under several of
the Company's patents and patent applications.

         Lilly purchased $2.5 million of equity in Synaptic in June 1991, and in
December 1995,  Lilly purchased an additional $2.5 million of equity in Synaptic
in its initial  public  offering  pursuant  to the terms of the 1995  extension.
Lilly has since sold all of such shares.


         Merck Agreement

         In  November  1993,  the  Company  and  Merck  entered  into the  Merck
Agreement pursuant to which they agreed to collaborate in the identification and
development of alpha-1a  antagonists,  principally for the treatment of BPH. The
initial term of the  collaboration was three years. In October 1996, the term of
the  collaboration  was extended through November 1997 and in November 1997, the
term of the  collaboration  was again  extended for an  additional  year through
November 1998.

         As part of the  collaboration, Synaptic  granted  Merck a  nonexclusive
worldwide  license  under  certain  other patent rights, including the Company's
alpha  adrenergic  receptor  patents  and  patent  applications  to  develop and
commercialize alpha-1a antagonists. Synaptic also granted  Merck  as part of the
collaborationan  exclusive worldwide  license  to  use  the  Company's  alpha-1a
selective  compounds  and know-how, as well as an  exclusive  worldwide  license
under  certain  of the Company's patent  rights,  including  its BPH use patents
and related  patent applications, for the same purposes. However, in March 1998,
Merck  granted back to Synaptic such rights as were necessary to enable Synaptic
to grant to Glaxo  pursuant  to the Glaxo  Agreement a limited license under the
BPH use patents and an option to obtain  an  additional  license under  the  BPH
use  patents.  The Company

                                       20

<PAGE>



retained the right to use its alpha adrenergic technology for the development of
alpha adrenergic and other agents that are not alpha-1a antagonists.

         In consideration  for the licenses  granted to Merck,  Merck originally
agreed to provide the  Company  with up to $20.0  million in  research  funding,
license fees and milestone payments,  as well as to pay the Company royalties on
product  sales.  This amount was  subsequently  increased  by  agreement  of the
Company and Merck to $22.0 million.


         Novartis Agreements

         In  August  1994,  the  Company  and  Novartis  entered  into the First
Novartis  Agreement  pursuant  to  which  they  agreed  to  collaborate  in  the
identification  and  development  of NPY drugs for the  treatment of obesity and
eating disorders, as well as cardiovascular  disorders. In May 1996, the Company
and Novartis entered into the Second Novartis  Agreement and an amendment to the
First Novartis  Agreement  pursuant to which the term of the  collaboration  was
extended by one year and the scope of the  collaboration was expanded to provide
for research on additional  targets for the design of drugs for the treatment of
obesity and eating disorders.

         The term of the collaboration under the two Novartis Agreements expires
in August  1998.  During the term,  Novartis  is required to provide the Company
with funding to support a specified number of the Company's scientists dedicated
to work on the collaboration.  Through December 31, 1997,  Novartis had provided
the  Company  with an  aggregate  of  approximately  $11.2  million in  research
support.  The aggregate amount of research support which the Company is entitled
to receive  from  Novartis  for the period  from  January 1, 1998,  through  the
remainder of the collaboration is $2.0 million.

         In July 1995,  Novartis made a $1.0 million  payment to the Company for
achieving a research  milestone.  Novartis is also  required to make  additional
payments  to the  Company  upon the  achievement  by  Novartis  of certain  drug
development  milestones and, subject to certain limitations,  to pay the Company
royalties  on the  sale of  drugs  developed  through  the use of the  Company's
technology.

         At the  commencement  of the  Company's  collaboration  with  Novartis,
Novartis made a $7.5 million equity investment in the Company. In December 1995,
as part of the Company's  initial public  offering,  Novartis made an additional
$2.0 million  equity  investment  in the Company.  As of December 31, 1997,  the
695,715  shares  of  Common  Stock  acquired  by  Novartis  as a result of these
investments  were held by Novartis  Produkte AG, an affiliate of Novartis.  Such
shares represented 6.6% of the outstanding shares of Common Stock of the Company
at that date.

         As part of the  collaboration,  Synaptic  granted Novartis an exclusive
worldwide  license to use the  Company's  NPY receptor  subtype  drug  discovery
systems   for   the   development   and   commercialization   of  NPY   receptor
subtype-selective  drugs for the treatment of obesity and eating  disorders,  as
well as  cardiovascular  disorders.  Synaptic also granted Novartis an exclusive
worldwide license to use any proprietary  technology of the Company that relates
to the subject matter of the Second  Novartis  Agreement to design drugs for the
treatment  of obesity and eating  disorders.  In addition,  the Company  granted
Novartis  certain  rights  under  several of the  Company's  patents  and patent
applications.  The Company  retained the right to use its NPY  receptor  subtype
drug  discovery   systems  and  other  technology  for  all  other   therapeutic
applications,  although  Novartis has a right of first  negotiation in the event
the Company determines to seek a collaborative  partner or licensee for any such
other  indication.  Novartis has declined  its right of first  negotiation  with
respect to the use of the Company's NPY receptor subtype drug discovery  systems
and other technology for the discovery and

                                       21

<PAGE>



development of Y2 receptor  subtype-selective drugs for the treatment of central
nervous system disorders and, as a result,  the Company has the right to use the
technology, independently or with third parties, for such purpose.


         Warner-Lambert Agreement

         In  July  1997,  the  Company  and  Warner-Lambert   entered  into  the
Warner-Lambert  Agreement  pursuant to which they agreed to  collaborate  in the
identification  and  development  of galanin drugs for a variety of  therapeutic
applications. As part of the collaboration, Warner-Lambert received an exclusive
worldwide  license to use the Company's  galanin receptor subtype drug discovery
systems  for  the  development  and   commercialization   of  galanin   receptor
subtype-selective drugs for all therapeutic applications.

         The  collaboration  involves  two  potential  stages.  During the first
stage,  which  commenced  in October  1997 and will last up to 18  months,  each
partner will fund its own research and use Synaptic's  galanin  receptor subtype
drug discovery  systems to attempt to identify and characterize drug candidates.
The second stage of the  collaboration,  which will last for three  years,  will
commence at such time as the partners identify galanin compounds that are active
in animal models. During this stage, Warner-Lambert and Synaptic will attempt to
develop drug candidates identified during the first stage, as well as attempt to
identify additional drug candidates.  Upon the commencement of the second stage,
Synaptic is entitled to receive research  funding from Warner- Lambert,  as well
as to require  Warner-Lambert  to  purchase  equity in  Synaptic.  In  addition,
Synaptic is entitled to receive drug  development  milestones  and  royalties on
sales  of all  drugs  identified  through  the  collaboration.  There  can be no
assurance,  however, that any suitable galanin compound will be identified which
would trigger  commencement  of the second stage of the  collaboration  or that,
even assuming the  commencement  of such stage,  a product will result from this
collaboration.


         Grunenthal Agreement

         In January 1998, the Company and Grunenthal entered into the Grunenthal
Agreement pursuant to which they agreed to collaborate in the identification and
development of drugs for the alleviation of pain. As part of the  collaboration,
the  companies  will  jointly  select  receptors  that  may  play a role  in the
alleviation  of pain and  attempt to identify  compounds  that are active at the
selected receptors for further study in Grunenthal's  animal model systems.  The
selected  receptors may be receptors known to be implicated in the  transmission
or inhibition of pain or receptors  whose  function has not yet been  elucidated
but which are cloned from tissues known to be so  implicated.  The companies are
responsible  for their own expenses  incurred  during the research  stage of any
project undertaken as part of the collaboration but will each be responsible for
50% of all development costs incurred as part of the project with respect to any
resulting drug candidates up to the  commencement of Phase III clinical  trials.
Synaptic will retain  manufacturing  and marketing  rights in the United States,
Canada  and  Mexico  with  respect  to any drug  candidates  resulting  from the
collaboration,  while Grunenthal will retain  manufacturing and marketing rights
in Europe, Central America (other than Mexico) and South America with respect to
any such  candidates.  The two  companies  will share these  rights in all other
countries. With respect to each country in its own territories and in the shared
territories in which it desires to market a drug candidate, each of Synaptic and
Grunenthal  will be responsible  for conducting  Phase III clinical  trials,  if
required,   for  obtaining  any  necessary  regulatory  approval,  and  for  all
associated costs.

         As part of the  collaboration,  Synaptic  agreed to make  available  to
Grunenthal  for  evaluation  all  receptors  cloned  by  Synaptic  that  may  be
implicated in pain (to the extent not already  licensed  exclusively  to a third
party) and not to pursue such receptors,  independently or with any third party,
as targets of potential drugs for the

                                       22

<PAGE>



alleviation of pain during the evaluation  period applicable to the receptors or
during the period over which  activities  involving  any such receptor are being
jointly conducted with Grunenthal.

         Glaxo Agreement

         In March 1998,  the Company and Glaxo entered into the Glaxo  Agreement
pursuant to which the Company granted Glaxo (i) a nonexclusive license under the
Company's  alpha 1  adrenergic  receptor  patents to develop  and sell  alpha-1a
selective compounds for therapeutic applications other than the treatment of BPH
and (ii) until May 22, 1999, a nonexclusive license under its alpha 1 adrenergic
receptor  patents and its BPH use  patents to develop  but not to  commercialize
alpha-1a selective compounds for the treatment of BPH. In addition,  the Company
granted  Glaxo an  option  to obtain a  nonexclusive  license  under its alpha 1
adrenergic receptor patents and its BPH use patents to develop and commercialize
alpha-1a  selective   compounds  for  the  treatment  of  BPH.  Such  option  is
exercisable by Glaxo only until May 22, 1999, upon the payment to Synaptic of an
additional amount. As consideration for the foregoing licenses and option, Glaxo
made a  $2,000,000  payment to  Synaptic.  Synaptic is also  entitled to receive
royalties  on sales of all  alpha-1a  selective  drugs  sold by Glaxo so long as
Synaptic has an issued patent relating to an alpha 1 adrenergic receptor subtype
in at least one  major  market  country,  as well as  royalties  on sales of any
alpha-1a  antagonist  for the treatment of BPH in any country in which  Synaptic
has an issued BPH use patent.


         Other Agreements

         The Company's practice is to meet with pharmaceutical and biotechnology
companies on an on-going basis to discuss the possibility of collaborating  with
them on projects of mutual  interest,  which may include the Company's  existing
research programs that are not yet the subject of  collaborations.  In addition,
the Company continually evaluates opportunities for out-licensing its technology
on  a  collaborative  basis  or  on  a  noncollaborative   basis,   in-licensing
third-party technologies and/or cross-licensing technology to maximally leverage
resources.  At present,  the Company is in the early stages of  discussing  with
other companies the possibility of a number of such  arrangements.  There can be
no  assurance  that the Company  will be  successful  in  consummating  any such
arrangement.

         In  February  1996,  the Company  and The DuPont  Merck  Pharmaceutical
Company ("DuPont Merck") entered into an agreement pursuant to which the Company
granted  DuPont  Merck a  nonexclusive  license to use certain of the  Company's
alpha adrenergic drug discovery  systems for the development of alpha adrenergic
subtype-selective drugs. The license granted to DuPont Merck expired in February
1998.


Patents, Proprietary Technology and Trade Secrets

         The Company's  success  depends,  in part, on its ability to establish,
protect and enforce  its  proprietary  rights  relating to its  technology.  The
Company's  policy  is  to  seek,  when  appropriate,  protection  for  its  gene
discoveries,  compound  discoveries and other  proprietary  technology by filing
patent  applications in the United States and other  countries.  The Company has
filed  numerous  patent  applications  both in the  United  States  and in other
countries  covering its  inventions.  As of March 2, 1998,  the Company had been
issued  United  States  patents  relating  to the genes  that code for the human
serotonin 1B,  serotonin 1D,  serotonin 1E, serotonin 1F, serotonin 2A, alpha-1a
adrenergic,  alpha-2b  adrenergic,  NPY2,  NPY4 and NPY5  receptor  subtypes and
related drug discovery  systems,  as well as a United States patent covering the
rat  serotonin 4a receptor  subtype and related drug  discovery  systems.  These
patents expire at various times from 2008 to 2015. Several United States

                                       23

<PAGE>



patent  applications  relating to the Company's  receptor gene  discoveries were
pending.  In addition,  several  corresponding  patents had been issued in other
countries and additional  corresponding  patent  applications  had been filed in
other countries.

         In April 1995,  the Company was issued its first  functional use patent
in  the  United  States.  This  patent  covers  the  use of  selective  alpha-1a
antagonists for the treatment of BPH. In addition,  in November 1996, the United
States  Patent and  Trademark  Office  issued the Company an  additional  patent
relating to the same  subject  matter.  These patents expire in 2012. Additional
related patent  applications are on  file  in  the  United  States. In addition,
corresponding  patents have been  issued  in  other  countries  and   additional
corresponding  patent  applications  have  been  filed in other countries.

         The Company has also filed patent applications in the United States and
in  other  countries  covering  its  neurotransmitter  transporter  discoveries.
Whereas  receptors  are protein  molecules  which bind to and are  activated  by
certain ligands, transporters are protein molecules which serve to terminate the
action of certain  ligands by carrying  them back into the cells from which they
are  released.  As of March 2, 1998,  the Company had been issued  United States
patents  covering  three of these  transporter  discoveries.  The  Company is no
longer actively  working on its transporter  program.  However,  the transporter
technology,  insofar as it may be used to design  drugs for the  alleviation  of
pain,  has  been  reserved  exclusively  for  evaluation  by  Grunenthal  as the
potential focus of a joint program  between the Company and Grunenthal  pursuant
to the Grunenthal Agreement.  In addition, the Company is seeking to license its
transporter technology for other uses to one or more other companies.

         Additional  patent   applications   covering  the  Company's   compound
discoveries  and other  inventions  have been filed in the United  States and in
other countries and the Company intends to file additional  patent  applications
in the future.

         The Company has granted certain rights under several of its patents and
patent applications to Lilly, Merck,  Novartis,  Warner-Lambert,  Grunenthal and
Glaxo.

         Patent law as it relates to  inventions in the  biotechnology  field is
still evolving, and involves complex legal and factual questions for which legal
principles are not firmly  established.  Accordingly,  there can be no assurance
that  patents  will be  granted  with  respect  to any of the  Company's  patent
applications  currently  pending in the United States or in other countries,  or
with respect to applications  filed by the Company in the future. The failure by
the Company to receive patents pursuant to the  applications  referred to herein
and any future applications could have a material adverse effect on the Company.

         There is no clear  policy  involving  the breadth of claims  allowed in
patents or the degree of protection afforded  thereunder.  Accordingly,  no firm
predictions  can be made  regarding  the  breadth  or  enforceability  of claims
allowed in the patents  that have been issued to the Company or in patents  that
may be issued to the  Company in the future and there can be no  assurance  that
claims in the  Company's  patents,  either as  initially  allowed  by the United
States Patent and Trademark Office or any of its non-United States  counterparts
or as  subsequently  interpreted  by courts inside or outside the United States,
will be sufficiently broad to protect the Company's proprietary rights.

         Also,  there can be no assurance  that the Company's  patents or patent
applications  will  not be  challenged  by way of  interference  proceedings  or
opposed by third parties or that the Company will not be required to participate
in  interference  proceedings  or oppose the patents or patent  applications  of
third  parties in order to  protect  its  rights.  Interference  and  opposition
proceedings  can be expensive to prosecute and defend.  As of March 2, 1998, one
of the Company's  patent  applications on file outside the United States was the
subject of an

                                       24

<PAGE>



opposition  filed by a  pharmaceutical  company and one of the Company's  patent
applications  on file in the United  States was the  subject of an  interference
proceeding  involving a patent  application of a third party.  In addition,  the
Company is seeking to provoke an  interference  by the United  States Patent and
Trademark Office between another of its patent applications and an issued patent
of a third party.  The Company also  believes  that the United States Patent and
Trademark  Office may  declare an interference between  one of its other  patent
applications and patent a application  of a third  party.  The Company  recently
settled an interference proceeding involving an issued United States patent of a
third party and one of the Company's  patent  applications on file in the United
States.  The third  party  conceded as part of the  settlement  that the subject
matter of Synaptic's patent  application had priority over the subject matter of
its patent.  As a  consequence,  Synaptic  will be issued a patent  covering the
subject  matter and the third party's patent will be  revoked.  There  can be no
assurance  that the  outcome  of the  pending opposition  proceeding,  the other
interference  proceeding and the anticipated
interference proceedings will be favorable to the Company. In the event that the
outcome of the  opposition  proceeding  were  unfavorable  to the  Company,  the
Company would not be issued the patent in the country in which the proceeding is
taking place and would not be able to prevent third parties from  practicing the
subject  matter  of the  opposed  application  in that  country.  Moreover,  the
opponent  may,  whether  or not the  outcome  of the  opposition  proceeding  is
favorable to the Company,  seek to file similar  oppositions in other countries.
In the event that the outcome of the  interference  proceedings were unfavorable
to the Company,  the Company might not be able to practice the subject matter of
the  relevant  patent  applications  in  the  United  States.   Accordingly,  an
unfavorable  outcome in any such proceeding  would have an adverse effect on the
Company. Even if the eventual outcome of the pending opposition and interference
proceedings and the anticipated  interference  proceedings were favorable to the
Company, the Company's participation in them could result in substantial cost to
the Company.

         Further,  no assurance can be given that patents  issued to the Company
will not be infringed, invalidated or circumvented by others, or that the rights
granted  thereunder  will be commercially  valuable or will provide  competitive
advantages  to the Company and its present or future  collaborative  partners or
licensees.  Moreover,  because  patent  applications  in the  United  States are
maintained  in secrecy until  patents  issue,  because  patent  applications  in
certain other  countries  generally  are not published  until more than eighteen
months  after  they  are  filed  and  because   publication   of   technological
developments in the scientific or patent  literature  often lags behind the date
of such  developments,  the Company  cannot be certain  that it was the first to
invent the subject matter covered by its patents or patent  applications or that
it was the first to file patent  applications for such inventions.  The field of
gene  discovery has become  intensely  competitive.  A number of  pharmaceutical
companies,  biotechnology companies, universities and research institutions have
significantly  expanded  their gene  discovery  efforts in recent years and have
filed patent  applications or received patents covering their gene  discoveries.
Some of these  applications  or patents may be  competitive  with the  Company's
applications  or  conflict  in  certain  respects  with  claims  made  under the
Company's  applications.  There can be no  assurance  that,  in the event of any
conflict,   the  Company  will  be  in  a  priority  position  with  respect  to
inventorship on any of these applications.

         The  commercial  success of the Company also  depends on the  Company's
ability to operate without  infringing  patents and proprietary  rights of third
parties.  The  Company  is  aware  of a  large  number  of  patents  and  patent
applications  of third  parties  that  contain  claims to genes  that code for G
protein- coupled receptors and/or compounds that interact with G protein-coupled
receptors.  Patents  issued to others may  preclude  the  Company  from using or
licensing  its  technology  or may  preclude  the  Company or its  collaborative
partners and licensees from commercializing  drugs developed with the use of the
Company's  technology.  The  Company  has  acquired  a  license  to use  certain
technologies  covered by a patent  owned by Columbia  University.  The  Columbia
University  license is a worldwide  non-exclusive  license to manufacture,  use,
sell and  sublicense  drugs  derived  from the use of  certain  recombinant  DNA
technology.  In  consideration  for such license,  the Company has agreed to pay
royalties on sales of drugs developed through the use of such license.  The term
of the license  extends until the expiration of the last to expire of the patent
rights covered by the license. The Company may be required to

                                       25

<PAGE>



obtain  additional  licenses  to  patents or other  proprietary  rights of other
parties in order to pursue its own technologies.  No assurance can be given that
any such additional  licenses would be made available on terms acceptable to the
Company,  if at all. The failure to obtain such licenses  could result in delays
in the  Company's  or its  collaborative  partners'  activities,  including  the
development,  manufacture or sale of drugs requiring such licenses,  or preclude
such development, manufacture or sale.

         In some cases,  litigation  or other  proceedings  may be  necessary to
assert   infringement  claims  against  others,  to  defend  against  claims  of
infringement,  to  enforce  patents  issued to the  Company,  to  protect  trade
secrets, know-how or other intellectual property rights owned by the Company, or
to determine the scope and validity of the proprietary  rights of third parties.
Such litigation could result in substantial  costs to and diversion of resources
by the Company and could have a material  adverse  effect on the Company.  There
can be no assurance that any of the Company's  patents would  ultimately be held
valid or that efforts to defend any of its patents,  trade secrets,  know-how or
other  intellectual  property rights would be successful.  An adverse outcome in
any such  litigation  or  proceeding  could  subject the Company to  significant
liabilities,  require  the  Company to cease  using the  subject  technology  or
require the Company to license the subject  technology from the third party, all
of which could have a material adverse effect on the Company's business.

         In  addition  to patent  protection,  the  Company  relies  upon  trade
secrets,  proprietary know-how and continuing  technological advances to develop
and maintain its competitive  position.  To maintain the  confidentiality of its
trade secrets and proprietary  information,  the Company requires its employees,
consultants and  collaborative  partners to execute  confidentiality  agreements
upon the commencement of their  relationships  with the Company.  In the case of
employees,  the agreements also provide that all inventions  resulting from work
performed  by them  while in the  employ of the  Company  will be the  exclusive
property  of  the  Company.  There  can be no  assurance,  however,  that  these
agreements will not be breached,  that the Company would have adequate  remedies
in the  event  of any  such  breach  or that  the  Company's  trade  secrets  or
proprietary   information   will  not   otherwise   become  known  or  developed
independently by others.


Competition

         The Company operates in a field in which new developments occur and are
expected to continue to occur at a rapid pace.  Competition  from  biotechnology
and  pharmaceutical  companies,  joint  ventures,  academic  and other  research
institutions  and others is intense and is expected to  increase.  Although  the
Company  believes that the elements of its human  receptor-targeted  drug design
technology and the manner in which the Company has integrated these elements are
proprietary to the Company,  one or more of such elements are currently employed
by many other pharmaceutical and biotechnology companies in their drug discovery
efforts.  Moreover,  there are other  companies with drug discovery  programs at
least some of the objectives of which are the same as or similar to those of the
Company. The Company is aware of many pharmaceutical and biotechnology companies
that  are  engaged  in  efforts  to  develop  compounds  that  interact  with  G
protein-coupled  receptors subtypes,  including receptor subtypes with which the
Company is working.  Many of the Company's  competitors are large  biotechnology
companies  and  multinational  pharmaceutical  companies  who may employ in such
activities greater financial and other resources,  including larger research and
development staffs and more extensive marketing and manufacturing organizations,
than the Company or its collaborative partners.

         The Company  also  expects to encounter  significant  competition  with
respect to the drugs that it and its  collaborative  partners and licensees plan
to develop.  Companies that complete clinical trials, obtain required regulatory
approvals and commence  commercial sales of their drugs before their competitors
may  achieve  a  significant   competitive   advantage.   In  order  to  compete
successfully, the Company's goal is to obtain patent

                                       26

<PAGE>



protection for its gene discoveries and drug discovery systems and to make these
systems  available  to  pharmaceutical   companies  through   collaborative  and
licensing arrangements for use in discovering drugs for major markets which have
historically  been difficult to address using the  traditional  approach to drug
discovery.  There can be no  assurance,  however,  that the Company  will obtain
patents covering its technology that protect it against  competitors.  Moreover,
there can be no assurance  that the  Company's  competitors  will not succeed in
developing  technologies  that circumvent the Company's  technology or that such
competitors will not succeed in developing  technologies and drugs that are more
effective than those developed by the Company and its collaborative partners and
licensees  or that  would  render  technology  or drugs of the  Company  and its
collaborators and licensees less competitive or obsolete. In addition, there can
be no  assurance  that  competitors  of the Company  will not obtain  regulatory
approvals  of their drugs more  rapidly  than the Company and its  collaborative
partners and licensees,  thereby  rendering the Company's and its  collaborative
partners' and licensees' drugs noncompetitive or obsolete.  Moreover,  there can
be no assurance that the Company's competitors will not obtain patent protection
or other  intellectual  property  rights that would limit the  Company's  or its
collaborative  partners' and licensees' ability to use the Company's  technology
or commercialize its or their drugs.


Government Regulation

         The development, manufacturing and marketing of drugs developed through
the use of the  Company's  technology  are  subject to  regulation  by  numerous
Federal,  state and local  governmental  authorities in the United  States,  the
principal  one of which is the FDA, and by similar  agencies in other  countries
(each of such  Federal,  state,  local and other  authorities  and  agencies,  a
"Regulatory  Agency").  Regulatory  Agencies  impose  mandatory  procedures  and
standards for the conduct of certain preclinical testing and clinical trials and
the  production  and  marketing  of drugs for  human  therapeutic  use.  Product
development and approval of a new drug are likely to take many years and involve
the expenditure of substantial resources.

         The steps  required  by the FDA before new drugs may be marketed in the
United States include: (i) preclinical  studies;  (ii) the submission to the FDA
of a request for authorization to conduct clinical trials on an  investigational
new drug (an "IND");  (iii)  adequate  and  well-controlled  clinical  trials to
establish  the  safety  and  efficacy  of the drug for its  intended  use;  (iv)
submission to the FDA of a new drug  application (an "NDA");  and (v) review and
approval of the NDA by the FDA.

         In the United States, preclinical testing includes both in vitro and in
vivo laboratory  evaluation and characterization of the safety and efficacy of a
drug and its  formulation.  Laboratories  involved in  preclinical  testing must
comply with FDA  regulations  regarding Good Laboratory  Practices.  Preclinical
testing  results are submitted to the FDA as part of the IND and are reviewed by
the FDA prior to the  commencement  of human  clinical  trials.  Unless  the FDA
objects to an IND, the IND will become  effective 30 days  following its receipt
by the FDA. There can be no assurance  that  submission of an IND will result in
the commencement of human clinical trials.

         Clinical   trials,    which   involve   the   administration   of   the
investigational  drug to healthy volunteers or to patients under the supervision
of  a  qualified  principal  investigator,  are  typically  conducted  in  three
sequential  phases,  although the phases may overlap with one another.  Clinical
trials must be  conducted  in  accordance  with Good  Clinical  Practices  under
protocols that detail the objectives of the study,  the parameters to be used to
monitor safety and the efficacy criteria to be evaluated.  Each protocol must be
submitted to the FDA as part of the IND.  Further,  each clinical  study must be
conducted under the auspices of an independent  Institutional  Review Board (the
"IRB")  at the  institution  where  the study  will be  conducted.  The IRB will
consider, among other

                                       27

<PAGE>



things, ethical factors, the safety of human subjects and the possible liability
of the institution. Compounds must be formulated according to the FDA's GMP.

         Phase I clinical  trials  represent the initial  administration  of the
investigational drug to a small group of healthy human subjects or, more rarely,
to a group of selected patients with the targeted disease or disorder.  The goal
of Phase I clinical  trials is typically to test for safety  (adverse  effects),
dose  tolerance,  absorption,  bio-  distribution,   metabolism,  excretion  and
clinical  pharmacology  and,  if  possible,  to gain  early  evidence  regarding
efficacy.

         Phase II clinical  trials involve a small sample of the actual intended
patient  population  and seek to assess the  efficacy  of the drug for  specific
targeted indications, to determine dose tolerance and the optimal dose range and
to gather  additional  information  relating  to safety  and  potential  adverse
effects.

         Once an  investigational  drug is found to have  some  efficacy  and an
acceptable safety profile in the targeted patient population, Phase III clinical
trials are initiated to establish  further  clinical  safety and efficacy of the
investigational  drug in a broader sample of the general  patient  population at
geographically   dispersed  study  sites  in  order  to  determine  the  overall
risk-benefit  ratio  of the  drug  and to  provide  an  adequate  basis  for all
physician  labeling.  The  results  of the  research  and  product  development,
manufacturing,  preclinical testing, clinical trials and related information are
submitted  to the FDA in the form of an NDA for  approval of the  marketing  and
shipment of the drug.

         Timetables for the various  phases of clinical  trials and NDA approval
cannot be predicted with any certainty.  The Company, its collaborative partners
or  licensees  or the FDA  may  suspend  clinical  trials  at any  time if it is
believed  that  individuals  participating  in such trials are being  exposed to
unacceptable  health risks. Even assuming that clinical trials are completed and
that an NDA is submitted to the FDA, there can be no assurance that the NDA will
be reviewed by the FDA in a timely manner or that once reviewed, the NDA will be
approved. The approval process is affected by a number of factors, including the
severity of the targeted indications, the availability of alternative treatments
and the risks and benefits  demonstrated in clinical trials. The FDA may deny an
NDA if  applicable  regulatory  criteria  are  not  satisfied,  or  may  require
additional testing or information with respect to the investigational drug. Data
obtained from  preclinical  and clinical  activities are  susceptible to varying
interpretations  which  could also  delay,  limit or prevent  Regulatory  Agency
approval. Even if initial FDA approval is obtained,  further studies,  including
post-market  studies,  may be  required in order to provide  additional  data on
safety and will be required in order to gain  approval  for the use of a product
as a treatment for clinical  indications  other than those for which the product
was initially tested.  The FDA will also require  post-market  reporting and may
require  surveillance  programs to monitor the side effects of the drug. Results
of  post-marketing  programs  may limit or expand the further  marketing  of the
drug. Further, if there are any modifications to the drug,  including changes in
indication, manufacturing process or labeling, an NDA supplement may be required
to be submitted to the FDA.  Finally,  delays or rejections  may be  encountered
based  upon  changes  in  Regulatory  Agency  policy  during  the period of drug
development and/or the period of review of any application for Regulatory Agency
approval for a compound.  Moreover,  because most of the Company's collaborative
partners are generally  responsible for preclinical  testing,  clinical  trials,
regulatory approvals,  manufacturing and commercialization of drugs, the ability
to obtain and the timing of  regulatory  approvals are not within the control of
the Company.  There can be no assurance that the regulatory  framework described
above will not  change or that  additional  regulations  will not arise that may
affect approval of a potential drug.

         Each  manufacturing  establishment for new drugs is required to receive
some form of approval by the FDA.  Among the conditions for such approval is the
requirement   that  the   prospective   manufacturer's   quality   control   and
manufacturing procedures conform to GMP, which must be followed at all times. In
complying with

                                       28

<PAGE>



standards set forth in these regulations,  manufacturers must continue to expend
time,  monies and effort in the area of production and quality control to ensure
full  technical  compliance.  Manufacturing  establishments,  both  foreign  and
domestic,  are also subject to  inspections by or under the authority of the FDA
and may be subject to inspections  by foreign and other Federal,  state or local
agencies.

         Prior to the  commencement  of marketing a product in other  countries,
approval by the Regulatory Agencies in such countries is required, regardless of
whether FDA  approval  has been  obtained  for such  product.  The  requirements
governing the conduct of clinical trials and product  approvals vary widely from
country to country,  and the time required for approval may be longer or shorter
than the time required for FDA approval.  Although there are some procedures for
unified filings for certain European countries, in general, each country has its
own procedures and requirements.

         Delays in obtaining  Regulatory Agency approvals could adversely affect
the  marketing  of any  drugs  developed  by the  Company  or its  collaborative
partners or  licensees,  impose  costly  procedures  upon the  Company's  or its
collaborative  partners' or  licensees'  activities,  diminish  any  competitive
advantages  that the  Company or its  collaborative  partners or  licensees  may
attain and  adversely  affect the  Company's  ability  to  receive  revenues  or
royalties.   There  can  be  no  assurance   that,  even  after  such  time  and
expenditures,  Regulatory  Agency  approvals  will be obtained for any compounds
developed  by, in  collaboration  with or pursuant to licenses from the Company.
Moreover,  even if Regulatory  Agency  approval for a compound is granted,  such
approval  may  entail  limitations  on the  indicated  uses for  which it may be
marketed.  Further,  approved  drugs  and their  manufacturers  are  subject  to
continual  review,  and discovery of previously  unknown problems with a drug or
its  manufacturer  may  result in  restrictions  on such  drug or  manufacturer,
including withdrawal of the drug from the market.  Regulatory Agency approval of
prices is required in many  countries  and may be required for the  marketing of
any drug developed by the Company or its collaborative partners or licensees.

         As with many biotechnology and pharmaceutical  companies, the Company's
activities involve the use of radioactive compounds and hazardous materials. The
Company is subject to local, state and Federal laws and regulations  relating to
occupational safety,  laboratory practices, the use, handling and disposition of
radioactive materials, environmental protection and hazardous substance control.
Although  the Company  believes  that its safety  procedures  for  handling  and
disposing of  radioactive  compounds and other  hazardous  materials used in its
research and  development  activities  comply with the  standards  prescribed by
Federal,  state and local regulations,  the risk of accidental  contamination or
injury from these materials cannot be completely eliminated. In the event of any
such accident,  the Company could be held liable for any damages that result and
any such liability could exceed the resources of the Company.


Employees

         As of March 2, 1998,  the Company had 125  full-time  employees,  42 of
whom hold Ph.D. or M.D. degrees. Of the Company's full-time employees,  108 were
engaged  directly  in  scientific  research  and 17 were  engaged in general and
administrative   functions.   The  Company's   scientific   staff  members  have
diversified   experience   and   expertise  in  molecular   and  cell   biology,
biochemistry,  molecular pharmacology,  medicinal, structural, combinatorial and
computer-assisted chemistry and information systems.

         All employees have entered into agreements with the Company pursuant to
which  they are  prohibited  from  disclosing  to third  parties  the  Company's
proprietary  information and assign to the Company all rights to inventions made
by them during their employment with the Company.


                                       29

<PAGE>



         The  Company's  employees  are not covered by a  collective  bargaining
agreement,  and the Company believes that its relationship with its employees is
good.


Item 2.  Properties

         The Company  leases  laboratory  and office  space in a facility at 215
College  Road in Paramus,  New  Jersey.  The Company  recently  entered  into an
amendment  to its  lease  which  extended  the term  through  the year  2015 and
increased its leased space to up to 74,000 square feet. The Company is currently
converting a portion of its space into additional research  laboratories and may
renovate  other portions of its space in 1998 for  additional  laboratories  and
offices.  The Company believes that the space it currently leases is adequate to
accommodate the anticipated administrative and research needs of the Company for
the foreseeable future.


Item 3.  Legal Proceedings

         Other than as  described  in Item 1 above under the  caption  "Patents,
Proprietary  Technology  and Trade  Secrets,"  the Company is not a party to any
legal proceedings.


Item 4.  Submission of Matters to a Vote of Securityholders

         None.

                                       30

<PAGE>



                                     Part II


Item 5. Market For Registrant's Common Equity and Related Stockholder Matters

         The Common Stock of Synaptic  Pharmaceutical  Corporation has traded on
the National  Market tier of The Nasdaq Stock Market under the symbol SNAP since
its initial  public  offering on December 13, 1995.  As of March 2, 1998,  there
were  approximately  2,300 holders of record of the Company's  Common Stock.  No
dividends  have been paid on the Common Stock to date,  and the Company does not
currently intend to declare or pay dividends for the foreseeable future.

         The  following  tables set forth the high and low last trade prices for
the Common  Stock as  reported  by The Nasdaq  Stock  Market for the period from
January 1, 1996, through December 31, 1997.


                                1997 Fiscal Year

                                      High              Low
                                      ----              ----

         1st Quarter 1997             15 1/2            12 1/4

         2nd Quarter 1997             14                10 3/8

         3rd Quarter 1997             15 5/8            12 3/8

         4th Quarter 1997             16 3/4            10


                                1996 Fiscal Year

                                     High              Low
                                     ----              ----

         1st Quarter 1996            20                12 1/2

         2nd Quarter 1996            17 3/4            12 1/4

         3rd Quarter 1996            14                 9 1/2

         4th Quarter 1996            13                10 1/2


         During the quarter  ended  December 31, 1997,  the Company did not make
any sales of its  securities,  other than sales that were  registered  under the
Securities Act of 1933, as amended (the "Securities Act").

         Securities Act Rule 229.463 ("Rule 463") required  issuers to report on
Form SR their use of proceeds,  following an initial public offering, within ten
days of the first three months  following the effective date of the registration
statement,  and every six months  thereafter,  until the application of all such
proceeds was  complete.  Effective  September  2, 1997,  pursuant to Release No.
34-38850, the Securities and Exchange Commission

                                       31

<PAGE>



("SEC")  amended  Rule 463 to  eliminate  Form SR and now  requires a first-time
registrant to report the application of proceeds in each of its periodic reports
filed pursuant to the requirements  under the Exchange Act until the application
of such proceeds is complete.  Prior to September 2, 1997, the Company  utilized
Form SR to report the application of proceeds  received by the Company following
its initial public offering.

         The information  provided below represents a reasonable estimate of the
cumulative  application,  through  December  31,  1997,  of the net  proceeds of
$25,194,000 which were received  following the Company's initial public offering
on December 13, 1995:


Construction of plant, building and facilities                 $    282,000

Purchase and installation of machinery and equipment           $  3,252,000

Working capital used to fund operations                        $ 13,262,000


         Except for payments described in the following sentence, the cumulative
application of the net offering proceeds listed above represents direct payments
to others. No payments were made to directors or officers or to their associates
except for payments made in the ordinary  course of business which include,  but
may not be limited to, the payment of officer  salaries,  fringe  benefits,  and
expense reimbursements or compensation paid to directors for their attendance at
board  meetings or for their services  provided to the Company under  consulting
arrangements, if any.

         At December 31, 1997, the status of proceeds pending final  application
are as follows:


Temporary investment of proceeds in marketable securities      $  8,398,000


                                       32

<PAGE>



Item 6.       Selected Financial Data


         The  following  table  presents  selected  information  relating to the
financial  condition  and results of operations of the Company for the past five
years.  The  following  data should be read in  conjunction  with the  Company's
financial statements.

(In thousands, except per share information)


                             1997       1996       1995       1994       1993
                          --------   --------   --------   --------   -------- 
Total revenues            $ 10,307   $  9,481   $  7,977   $  5,043   $  8,794
Total expenses            $ 17,853   $ 14,319   $ 12,078   $ 11,221   $ 10,753
Other income, net         $  2,200   $  2,205   $    734   $    651   $    409
Net loss                  $ (5,346)  $ (2,633)  $ (3,367)  $ (5,527)  $ (1,550)
Basic and diluted net
   loss per share         $  (0.66)  $  (0.35)  $  (4.76)        --         --
Total assets              $ 69,402   $ 40,355   $ 40,913   $ 20,024   $ 19,754
Long term debt                  --         --   $    107   $    259   $    383
Convertible redeemable
   preferred stock              --         --         --   $ 36,199   $ 28,906
Accumulated deficit       $(29,316)  $(23,970)  $(21,337)  $(17,970)  $(12,443)
Stockholders'
     equity (deficiency)  $ 67,704   $ 39,040   $ 38,669   $(17,592)  $(11,929) 



Item 7.  Management's Discussion and Analysis of Financial Condition and Results
          of Operations

Overview

         Synaptic Pharmaceutical  Corporation is a biotechnology company engaged
in the  development  of a broad platform of enabling  technology  which it calls
"human   receptor-targeted   drug  design  technology."  It  is  utilizing  this
technology  both to  discover  and clone the genes that code for human  receptor
subtypes  associated  with specific  disorders and to design  compounds that can
potentially be developed as drugs for treating these disorders. During 1997, the
Company was engaged in collaborations  with four pharmaceutical  companies:  Eli
Lilly and Company,  Merck & Co., Inc., Novartis Pharma AG and the Warner-Lambert
Company.  Since  inception,  the Company has financed its  operations  primarily
through  the sale of stock  and  through  funds  provided  by its  collaborative
partners Lilly, Merck and Novartis under collaborative  agreements.  The Company
also granted a  nonexclusive  license to use certain of its technology to DuPont
Merck which license expired on February 5, 1998.

         Under its collaborative agreements,  the Company may receive one or two
types of revenue from its collaborative  partners:  contract revenue and license
revenue.  Contract  revenue  includes  research  funding to support a  specified
number  of the  Company's  scientists  and  payments  upon  the  achievement  of
specified  research and  development  milestones.  Research  funding  revenue is
recognized  ratably over the period of the  agreement to which it relates and is
based  upon  predetermined  funding  requirements.  Research  milestone  payment
revenue is recognized when the related research  milestone is achieved.  License
revenue represents non-refundable

                                       33

<PAGE>



payments for licenses to the Company's  technology and drug  discovery  systems.
Non-refundable  payments for licenses  are  recognized  at such time as they are
received or, if earlier, become guaranteed.  In addition to contract revenue and
license revenue,  if a drug is developed as a result of any of the collaborative
agreements  between the Company and its collaborative  partners,  the Company is
entitled to receive  royalty  payments  based upon the sale of such  drugs.  The
Company also receives  revenues from government  grants under the Small Business
Innovative Research ("SBIR") program of the National Institutes of Health.

         To  date,  the  Company's  expenditures  have  been  for  research  and
development related expenses, general and administrative related expenses, fixed
asset purchases and various patent related  expenditures  incurred in protecting
the Company's technologies.  The Company has been historically  unprofitable and
had an  accumulated  deficit of  $29,316,000  at December 31, 1997.  The Company
expects to continue to incur operating losses for a significant  number of years
and may not become  profitable,  if at all,  until it begins to receive  royalty
revenue.  To date, the Company has not received any royalty revenue and does not
expect to receive such revenue for a significant number of years, if at all.


Results of Operations

         Comparison of Fiscal Years Ended December 31, 1997, 1996 and 1995

         Revenues. The Company recognized revenue of $10,307,000, $9,481,000 and
$7,977,000  for the  fiscal  years of 1997,  1996 and  1995,  respectively.  The
increase  of  $826,000  from  1996 to 1997 was  attributable  primarily  to:  an
increase in contract  revenue of $2,842,000  resulting from the expansion of the
Company's  collaborative  arrangement  with Lilly and increases in rates charged
per full-time equivalent  scientist under collaborative  arrangements from which
the  Company  receives  research  funding  partially  offset  by a  decrease  of
$2,000,000  of  non-recurring  license  revenue  under  the  terms of one of the
Company's license and collaboration agreements during the third quarter of 1996.

         The increase of $1,504,000 from 1995 to 1996 was attributable primarily
to  the  recognition  of the  $2,000,000  of  license  revenue  from  one of the
Company's  collaborative  partners and an increase of $231,000 of grant  revenue
over the comparable  period in 1995,  both of which were  partially  offset by a
decrease of contract revenue of $727,000.  This decrease in contract revenue was
attributable  primarily to the receipt in 1995 of a one-time  $1,000,000 payment
from  one of the  Company's  collaborative  partners  for the  achievement  of a
specific  milestone that was partially  offset by increases in 1996 in the rates
charged  to  the  Company's  collaborative  partners  per  full-time  equivalent
scientist.

         Research and Development  Expenses.  The Company incurred  research and
development  expenses of $13,781,000,  $11,337,000 and $9,863,000 for the fiscal
years of 1997, 1996 and 1995, respectively.  The increase of $2,444,000, or 22%,
from 1996 to 1997 was  attributable  primarily  to: an increase of $1,274,000 in
compensation   expense   resulting   from  an  increase  in  average   headcount
year-to-year,  annual salary and bonus  increases and an associated  increase in
fringe benefit  expenses;  an increase of $726,000 in research supply costs; and
an increase of $397,000 in facility related costs.

         The increase of $1,474,000,  or 15%, from 1995 to 1996 was attributable
primarily to: an increase of $656,000 in compensation  expense resulting from an
increase in average  headcount  year-to-year,  annual salary and bonus increases
and an associated  increase in fringe benefit expense, as well as an increase in
amortization  of  deferred  compensation;  an  increase  of $482,000 in research
supply costs; an increase of $112,000 in research

                                       34

<PAGE>



equipment  costs  related to research  funded by government  grants;  $92,000 in
increased  depreciation  expense; and an increase of $53,000 in software license
fees.

         General and Administrative  Expenses.  The Company incurred general and
administrative expenses of $4,072,000,  $2,982,000 and $2,215,000 for the fiscal
years of 1997, 1996 and 1995, respectively.  The increase of $1,090,000, or 37%,
from 1996 to 1997 was attributable primarily to an increase in patent and patent
related  expenses  resulting  from increased  patent related  activities and the
expensing  of all patent and patent  application  costs as  incurred,  effective
October 1, 1996.

         The increase of $767,000,  or 35%,  from 1995 to 1996 was  attributable
primarily to: an increase of $292,000 in expenses associated with being a public
company;  an  increase of $193,000 in  compensation  expense  resulting  from an
increase  in average  headcount  and annual  salary and bonus  increases  and an
associated increase in fringe benefit expense; an increase of $171,000 in patent
and patent  related  costs;  and an  increase  of $64,000 in certain  supply and
computer related expenses.

         Other Income,  Net. The Company received other income,  net of interest
expense,  of  $2,200,000,  $2,205,000 and $734,000 for the fiscal years of 1997,
1996 and 1995, respectively.

         The increase of $1,471,000  from 1995 to 1996 in other  income,  net of
interest expense,  was primarily  attributable to an increase in interest income
as a result of an increase in the average cash,  cash  equivalent and marketable
security  balance  resulting  from the  Company's  initial  public  offering  in
December 1995.

         Net Loss and Net Loss Per Share.  The net loss  incurred by the Company
was $5,346,000  ($0.66 per share),  $2,633,000  ($0.35 per share) and $3,367,000
($4.76 per share) for the fiscal years of 1997, 1996 and 1995, respectively. The
increase of $2,713,000 in net loss from 1996 to 1997 was primarily  attributable
to the recognition  during 1996 of $2,000,000 of  non-recurring  license revenue
offset by higher total expenses.

         The decrease of $734,000 in net loss from 1995 to 1996 was attributable
primarily to: the increase of $2,000,000 of  non-recurring  license  revenue and
other income, offset by higher total expenses.

         Operating  Trends.  It is expected that research  funding from existing
collaborations  will decrease from  $9,785,000 in 1997 to $7,100,000 in 1998. It
is also  expected  that  operating  expenses  will  increase in order to further
support  existing  collaborations  and  internal  research  efforts.   Operating
expenses  are  expected  to  continue  to grow,  at a minimum,  consistent  with
historical  trends.  Patent related  expenditures are expected to grow at a rate
that is faster than the historical operating expense growth rate.

         Other  income,  net is expected to decline in 1998 and 1999 as existing
funds are utilized to support the Company's operations.

         Property  and  equipment  costs are expected to continue to increase as
the Company's currently underutilized space is converted into laboratory space.

         Management has performed a review of the computer hardware and software
components that the Company currently  utilizes in order to determine the impact
that the year 2000 issue will have on the Company's  future  operating  results,
future financial  condition and on the future operations of its business.  Based
on the results of the review,  management has concluded that the impact the year
2000 issue will have on the aforementioned will be immaterial.


                                       35

<PAGE>



         The Company does not believe that  inflation has had a material  impact
on its results of operations.


Liquidity and Capital Resources

         At December 31, 1997 and 1996,  cash,  cash  equivalents and marketable
securities aggregated $62,100,000 and $34,684,000, respectively. The increase of
$27,416,000  was  attributable  primarily to the receipt of  $33,822,000  in net
proceeds  raised  in a public  offering  offset by cash  used in  operations  of
$4,310,000 and capital expenditures of $2,888,000.

         To date, the Company has met its cash requirements  through the sale of
its stock,  through  licensing  fees,  research  funding and milestone  payments
received  under the  collaborative  agreements  with Lilly,  Merck and Novartis,
through  SBIR  grants and  through  interest  earned on its  investments.  As of
December 31, 1997,  the Company had received:  $96,300,000  from the sale of its
stock;  $47,200,000 in licensing fees,  research funding and milestone  payments
under its collaborative agreements; $3,400,000 in SBIR grants; and $6,600,000 in
other income, net. To date, the portion of these funds that has been expended by
the Company has been used  principally  to fund  research  and  development,  to
purchase fixed assets used primarily in its research  activities,  to create its
patent estate and to pay general and administrative support costs.

         At  December  31,  1997,  the Company  was  involved  in  collaborative
arrangements with Lilly, Merck,  Novartis and  Warner-Lambert.  Lilly, Merck and
Novartis  provided  research funding to the Company during 1997 and are expected
to provide  research funding to the Company during 1998. The aggregate amount of
research funding under these  arrangements  which the Company expects to receive
during 1998 is $7,100,000.  Warner- Lambert does not currently  provide research
funding to the Company and the Company does not expect that such funding will be
provided,  if at all, until 1999.  Research funding under the Lilly agreement is
scheduled  to expire on December  31,  1998.  Research  funding  under the Merck
agreement is scheduled to expire on November 30, 1998.  Research  funding  under
the Novartis agreement is scheduled to expire on August 3, 1998.

         At  December  31,  1997,  the  Company had  invested  an  aggregate  of
$8,447,000 in property and equipment. The Company continues to convert currently
underutilized space into laboratory facilities beyond the level which existed at
December 31, 1997.

         In November 1997, the Company extended its lease  agreement,  which was
due to expire on December 31, 1999,  until December 31, 2015. The minimum annual
payment under the lease is currently  $644,000.  A standby  letter of credit for
$580,000 has been issued to the Company's  landlord as a security deposit and is
secured by  investment  securities  of the  Company  which are, to the extent of
$600,000,  recorded  in the balance  sheet as  "Restricted  Cash." This  standby
letter of credit must be renewed annually during the life of the lease.

         At  December  31,  1997,  the  Company had  $62,100,000  in cash,  cash
equivalents  and  marketable  securities.  The Company  intends to utilize these
funds primarily to conduct its current and future research programs, for general
corporate  purposes and to make leasehold  improvements to its facilities beyond
the level which existed on December 31, 1997. It is anticipated that the Company
will continue to incur  significant  operating  losses for a number of years and
will  require  the use of cash to finance  its  capital  programs.  The  Company
believes  that its cash on hand,  together  with the funds  that it  expects  to
receive from its  collaborative  partners,  interest  income and funds  received
under SBIR grants,  will be  sufficient to fund an increased  operating  expense
level and an  increased  level of capital  spending  through the year 2000.  The
Company expects to continue to incur operating losses for a number of years.


                                       36

<PAGE>



         As  of  December  31,  1997,   the  Company  had  net  operating   loss
carryforwards of approximately  $25,000,000 for Federal income tax purposes that
will expire principally in the years 2002 through 2012. In addition, the Company
had research and development credit  carryforwards which will expire principally
in 2002 through 2009. For financial  reporting  purposes,  a valuation allowance
has  been  recognized  to  offset  the  deferred  tax  assets  related  to these
carryforwards.  Due to limitations imposed by the Tax Reform Act of 1986, and as
a result of a significant  change in the  Company's  ownership in 1993 and 1997,
the utilization of $25,000,000 of net operating loss carryforwards is subject to
annual  limitation.  The utilization of the research and development  credits is
similarly limited.


Disclosure Regarding Forward-Looking Statements

         This Report includes "forward-looking statements" within the meaning of
Section 27A of the  Securities  Act and Section 21E of the Exchange  Act.  These
forward-looking  statements  include,  but are not limited to, those relating to
future  cash  and  spending   plans,   amounts  of  future   research   funding,
patent-related  plans,  additional drug discovery  programs,  the effectiveness,
efficacy,  or other  results of any of the Company's  technology  or drugs,  any
other statements regarding future growth,  future cash needs, future operations,
business plans and financial  results,  and any other  statements  which are not
historical  facts.  When  used  in  this  document,   the  words   "anticipate,"
"estimate,"  "expect," "may," "project," and similar expressions are intended to
be  among  the  statements  that  identify  forward-looking   statements.   Such
statements involve risks and uncertainties, including, but not limited to, those
risks and  uncertainties  relating to those  described  below,  as well as other
factors  detailed  elsewhere in this Report,  including in Item 1 of this Report
under  the  captions  "Patents,   Proprietary  Technology  and  Trade  Secrets,"
"Competition"  and  "Government  Regulation"  ("Cautionary  Statements").   Such
Cautionary  Statements qualify the  forward-looking  statements included in this
Report.  Should  one or more of these  risks or  uncertainties  materialize,  or
should  underlying  assumptions  prove  incorrect,   actual  outcomes  may  vary
materially from those indicated. All subsequent written and oral forward-looking
statements  attributable  to the  Company  or  persons  acting on its behalf are
expressly qualified in their entirety by the Cautionary Statements.


Early Stage of Product Development; Technological Uncertainty

         Since its  inception  in January  1987,  the  Company  has  focused its
activities on the  discovery  and cloning of receptor  genes and the use of such
genes as tools in the design of precisely  targeted  compounds for a broad range
of therapeutic applications.  To date, the Company has not completed development
of any drugs alone or in  collaboration  with its  partners  and does not expect
that any drugs resulting from its or its  collaborative  partners' or licensees'
research  and  development   efforts  will  be  commercially   available  for  a
significant number of years, if at all. All compounds  discovered by the Company
and its collaborative  partners and licensees will require extensive preclinical
and clinical  testing  prior to  submission of any  regulatory  application  for
commercial use. Extensive preclinical and clinical testing required to establish
safety  and  efficacy  will  take  several  years,  and  the  time  required  to
commercialize new drugs cannot be predicted with accuracy.  Moreover,  potential
products  that appear to be promising at early stages of  development  may never
reach the market for a number of reasons. Such reasons include the possibilities
that potential products are found during preclinical  testing or clinical trials
to be  ineffective  or to cause harmful side effects,  that they fail to receive
necessary  regulatory  approvals,  that they are  difficult or  uneconomical  to
manufacture  on a large scale,  that they fail to achieve  market  acceptance or
that they are precluded from  commercialization  by proprietary  rights of third
parties.  There  can  be no  assurance  that  the  Company's  approach  to  drug
discovery,  its research and development efforts or the efforts of Lilly, Merck,
Novartis,  Warner-Lambert,  Grunenthal  or Glaxo,  or any  future  collaborative
partner or licensee of the Company, will result in the development of any drugs,
or that any drugs, if successfully developed, will be proven to be safe

                                       37

<PAGE>



and effective in clinical trials,  receive  required  regulatory  approvals,  be
capable of being manufactured in commercial quantities at reasonable costs or be
successfully  commercialized.  Product  development  of new  pharmaceuticals  is
highly  uncertain,  and  unanticipated   developments,   including  clinical  or
regulatory  delays,   unexpected  adverse  effects  and  inadequate  therapeutic
efficacy,  would slow or prevent product  development efforts of the Company and
its  collaborative  partners and licensees and have a material adverse effect on
the Company's operations.


Dependence on Collaborative Partners and Licensees for Development, Regulatory
 Approvals, Manufacturing, Marketing and Other Resources

         A key  element  of  the  Company's  business  strategy  is to  leverage
resources  by  entering  into  collaborative  and  licensing  arrangements  with
pharmaceutical companies.  Under the Collaborative Agreements with Lilly, Merck,
Novartis  and  Warner-Lambert,  the  Company's  collaborative  partners are each
responsible for conducting  preclinical testing and clinical trials of compounds
developed  through the use of the  Company's  technology,  obtaining  regulatory
approvals and manufacturing and  commercializing  any resulting drugs. Under the
Grunenthal   Agreement,   Grunenthal  is  responsible  for  conducting   certain
preclinical  testing and clinical trials of compounds  developed through the use
of the Company's technology.  The Company has no involvement in the research and
development  activities  of Glaxo under the Glaxo  Agreement.  As a result,  the
Company's  receipt  of  revenues  (whether  in  the  form  of  drug  development
milestones,  royalties  on sales or net  sales  proceeds)  in  respect  of drugs
resulting from its  collaborative  and licensing  arrangements is dependent upon
the  activities  of its  collaborative  partners and  licensees.  The amount and
timing of resources dedicated by the Company's  collaborative  partners to their
respective  collaborations with the Company and by the Company's licensee to the
development  of drugs that would be subject to royalties  payable to the Company
are not within the Company's control.  Moreover,  there can be no assurance that
the  interests  of the  Company  will  continue  to  coincide  with those of its
collaborative  partners or licensee,  that some of the  Company's  collaborative
partners or the Company's licensee will not develop  independently or with third
parties  drugs  that  could  compete  with  drugs of the types  covered by their
arrangements with the Company,  or that  disagreements over rights or technology
or other proprietary interests will not occur.

         If  any of  the  Company's  collaborative  partners  or  the  Company's
licensee  breaches its agreement with the Company,  or fails to devote  adequate
resources  to or  conduct  in a timely  manner  its  collaborative  or  licensed
activities,  the research programs under the applicable  Collaborative Agreement
or the development  and  commercialization  of drug  candidates  subject to such
arrangement could be materially  adversely  affected.  There can be no assurance
that the Company's  collaborative or licensing  arrangements will be successful.
Further,  there can be no assurance  that the Company will be able to enter into
acceptable  collaborative or licensing  arrangements  with other  pharmaceutical
companies in the future,  or that,  if  negotiated,  such  arrangements  will be
successful.


History of Operating Losses and Accumulated Deficit

         The  Company  has  incurred  significant  operating  losses  since  its
inception  in January  1987.  At December 31, 1997,  the  Company's  accumulated
deficit was $29,316,000. Losses have resulted principally from costs incurred in
connection  with the  Company's  research and  development  activities  and from
general and administrative costs associated with the Company's  operations.  The
Company expects to continue to incur substantial  operating losses at least over
the next several years and expects losses to increase as the Company's  research
and  development  efforts  expand  and its  current  collaborative  arrangements
expire. As of December 31,

                                       38

<PAGE>



1997,  the only  revenues  generated by the Company had resulted  from  payments
under the Collaborative Agreements, and government grants under the SBIR program
of the National  Institutes  of Health.  The  Company's  revenues,  expenses and
losses may fluctuate from quarter to quarter and year to year. Research payments
under the Lilly Agreement,  the Merck Agreement and the Novartis  Agreements are
scheduled  to  expire  in  December   1998,   November  1998  and  August  1998,
respectively, unless the research programs under such agreements are extended by
mutual agreement of the Company and Lilly,  Merck or Novartis.  The Company does
not expect to achieve  revenues or royalties from sales of drugs for a number of
years,  if at all. The Company will not achieve  revenues or royalties from drug
sales unless it or one of its collaborative  partners or licensees  successfully
completes  clinical trials with respect to a drug candidate,  obtains regulatory
approvals for that drug candidate and commercializes the resulting drug. Failure
to  achieve  significant  revenue  or  profitable  operations  could  impair the
Company's  ability to sustain  operations and there can be no assurance that the
Company will ever achieve significant revenues or profitable operations.


Future Capital Needs; Uncertainty of Additional Funding

         The operation of the Company's  business requires  substantial  capital
resources  and such  requirements  are likely to  increase  in the  future.  The
Company's future financial  requirements will depend on many factors,  including
the continued progress of its research and development programs,  the timing and
results  of  preclinical  testing  and  clinical  trials,  if any,  of its  drug
candidates,  the timing of regulatory approvals, if any, technological advances,
determinations  as to the  commercial  potential  of  its  or its  collaborative
partners'  proposed  products  and  the  status  of  competitive  products.  The
Company's  capital  requirements  will also depend on the  Company's  ability to
establish and maintain  collaborative  arrangements  with others and whether its
future  collaborative  partners  provide research funding to the Company and are
responsible for all development  activities,  preclinical testing and regulatory
approvals and, if such approvals are obtained,  the  manufacturing and marketing
of products. In addition,  such capital requirements will depend on the time and
expense  associated  with filing and, if  necessary,  prosecuting  and enforcing
patent claims.

         The Company  entered into the  Grunenthal  Agreement  in January  1998.
Under this agreement,  the Company will retain certain  ownership  rights to any
products that result from the  collaboration.  In addition,  the Company will be
significantly involved in the development of any such potential products but may
also be required to  contribute  substantial  financial  resources  towards such
development.  Accordingly,  the cost to the Company of this  arrangement  may be
significantly  greater than the cost to it of  participating  in a royalty-based
collaboration.  The Company  intends to explore the possibility of entering into
additional  collaborative  arrangements  similar in nature to its  collaboration
with Grunenthal.

         No assurance can be given that the Company's  existing cash on hand and
marketable  securities  and  funds  it  will  receive  under  the  Collaborative
Agreements and under the Glaxo  Agreement and government  grants,  together with
interest  income,  will be sufficient.  The Company expects that it will, in the
future,  seek to raise  additional  funding from other sources,  including other
collaborative partners and licensees,  and through public or private financings,
including  sales  of  equity  or debt  securities.  Any  such  collaborative  or
licensing  arrangement  could result in limitations on the Company's  ability to
control   the   research   and   development   of   potential   drugs   and  the
commercialization  of resulting drugs, if any, as well as its profits therefrom.
Any such  equity  financing  could  result in  dilution  to the  Company's  then
existing  stockholders.  There can be no assurance that additional funds will be
available on favorable terms or at all, or that such funds, if raised,  would be
sufficient  to permit the  Company to continue  to conduct  its  operations.  If
adequate  funds are not  available,  the  Company  may be  required  to  curtail
significantly  or  eliminate  one or more  of its  receptor  or  drug  discovery
programs.


                                       39

<PAGE>



Uncertainties Related to Clinical Trials

         Before obtaining required regulatory  approvals for the commercial sale
of  each  product  under  development,  the  Company  or its  collaborators  and
licensees must demonstrate  through preclinical studies and clinical trials that
such product is safe and efficacious for use. The results of preclinical studies
and initial clinical trials are not necessarily  predictive of results that will
be obtained from large-scale clinical trials, and there can be no assurance that
clinical trials of any product under development will demonstrate the safety and
efficacy of such product or will result in a marketable product.  The safety and
efficacy  of a  therapeutic  product  under  development  by the  Company or its
collaborative  partners and licensees  must be supported by extensive  data from
clinical  trials.  A number of companies have suffered  significant  setbacks in
advanced  clinical  trials,  despite  promising  results in earlier trials.  The
failure to demonstrate  adequately the safety and efficacy of a therapeutic drug
under development would delay or prevent regulatory  approval of the product and
could have a material  adverse  effect on the Company.  In addition,  the FDA or
other Regulatory  Agency may require  additional  clinical  trials,  which could
result in increased costs and significant development delays.

         The rate of  completion  of  clinical  trials of the  Company's  or its
collaborative  partners' and licensees'  products is dependent upon, among other
factors,  obtaining  adequate clinical supplies and the rate of patient accrual.
Patient accrual is a function of many factors, including the size of the patient
population,  the  proximity  of patients to clinical  sites and the  eligibility
criteria for the trial.  Delays in planned patient enrollment in clinical trials
may  result in  increased  costs,  program  delays or both,  which  could have a
material adverse effect on the Company. In addition, the Company's collaborative
partners  and  licensees  generally  have the right to control the  planning and
execution  of product  development  and clinical  programs,  and there can be no
assurance  that such  partners  and  licensees  will  conduct  such  programs in
accordance with schedules that are satisfactory to the Company.  There can be no
assurance  that,  if  clinical   trials  are  completed,   the  Company  or  its
collaborative  partners  and  licensees  will  submit  NDAs with  respect to any
potential products or that any such application will be reviewed and approved by
the FDA in a timely manner, if at all.


Lack of Manufacturing Experience; Reliance on Contract Manufacturers

         The Company currently has no manufacturing facilities and relies on its
collaborative  partners  or other  manufacturers  to produce its  compounds  for
research and development,  preclinical and clinical purposes. The products under
development  by the  Company  and its  collaborative  partners  have  never been
manufactured  on a  commercial  scale and there  can be no  assurance  that such
products can be manufactured  at a cost or in quantities  necessary to make them
commercially  viable.  If the Company  were unable to contract  for a sufficient
supply of its compounds on acceptable terms, or if it should encounter delays or
difficulties in its relationships with manufacturers,  the Company's preclinical
and  clinical  testing  schedule  would be  delayed,  resulting  in delay in the
submission of products for regulatory  approval or the market  introduction  and
subsequent sales of such products, which could have a material adverse effect on
the  Company.  Moreover,  manufacturers  that the Company may use must adhere to
current GMP  regulations  enforced by the FDA through its facilities  inspection
program.  If these facilities cannot pass a pre-approval  plant inspection,  the
FDA pre-market approval of the products will not be granted.




                                       40

<PAGE>



Lack of Sales and Marketing Capability

         The creation of infrastructure to commercialize pharmaceutical products
is a difficult,  expensive and time-consuming process. Synaptic currently has no
sales or marketing  capability.  To market  directly any product it may develop,
the Company  will need to establish a marketing  and sales force with  technical
expertise and  distribution  capability  or contract  with other  pharmaceutical
and/or health care companies with distribution  systems and direct sales forces.
There can be no assurance  that the Company will be able to establish  direct or
indirect sales and distribution  capabilities or be successful in gaining market
acceptance  for licensing  arrangements.  To the extent that the Company  enters
into  co-promotion  or  licensing  arrangements,  any  revenues  received by the
Company will be dependent on the efforts of third  parties,  and there can be no
assurance that any such efforts will be successful.


Dependence on Key Personnel

         The Company is highly dependent on its management and scientific staff.
Loss of the services of any key  individual  could have an adverse effect on the
Company.  The Company believes that its future success will depend,  in part, on
its ability to attract and retain  highly  talented  managerial  and  scientific
personnel  and  consultants.  The Company  faces  intense  competition  for such
personnel from, among others,  biotechnology and  pharmaceutical  companies,  as
well as academic and other research institutions. There can be no assurance that
it will be able to attract and retain the  personnel  it requires on  acceptable
terms.



                                       41

<PAGE>











                      (This page intentionally left blank.)



                                       42

<PAGE>



Item 8.       Financial Statements



                       SYNAPTIC PHARMACEUTICAL CORPORATION

                          INDEX TO FINANCIAL STATEMENTS





                                                                           Page
                                                                           ----
Report of Independent Auditors..............................................44

Balance Sheets at December 31, 1997 and 1996................................45

Statements of Operations for the years ended December 31, 1997, 1996
 and 1995.................................................................. 46

Statements of Stockholders' Equity (Deficiency) for the years
  ended December 31, 1997, 1996 and 1995....................................47

Statements of Cash Flows for the years ended December 31,
  1997, 1996 and 1995.......................................................49

Notes to Financial Statements...............................................50

                                       43

<PAGE>









                         REPORT OF INDEPENDENT AUDITORS




The Board of Directors and Shareholders
SYNAPTIC PHARMACEUTICAL CORPORATION

         We  have   audited  the   accompanying   balance   sheets  of  Synaptic
Pharmaceutical  Corporation  as of December  31, 1997 and 1996,  and the related
statements of operations,  stockholders'  equity (deficiency) and cash flows for
each of the three years in the period ended December 31, 1997.  These  financial
statements   are  the   responsibility   of  the   Company's   management.   Our
responsibility  is to express an opinion on these financial  statements based on
our audits.

         We conducted our audits in accordance with generally  accepted auditing
standards.  Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement.  An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements.  An audit also includes
assessing the  accounting  principles  used and  significant  estimates  made by
management,  as well as evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for our opinion.

         In our opinion,  the  financial  statements  referred to above  present
fairly,  in  all  material   respects,   the  financial   position  of  Synaptic
Pharmaceutical Corporation at December 31, 1997 and 1996, and the results of its
operations  and its cash flows for each of the three  years in the period  ended
December 31, 1997 in conformity with generally accepted accounting principles.



                                                  ERNST & YOUNG LLP


Hackensack, New Jersey
January 30, 1998, except for
 the second paragraph of Note 11
 as to which the date is March 2, 1998


                                       44

<PAGE>
                       SYNAPTIC PHARMACEUTICAL CORPORATION

                                 BALANCE SHEETS

(in thousands, except share information)

December 31, 1997 and 1996

Assets
                                                          1997            1996
                                                        --------        --------
Current assets:
    Cash and cash equivalents                           $23,113         $ 4,589
    Restricted cash                                         600              --
    Marketable securities--current maturities            10,010          21,418
    Revenue receivable under license agreement               40             192
    Restricted securities                                    --             712
    Other current assets                                    674             458
                                                        --------        --------
        Total current assets                             34,437          27,369

Property and equipment, net                               4,682           2,664
Marketable securities                                    28,977           8,677
Patent and patent application costs, net of
 accumulated amortization (1997--$1,069; 1996--$730)      1,306           1,645
                                                        --------        --------
                                                        $69,402         $40,355
                                                        ========        ========

Liabilities and Stockholders' Equity

 Current liabilities:
    Accounts payable                                    $   811         $   639
    Accrued liabilities                                     547             189
    Accrued compensation                                    340             380
    Current portion of capital lease obligations             --             107
                                                        --------        --------
        Total current liabilities                         1,698           1,315

Commitments and contingencies
Stockholders' equity:
    Preferred Stock, $.01 par value; authorized--
     1,000,000 shares                                        --              --
    Common Stock, $.01 par value; authorized--
     25,000,000 shares; issued and outstanding--
     10,526,585 shares in 1997 and 7,633,543 
     shares in 1996                                         105              76
    Additional paid-in capital                           97,049          63,231
    Net unrealized gains (losses) on securities              26              (1)
    Deferred compensation                                  (160)           (296)
    Accumulated deficit                                 (29,316)        (23,970)
                                                        --------        --------
        Total stockholders' equity                       67,704          39,040
                                                        --------        --------
                                                        $69,402         $40,355
                                                        ========        ========



                       See notes to financial statements.


                                       45


<PAGE>

                       SYNAPTIC PHARMACEUTICAL CORPORATION

                            STATEMENTS OF OPERATIONS

(in thousands, except share and per share information)


For the Years Ended December 31, 1997, 1996 and 1995


                                          1997        1996       1995
                                         --------   --------   --------

Revenues:
    Contract revenue                     $ 9,785    $ 6,943    $ 7,670
    License revenue                           --      2,000         --
    Grant revenue                            522        538        307
                                         -------    -------    -------
        Total revenues                    10,307      9,481      7,977

Expenses:
    Research and development              13,781     11,337      9,863
    General and administrative             4,072      2,982      2,215
                                         -------    -------    -------
        Total expenses                    17,853     14,319     12,078
                                         -------    -------    -------
Loss from operations                      (7,546)    (4,838)    (4,101)

Other income, net:
    Interest income                        2,205      2,013        748
    Interest expense                          (5)       (20)       (33)
    Gain on sale of securities                --        212         19
                                         -------    -------    -------
Other income, net                          2,200      2,205        734
                                         -------    -------    -------
Net loss                                 $(5,346)   $(2,633)   $(3,367)
                                         =======    =======    =======

Basic and diluted net loss per share     $ (0.66)   $ (0.35)   $ (4.76)
                                         =======    =======    =======
Shares used in computation of
 net loss per share                    8,129,260  7,577,610    707,094
                                       =========  =========    =======




                       See notes to financial statements.

                                       46
  
<PAGE>

                       SYNAPTIC PHARMACEUTICAL CORPORATION

                 STATEMENTS OF STOCKHOLDERS' EQUITY (DEFICIENCY)

(in thousands, except share information)

<TABLE>

<S>                            <C>        <C>     <C>          <C>        <C>       <C>        <C>            <C>      <C> 

                                                                  Net
                                                               Unrealized              Notes                             Total
                                                                 Gains              Receivable                           Stock-    
                                                    Additional  (Losses)   Deferred   From         Accumu-               holders'
                                   Common Stock      Paid-In      on        Compen-   Stock-        lated     Treasury    Equity
                                 Shares   Amount     Capital   Securities    sation   holders      Deficit     Stock   (Deficiency)
                                 ------   ------     -------   ----------    ------   -------      -------     -----   ------------
Balance at January 1, 1995     340,193     $  3     $    661      $(171)     $(103)     $(11)     $(17,970)     $(1)     $(17,592)
Purchase of 1,893 shares of
 treasury stock at cost             --       --           --         --         --        --            --       (3)           (3)
Payments received on notes
 receivable from stockholders       --       --           --         --         --         5            --       --             5
Deferred compensation related
 to stock incentive plan            --       --          191         --       (191)       --            --       --            --
Forfeiture of deferred
 compensation related to
 stock incentive plan               --       --          (1)         --          1        --            --       --            --
Amortization of deferred
 compensation                       --       --          --          --         85        --            --       --            85
Issuance of 1,646 shares
 of treasury stock                  --       --           1          --         --        --            --        2             3
Issuance of 57,769 shares of
 common stock to employees
 and consultants                  57,769      1         258          --         --        --            --       --           259
Issuance of 2,000,000 shares
 of common stock in initial
 public offering               2,000,000     20      22,692          --         --        --            --       --        22,712
Conversion of preferred stock  4,928,382     49      36,150          --         --        --            --       --        36,199
Adjustment to reflect net
 unrealized holding gain on
 securities                           --     --          --         367         --        --            --       --           367
Net loss for the year ended
 December 31, 1995                    --     --          --          --         --        --        (3,367)      --        (3,367)
Fractional shares issued in
 reverse stock split                  24     --          --          --         --        --            --       --            --
                                  ------  ------     -------   ----------    ------   -------      -------     -----    -----------
Balance at December 31, 1995   7,326,368     73      59,952         196       (208)      (6)       (21,337)      (2)       38,668
Purchase of 1,190 shares of
 treasury stock at cost               --     --          --          --         --       --             --       (1)           (1)
Payments received on notes
 receivable from stockholders         --     --          --          --         --        6             --       --             6
Deferred compensation related
 to stock incentive plan              --     --         388          --       (388)      --             --       --            --
Forfeiture of deferred
 compensation related to
 stock incentive plan                 --     --        (121)         --        121       --             --       --            --
Amortization of deferred
 compensation                         --     --          --          --        179       --             --       --           179
Issuance of 48,126, shares
 of common stock pursuant
 to exercise of stock options     46,061      1          81          --         --       --             --        3            85
Issuance of 48,114 shares of
 common stock pursuant to
 exercise of stock warants        48,114     --         457          --         --       --             --       --           457
Issuance of 213,000 shares
 of common stock pursuant to
 overallotment option            213,000      2       2,474          --         --       --             --       --          2,476
Adjustment to reflect net
 unrealized holding loss on
 securities                           --     --          --        (197)        --       --             --       --          (197)
Net loss for the year ended
 December 31, 1996                    --     --          --          --         --       --         (2,633)      --        (2,633)
                               ---------  -------   --------  ----------  ---------  -------   ------------    -----  ------------
Balance at December 31, 1996   7,633,543  $  76     $63,231   $      (1) $    (296)  $   --     $  (23,970)   $  --   $    39,040
                               =========  =======   ========  ==========  =========  =======   ============    =====  ============
</TABLE>
                       See notes to financial statements.

                                       47

<PAGE>

                       SYNAPTIC PHARMACEUTICAL CORPORATION

         STATEMENTS OF STOCKHOLDERS' EQUITY (DEFICIENCY) -- (Continued)

(in thousands, except share information)

<TABLE>

<S>                            <C>        <C>     <C>          <C>        <C>       <C>        <C>            <C>      <C> 

                                                                  Net
                                                               Unrealized              Notes                             Total
                                                                 Gains              Receivable                           Stock-    
                                                    Additional  (Losses)   Deferred   From         Accumu-               holders'
                                   Common Stock      Paid-In      on        Compen-   Stock-        lated     Treasury    Equity
                                 Shares   Amount     Capital   Securities    sation   holders      Deficit     Stock   (Deficiency)
                                 ------   ------     -------   ----------    ------   -------      -------     -----   ------------
Balance at December 31, 1996  7,633,543  $  76      $63,231       $  (1)   $  (296)  $   --     $  (23,970)   $  --   $    39,040
Purchase of 438 shares of
 Treasury Stock at cost              --     --           --          --         --       --             --       (1)           (1)
Forfeiture of Deferred        
 Compensation related to      
 Stock Incentive Plan                --     --          (12)         --         12       --             --       --            --
Amortization of Deferred      
 Compensation                        --     --           --          --        124       --             --       --           124
Issuance of 18,480, shares    
 of common stock pursuant        18,042      1           36          --         --       --             --        1            38
 to exercise of stock options 
Issuance of 2,875,000 share
 of common stock in public
 offering                     2,875,000     28       33,794          --         --       --             --       --        33,822
Adjustment to reflect net
 unrealized holding loss on
 securities                          --     --          --          27          --       --             --       --            27
Net loss for the year ended
 December 31, 1997                   --     --          --          --          --       --         (5,346)      --        (5,346)
                             ----------  -------   --------  ----------  ---------  -------   ------------    -----  ------------
Balance at December 31, 1997 10,526,585  $  105    $ 97,049  $      26   $   (160)  $   --     $   (29,316)   $  --  $     67,704
                             ==========  =======   ========  ==========  =========  =======   =============   =====  ============


</TABLE>

                       See notes to financial statements.

                                       48
<PAGE>



                       SYNAPTIC PHARMACEUTICAL CORPORATION

                            STATEMENTS OF CASH FLOWS

(in thousands)


For the Years Ended December 31, 1997, 1996 and 1995

                                                    1997      1996        1995
                                                 --------   --------    -------
Operating activities:                           
Net loss                                          $(5,346)   $(2,633)   $(3,367)
Adjustments to reconcile net loss
    to net cash (used in)
    provided by operating activities:
    Depreciation and patent amortization            1,209        960        792
    Amortization of (discounts)/premiums
    on securities                                    (123)      (158)        42
    Amortization of deferred compensation             124        179         86
    Gain on sale of securities                         --       (212)       (19)
Changes in operating assets and liabilities:
       (Increase) decrease in other assets           (816)      (107)       356
       Increase in accounts payable,
       accrued liabilities
          and accrued compensation                    490         44        131
       Decrease (increase) in license
       agreement revenue receivable                   152        (62)     1,904
       (Decrease) increase in deferred revenue         --       (821)       821
                                                 --------   --------     ------
    Net cash (used in) provided
     by operating activities                       (4,310)    (2,810)       746

Investing activities:
    Proceeds from sale or maturity of
    investments                                    27,666     10,710      6,318
    Purchases of investments                      (35,696)   (32,238)    (3,669)
    Purchases of property and equipment            (2,888)    (1,106)      (529)
    Increase in patent and patent
    application costs                                  --       (518)      (602)
    Principal payments made by
    employee/stockholders                              --         --          1
                                                 --------   --------    -------
Net cash (used in) provided
 by investing activities                          (10,918)   (23,152)     1,519

Financing activities:
    Issuance of common stock, net of
    repurchases                                    33,859      3,016     22,971
    Payments on capital lease                        (107)      (152)      (125)
    Payments on notes receivable from
    stockholders                                       --          6          6
                                                 --------   --------    -------
Net cash provided by financing activities          33,752      2,870     22,852
                                                 --------   --------    -------
Net increase (decrease) in cash and
 cash equivalents                                  18,524    (23,092)    25,117
Cash and cash equivalents at
 beginning of period                                4,589     27,681      2,564
                                                 --------   --------    -------
Cash and cash equivalents at end of period        $23,113    $ 4,589    $27,681
                                                 ========   ========    =======
Supplemental cash flow disclosure:
    Cash paid for interest                        $     5    $    20     $   33
                                                 ========   ========    =======



                       See notes to financial statements.



                                       49

<PAGE>


                       SYNAPTIC PHARMACEUTICAL CORPORATION
                          NOTES TO FINANCIAL STATEMENTS
                                December 31, 1997


Note 1 -- Summary of Significant Accounting Policies

        Organization.  Synaptic  Pharmaceutical  Corporation  (the "Company") is
engaged in the development of a broad platform of enabling  technology  which it
calls "human receptor-targeted drug design technology". The Company is utilizing
this  technology  both to  discover  and  clone  the  genes  that code for human
receptor  subtypes  associated with specific  disorders and to design  compounds
that can  potentially  be developed as drugs for treating these  disorders.  The
Company makes available this technology to its  pharmaceutical  partners through
licensing and research  agreements  from which the Company derives the principal
portion of its revenue.

        Basic and  Diluted  Net Loss Per Share.  Net loss per share is  computed
using the  weighted  average  number of shares of common stock  outstanding.  In
1997,  the  Financial  Accounting  Standards  Board  issued  Statement  No. 128,
"Earnings per Share."  Statement No. 128 replaced the calculation of primary and
fully  diluted  earnings  per share with basic and diluted  earnings  per share.
Since the Company has a history of  operating  losses,  the  adoption of the new
standard had no effect on the current and prior year net loss per share amounts.
Also, as a result of the Company's operating losses and the anti-dilutive effect
from  stock  options  and  warrants,  such  instruments  are  excluded  from the
computation of basic and diluted net loss per share.

        Revenue Recognition. Research funding revenue is recognized ratably over
the period of the  contract  to which it relates.  Payments  received in advance
under such  contracts  is  recorded as deferred  revenue  until the  research is
performed.  Research  milestone  payment  revenue is  recognized at the time the
related   research   milestone   is   achieved.   License   revenue   represents
non-refundable  payments  for  licenses  to the  Company's  technology  and drug
discovery systems.  Non-refundable  payments for licenses are recognized at such
time as they are received or, if earlier,  become  guaranteed.  Government grant
receipts are recorded as revenue in the period in which the related  research is
performed.

        Cash Equivalents.  Cash equivalents consist of highly liquid investments
with a  maturity  of three  months  or less  when  purchased.  Included  in cash
equivalents  at December  31,  1997,  is  approximately  $23,109,000  related to
investments  in money market funds.  At December 31, 1996,  this amount  totaled
$4,383,000.

        Available-for-Sale Securities. Available-for-sale securities are carried
at fair  value,  with the  unrealized  gains and losses  reported  as a separate
component of stockholders'  equity.  The cost of debt securities is adjusted for
amortization   of  premiums  and  accretion  of  discounts  to  maturity.   Such
amortization  is  included  in interest  income.  Realized  gains and losses and
declines in value  judged to be other than  temporary,  if any,  are included in
other  income.   The  cost  of   securities   sold  is  based  on  the  specific
identification  method.  Investments  held  as  of  December  31,  1997  consist
primarily of U.S. Government and Federal Agency obligations, U.S. corporate debt
securities and mortgage-backed securities. The maturities range from January 31,
1998, through November 26, 2001.

        The  Company has  established  guidelines  relative to  diversification,
credit ratings and maturities to maintain  safety and liquidity.  The guidelines
are periodically reviewed and modified to take advantage of trends in yields and
interest rates.

        Property and Equipment.  Property and equipment are stated at cost.
Depreciation is computed using the straight-line method over the estimated
useful lives of the assets. Scientific equipment, office equipment and

                                       50

<PAGE>


                       SYNAPTIC PHARMACEUTICAL CORPORATION
                   NOTES TO FINANCIAL STATEMENTS--(Continued)
                                December 31, 1997


furniture  and  fixtures  are  depreciated  over a life  of 7  years.  Leasehold
improvements  are depreciated  principally  over the life of the facility lease,
which is currently 18 years (see Note 9). Software is depreciated over a life of
3 years.  Assets acquired under capital lease arrangements were depreciated over
the life of the related leases.

        Patents.  Prior to October 1, 1996, patent and patent  application costs
were capitalized and amortized over 7 years or the estimated life of the patent,
if less, using the  straight-line  method.  Capitalized costs through October 1,
1996  will  continue  to be  amortized  over  the  remaining  portions  of their
seven-year lives. Effective October 1, 1996, patent and patent application costs
are  expensed  as  incurred.  The  effect in 1996 of this  change in  accounting
estimate was to increase expenses and net loss by $171,000,  or $0.02 per share.
The  Company   continually   reviews   capitalized   costs  to  assess   ongoing
recoverability.

        Accrued Liabilities. Included in accrued liabilities at December 31,1997
and  1996  are  accrued   professional   fees  totaling  $345,000  and  $68,000,
respectively.

        Stock-Based Compensation.   The Company has elected to follow Accounting
Principles  Board  Opinion No. 25,  "Accounting  for Stock Issued to  Employees"
("APB No. 25"), in accounting for its employee stock options.  Under APB No. 25,
compensation  expense is recognized  only when the exercise  price of options is
below  the  market  price of the  underlying  stock on the date of  grant.  Such
expense is recognized ratably over the vesting period.

        Use of Estimates.  The preparation of financial statements in conformity
with  generally  accepted  accounting  principles  requires  management  to make
estimates  and  assumptions  that  affect  the  reported  amounts  of assets and
liabilities  and disclosure of contingent  assets and liabilities at the date of
the financial statements. Estimates also affect the reported amounts of revenues
and expenses during the reporting period. Actual results could differ from these
estimates.

        New  Accounting  Standard.   In  June  1997,  the  Financial  Accounting
Standards  Board issued  Statement of Financial  Accounting  Standards  No. 130,
"Reporting  Comprehensive  Income." This pronouncement,  which is required to be
adopted effective  January 1, 1998,  requires the presentation of a statement of
comprehensive income. Comprehensive income is defined as the change in equity of
a business  enterprise  during a period  resulting from  transactions  and other
events and  circumstances  from nonowner sources.  Comprehensive  income for the
Company,  in addition to net loss, will include  unrealized  gains and losses on
marketable securities held for sale, currently recorded in stockholders' equity.

        Reclassifications.  Certain prior year amounts have been reclassified to
conform with the current year presentation.




                                       51

<PAGE>


                       SYNAPTIC PHARMACEUTICAL CORPORATION
                   NOTES TO FINANCIAL STATEMENTS--(Continued)
                                December 31, 1997


Note 2 -- Investments

        The  following is a summary of all of the Company's  securities.  All of
the  Company's  securities  are  classified  as  available-for-sale  securities.
Determination of estimated fair value is based on quoted market prices:


                                                Gross      Gross
                                              Unrealized Unrealized    Estimated
                                     Cost       Gains     (Losses)    Fair Value
                                     ----       -----     --------    ----------
December 31, 1997:
U.S. Treasury obligations and
obligations of U.S. government
agencies                         $21,299,000   $    --   $(22,000)   $21,277,000
U.S. corporate debt securities    15,966,000    57,000    (11,000)    16,012,000
Mortgage-backed securities         1,696,000     2,000         --      1,698,000
                                 -----------   -------   --------    -----------
                                 $38,961,000   $59,000   $(33,000)   $38,987,000
                                 ===========   =======   ========    ===========

December 31, 1996:
U.S. Treasury obligations and
obligations of U.S. government
agencies                         $20,846,000   $ 1,000   $ (4,000)   $20,843,000
U.S. corporate debt securities     6,991,000     5,000     (8,000)     6,988,000
Mortgage-backed securities         2,971,000     5,000         --      2,976,000
                                 -----------   -------   --------    -----------
                                 $30,808,000   $11,000   $(12,000)   $30,807,000
                                 ===========   =======   ========    ===========


        The gross  realized gains on sale of  available-for-sale  securities for
the years  ending  December 31,  1997,  1996 and 1995  totaled $0,  $212,000 and
$24,000,  respectively, and the gross realized losses totaled $0, $0 and $6,000,
respectively.   The   net   adjustment   to   unrealized   gains   (losses)   on
available-for-sale  securities included as a separate component of stockholders'
equity totaled $27,000 in 1997, $(197,000) in 1996 and $367,000 in 1995.

                                       52

<PAGE>


                       SYNAPTIC PHARMACEUTICAL CORPORATION
                   NOTES TO FINANCIAL STATEMENTS--(Continued)
                                December 31, 1997


Note 3 -- Collaborative Research Agreements

        At December 31,  1997,  the Company was engaged in  collaborations  with
four  pharmaceutical  companies,  three of which account for all of its contract
and license revenues.  In addition,  the Company has licensed certain technology
to The DuPont Merck  Pharmaceutical  Company.  Details of these arrangements are
set forth below:

        Eli Lilly and Company.  In January  1991,  the Company and Eli Lilly and
Company  ("Lilly")  entered  into an  agreement  to promote  the  discovery  and
development of serotonin receptor  subtype-selective  drugs for the treatment of
serotonin-related  disorders.  The original term of the  collaboration  was four
years, but was extended in January 1995 for an additional  four-year  period. In
October  1996,  the size of the  collaboration  was  increased.  As part of this
agreement,  Lilly is  providing  funding to the  Company to support a  specified
number  of  the  Company's  scientists  who  conduct  research  as  part  of the
collaboration.

        Revenue  recognized  in the  accompanying  financial  statements  is not
subject to  repayment.  Lilly  will also  provide  the  Company  with  milestone
payments and royalties on sales of any products resulting from the collaboration
for a period of time based upon the term of the related patents.

        During  1997,  1996  and  1995,  the  Company   recognized   $4,748,000,
$2,011,000, and $1,960,000, respectively, in revenue under this agreement.

        Merck & Co.,  Inc. In November  1993,  the Company and Merck & Co., Inc.
("Merck") entered into an agreement pursuant to which they agreed to collaborate
in the identification and development of alpha-1a  antagonists,  principally for
the treatment of BPH. The initial term of the  collaboration was three years. In
October  1996,  the term of the  collaboration  was extended  for an  additional
one-year  period  and in  November  1997,  the term was  again  extended  for an
additional one-year period. Under the terms of the agreement, Merck is providing
funding to the Company to support a specified number of the Company's scientists
who  conduct  research  as part of the  collaboration.  In  addition,  Merck  is
required  to  pay  royalties  on  sales  of  any  products  resulting  from  the
collaboration  and is required to make payments upon the  achievement of certain
milestones.

        As part of the  collaboration,  Merck  received an  exclusive  worldwide
license to use the Company's  alpha  adrenergic  drug discovery  systems for the
development  and  commercialization  of  alpha-1a  antagonists,  as  well  as an
exclusive  worldwide  license under several of the Company's related patents and
patent applications.  The Company retained the right to use its alpha adrenergic
technology for the development of alpha adrenergic and other agents that are not
alpha-1a antagonists.

        Merck has the right to terminate the Merck Agreement at any time upon 90
days' prior written notice. In the event of any such termination, Merck will not
be required to provide the Company with any  research  funding that has not come
due prior to such termination or make certain other payments to the Company that
have not come due prior to such termination.

        During  1997,  1996  and  1995,  the  Company   recognized   $1,631,000,
$3,613,000 and $1,477,000, respectively, in revenue under this agreement.


                                       53

<PAGE>


                       SYNAPTIC PHARMACEUTICAL CORPORATION
                   NOTES TO FINANCIAL STATEMENTS--(Continued)
                                December 31, 1997


        At December 31, 1997 and 1996, the Company had a receivable amounting to
approximately  $40,000 and  $192,000,  respectively,  for  certain  reimbursable
expenditures.

        Novartis  Pharma  AG  (a  subsidiary  of  the  successor-in-interest  of
Ciba-Geigy  Limited).  In  August  1994,  the  Company  and  Ciba-Geigy  Limited
("Ciba-Geigy")  entered  into an  agreement  pursuant  to which  they  agreed to
collaborate in the  identification  and  development of neuropeptide Y drugs for
the  treatment  of  obesity  and  eating  disorders,  as well as  cardiovascular
disorders.  In May  1996,  the  Company  and  Ciba-Geigy  entered  into a second
agreement and an amendment to the first agreement  pursuant to which the term of
the  collaboration  was extended by one year and the scope of the  collaboration
was  expanded to provide for  research on  additional  targets for the design of
drugs for the  treatment  of obesity and eating  disorders.  In  December  1996,
Ciba-Geigy and Sandoz Limited  consolidated to form a new company,  Novartis AG,
the  pharmaceutical  subsidiary  of which is  Novartis  Pharma AG  ("Novartis").
Novartis   assumed   Ciba-Geigy's   rights  and  obligations   relating  to  the
collaboration.  The term of the collaboration will expire on August 4, 1998, but
may be further  extended  by mutual  agreement  of the  parties.  As part of the
agreements,  Novartis is providing funding to the Company to support a specified
number  of  the  Company's  scientists  who  conduct  research  as  part  of the
collaboration. In return for this research support, the Company granted Novartis
an exclusive worldwide license to use the Company's neuropeptide Y technology to
develop,  manufacture  and sell  compounds  that  work  through  neuropeptide  Y
receptor subtypes for the treatment of obesity and eating disorders. Novartis is
also  required to provide the Company with  milestone  payments and royalties on
sales of any products resulting from the collaboration.

        During August 1994,  Novartis made a $7,500,000 equity investment in the
Company.  During December 1995,  Novartis made an additional  $2,000,000  equity
investment in the Company.

        During  1997,  1996  and  1995,  the  Company   recognized   $3,406,000,
$3,319,000 and $4,234,000, respectively, in revenue under this agreement.

        Warner-Lambert  Company.  In July 1997,  the Company and  Warner-Lambert
Company ("Warner-  Lambert")  entered into a collaborative  research and license
agreement pursuant to which they agreed to collaborate in the identification and
development of galanin drugs for a variety of therapeutic applications.  As part
of the collaboration,  Warner-Lambert received an exclusive worldwide license to
use the  Company's  galanin  receptor  subtype  drug  discovery  systems for the
development and  commercialization  of galanin receptor subtype- selective drugs
for all  therapeutic  applications.  To date, the Company has not recognized any
revenue under this agreement.

        The DuPont Merck  Pharmaceutical  Company. In February 1996, the Company
and The DuPont Merck  Pharmaceutical  Company  ("DuPont  Merck") entered into an
agreement  pursuant to which the Company  granted  DuPont  Merck a  nonexclusive
license to use certain of the Company's alpha adrenergic drug discovery  systems
for the development of alpha  adrenergic  subtype-selective  drugs.  The license
granted to DuPont Merck expired on February 5, 1998.

                                       54

<PAGE>


                       SYNAPTIC PHARMACEUTICAL CORPORATION
                   NOTES TO FINANCIAL STATEMENTS--(Continued)
                                December 31, 1997


Note 4 -- Property and Equipment

        Property and equipment consists of the following as of December 31, 1997
and 1996:



                                                1997           1996

Scientific equipment                        $ 4,921,000   $ 2,960,000
Furniture and fixtures                          188,000       184,000
Office equipment                                454,000       433,000
Leasehold improvements                        1,557,000     1,225,000
Software                                        669,000        99,000
Equipment under capitalized leases              658,000       658,000
                                            -----------   -----------
                                              8,447,000     5,559,000
Accumulated depreciation and amortization    (3,765,000)   (2,895,000)
                                            -----------   -----------
                                            $ 4,682,000   $ 2,664,000
                                            ===========   ===========

Note 5 -- Capital Leases

        The Company and a bank were  parties to a master lease  agreement  under
which the Company leased laboratory and computer  equipment with a cost basis of
$658,000.  The effective  interest rate on the leases  approximated  10.5%.  The
assets were depreciated over the related lease terms.

        Under the terms of the master lease  agreement,  $112,000 in  securities
held in an investment account maintained by the bank was restricted as to use at
December 31, 1996.

        Accumulated amortization on leased equipment as of December 31, 1997 and
1996 was $658,000 and $623,000, respectively.

                                       55

<PAGE>


                       SYNAPTIC PHARMACEUTICAL CORPORATION
                   NOTES TO FINANCIAL STATEMENTS--(Continued)
                                December 31, 1997


Note 6 -- Stockholders' Equity

        Common Stock. In December 1995, the Company  completed an initial public
offering  of  2,000,000  shares  of its  common  stock.  In  January  1996,  the
underwriters  of the initial  public  offering  exercised  their  over-allotment
option to purchase an additional  213,000 shares of common stock. As part of the
initial public  offering,  the then existing  convertible  redeemable  preferred
stock automatically converted into 4,928,382 shares of common stock.

        In October 1997,  the Company  completed a public  offering of 2,500,000
shares of its common stock.  In November  1997, the  underwriters  of the public
offering exercised their over-allotment option to purchase an additional 375,000
shares of common stock.

        In connection with the sale of certain convertible  redeemable preferred
stock which was  converted  into common stock upon  completion  of the Company's
initial public offering,  the placement agents of certain convertible redeemable
preferred  stock received  warrants to purchase  192,458 shares of the Company's
common  stock at an exercise  price of $9.50 per share.  In May 1996,  48,114 of
these warrants were  exercised.  At December 31, 1997,  144,344 shares of common
stock were  reserved  for  issuance.  In January  1998,  137,648  warrants  were
exercised and the remaining warrants expired .

        Stockholders'  Rights Plan. In November  1995,  the  Company's  Board of
Directors  approved  the  adoption of a  stockholders'  rights plan (the "Rights
Plan").  The Rights Plan provides for the  distribution of one right (a "Right")
with respect to each share of outstanding  common stock and any new issuances of
common stock.  Upon  completion of the initial public offering in December 1995,
the Board of Directors designated Series A Junior Participating  Preferred Stock
and  declared a dividend of one Right with respect to each share of common stock
outstanding. Each Right will become exercisable to purchase from the Company, at
an  exercise  price  of  $160.00,  1/1000th  of  a  share  of  Series  A  Junior
Participating  Preferred Stock or that number of shares of common stock having a
market  value  equal to two times the  exercise  price of the Right.  The Rights
generally  become  exercisable for the Series A Junior  Participating  Preferred
Stock ten days following the announcement by any person or group of an intention
to make a tender offer or exchange offer,  the consummation of which would cause
any person or group to become the owner of 15% or more of the outstanding common
stock, and generally become  exercisable for common stock ten days following the
acquisition  by any person or group of more than 15% of the  outstanding  common
stock.  The Rights will expire in the year 2005.  The Rights Plan may discourage
certain types of transactions involving an actual or potential change in control
of the Company.

        Each  1/1000th  of a share of  Series A Junior  Participating  Preferred
Stock will have one vote. Each share of Series A Junior Participating  Preferred
Stock will be entitled to a preferential  quarterly  dividend per share equal to
the larger of (i) an amount equal to any  dividend  declared on the common stock
and (ii) $.00025.  Additionally, in the event of a liquidation, each 1/1000th of
a share of the Series A Junior  Participating  Preferred Stock would be entitled
to a preferential liquidation payment equal to $0.01 plus an amount equal to the
amount that would be distributed with respect to each share of common stock.

        Preferred  Stock.  The Company is  authorized  to issue up to  1,000,000
shares of preferred  stock,  200,000 of which is  designated  as Series A Junior
Participating  and 800,000 of which is  undesignated.  The Board of Directors is
authorized to provide for the issuance of preferred stock in one or more classes
or series and to fix

                                       56

<PAGE>


                       SYNAPTIC PHARMACEUTICAL CORPORATION
                   NOTES TO FINANCIAL STATEMENTS--(Continued)
                                December 31, 1997


the  number of shares  constituting  any such  class or  series,  and the voting
powers, designations, preferences and relative, participating, optional or other
special  rights  and  qualifications,   limitations  or  restrictions   thereof,
including the dividend rights,  dividend rate,  terms of redemption,  redemption
price or prices,  conversion  rights and  liquidation  preferences of the shares
constituting  any class or series,  without  any  further  vote or action by the
shareholders of the Company.


Note 7 -- Incentive/Stock Plans

        The  Company  currently  has  three  stock  incentive  plans:  the  1996
Incentive Plan (the "1996 Plan"),  the 1988 Amended and Restated  Incentive Plan
(the "1988 Plan" and,  together with the 1996 Plan, the  "Incentive  Plans") and
the 1996 Nonemployee Director Stock Option Plan (the "Director Plan").

        The  Company  has  elected  to follow APB No. 25 in  accounting  for its
employee stock options  because,  as discussed below, the alternative fair value
accounting provided for under Financial Accounting Standards Board Statement No.
123 "Accounting for Stock-Based  Compensation"  ("SFAS No. 123") requires use of
option  valuation  models that were not  developed  for use in valuing  employee
stock  options.  Under  APB No.  25,  compensation  expense  is  required  to be
recognized when the exercise price of the Company's employee stock options is at
a price below the market price of the underlying stock on the date of grant.

        Incentive Plans. The 1996 Plan and the 1988 Plan were adopted in October
1995 and June 1988, respectively. Under both plans, a committee of the Company's
Board  of  Directors  (the  "Committee")  approves  the sale of  shares  and the
granting of nonstatutory or incentive stock options. In addition, under the 1996
Plan,  the  committee  may grant  stock  appreciation  rights to  employees  and
consultants of the Company. The purchase price for shares and the exercise price
of options are  determined by the  Committee  (although,  the exercise  price of
incentive  stock options may be no less than the fair market value of the common
stock on the date of grant). The 1996 Plan replaced the 1988 Plan,  effective as
of January 1, 1996,  with respect to all future  stock and option  awards by the
Company to its employees and consultants.

        In  general,  options  granted  under the  Incentive  Plans  vest over a
four-year  period.  Unvested  options  are  forfeited  upon  termination  of the
employee or consulting  relationship.  Vested options, if not exercised within a
specified  period  of  time  following  the  termination  of the  employment  or
consulting relationship,  are also forfeited.  Options generally expire 10 years
from the date of grant.  Shares of common stock sold under the  Incentive  Plans
are also generally subject to vesting. Unvested shares of common stock which are
sold under the Incentive Plans may be repurchased by the Company, at its option,
at the original  sale price upon  termination  of the  employment  or consulting
relationship of the holder with the Company.  Options granted and shares sold to
employees  under the  Incentive  Plans  generally  become  fully vested upon the
occurrence  of a change in control of the  Company  (as  defined) if the holders
thereof are terminated in connection  with such change in control other than for
cause (as  defined).  The maximum  number of shares  subject to the 1996 Plan is
1,100,000.  At December 31, 1997,  245,812  shares  remain  available for future
awards  under the 1996 Plan.  As of December  31,  1997,  no stock  appreciation
rights had been awarded under the 1996 Plan.

        Director Plan.  The Director Plan was adopted by the Board of  Directors
in March 1996 and approved by the  stockholders in June 1996. In general,  under
the Director Plan, each nonemployee director of the Company

                                       57

<PAGE>


                       SYNAPTIC PHARMACEUTICAL CORPORATION
                   NOTES TO FINANCIAL STATEMENTS--(Continued)
                                December 31, 1997


is  automatically  granted an option on the date that he or she first  becomes a
member  of the  Board  of  Directors.  In  addition,  on  June 1 of  each  year,
commencing in 1997, each nonemployee director is granted an additional option to
purchase  2,500  shares of common  stock at an exercise  price equal to the fair
market value on the date of grant.  The maximum  number of shares subject to the
Director Plan is 250,000.  In general,  options  granted under the Director Plan
become  exercisable  as to 1/24th of the total  number of shares  subject to the
option for each calendar  month  elapsed after the date of the option grant.  In
the event of a change in control of the  Company  (as  defined)  or the death or
disability  of the  optionee,  any  unvested  portion of the options will become
exercisable  in full.  Options  granted under the Director Plan will expire upon
the earliest to occur of the following: (a) the expiration of ten years from the
date of grant of the  option,  (b) one year  after the  optionee  ceases to be a
director of the Company by reason of death or disability of the optionee, or (c)
three months after the date the optionee  ceases to be a director of the Company
for any reason other than death or disability.

        Option  activities  under the Incentive  Plans and the Director Plan are
detailed in the following table:

                                                                       Weighted
                                                                      Average
                                       1996      1988     Director  Option Price
                                       Plan      Plan       Plan     Per Share
                                    ---------  --------  ---------  -----------
Outstanding at January 1, 1995            --    327,345         --       $ 1.77
Granted                                   --     36,328         --       $ 2.00
Exercised                                 --    (11,125)        --       $ 1.76
Forfeited                                 --    (12,773)        --       $ 1.77
                                    ---------  --------  ---------  -----------
Outstanding at December 31, 1995          --    339,775         --       $ 1.79
Granted                              443,762         --     17,500       $13.24
Exercised                             (2,500)   (45,626)        --       $ 1.77
Forfeited                            (25,500)    (2,638)        --       $11.26
                                    ---------  --------  ---------  -----------
Outstanding at December 31, 1996     415,762    291,511     17,500       $ 8.55
Granted                              503,751         --     15,000       $12.99
Exercised                               (625)   (17,855)        --       $ 2.01
Forfeited                            (67,825)    (8,354)    (2,500)      $12.88
                                    ---------  --------  ---------  -----------
Outstanding at December 31, 1997     851,063    265,302     30,000       $10.47
                                    ========   ========  =========  ===========
Exercisable at December 31, 1997      71,511    221,212     15,000       $ 5.27
                                    ========   ========  =========  ===========
Exercisable at December 31, 1996       8,375    189,549      5,034       $ 2.72
                                    ========   ========  =========  ===========
Exercisable at December 31, 1995          --    184,125         --       $ 1.76
                                    ========   ========  =========  ===========

                                       58

<PAGE>

                       SYNAPTIC PHARMACEUTICAL CORPORATION
                   NOTES TO FINANCIAL STATEMENTS--(Continued)
                                December 31, 1997



        The  following  table  discloses at December  31, 1997,  for each of the
following  classes of options as  determined  by range of  exercise  price,  the
information  regarding  weighted-average  exercise  price  and  weighted-average
remaining contractual life of each said class:


                                           Weighted                    Weighted
                             Weighted       Average                     Average
                              Average      Remaining                   Exercise
                              Exercise    Contractual    Number Of      Price of
                 Number Of   Price of       Life Of       Options       Options
                  Options    Outstanding  Outstanding    Currently    Currently
 Option Class   Outstanding   Options       Options     Exercisable  Exercisable
 ------------   -----------   -------       -------     -----------  -----------
Prices ranging
 from
$1.76 - $2.00      280,302     $ 1.81     5.0 years       224,962        $ 1.79

Prices ranging
 from
$10.125 - $14.25   700,363     $12.53     9.5 years        29,486        $11.36

Prices ranging
 from              
$15.25 - $16.75    165,700     $16.44     8.4 years        53,275        $16.62


        The following  table discloses for each of the years ending December 31,
1997, 1996 and 1995, the number of options granted,  the  weighted-average  fair
values and the weighted-average  exercise prices for those options with exercise
prices that  equaled or were less than the market  price of the common  stock on
the date of grant.  There were no options  granted with an exercise  price above
the market price of the common stock on the date of grant.

<TABLE>

<S>             <C>           <C>       <C>            <C>           <C>         <C>            <C>          <C>        <C> 

 

                               1997                                     1996                                   1995
                -----------------------------------    --------------------------------------   ----------------------------------
                  Number                                  Number                                  Number
                    of          Fair     Exercise           of          Fair       Exercise         of          Fair     Exercise
                  Options      Value       Price         Options        Value       Price         Options      Value      Price
- --------------- -----------  ---------- -----------    ------------  ----------- ------------   -----------  ---------- ----------
Exercise
price equals
market price         518,751  $7.59     $12.99           433,262       $ 5.75       $13.92             --          --         --
Exercise                                               

price less
than market
price                    --      --         --            28,000       $14.44        $2.98         36,328       $5.12      $2.00

</TABLE>


        During 1995, the Company sold shares of common stock under the 1988 Plan
totaling  8,810 at $2.00 per share.  At December 31,  1997,  1,442 of the shares
sold under the 1988 Plan remain  subject to repurchase at an aggregate  price of
approximately $3,000.

       Other Disclosures.Pro forma information regarding net income and earnings
per share is required by SFAS No. 123, and has been determined as if the Company
had been  accounting  for its employee stock options under the fair value method
of SFAS No. 123. The fair value for these  options was  estimated at the date of
grant
                                       59

<PAGE>


                       SYNAPTIC PHARMACEUTICAL CORPORATION
                   NOTES TO FINANCIAL STATEMENTS--(Continued)
                                December 31, 1997


using a  Black-Scholes  option pricing model with the following  assumptions for
1997, 1996 and 1995, respectively:  weighted average risk-free interest rates of
5.92%, 6.34% and 6.50%; no dividends;  and a  weighted-average  expected life of
the options of 5 years.  Weighted  average  volatility  factors of the  expected
market price of the Company's common stock of .623, .352 and .352, were used for
1997, 1996 and 1995, respectively.  Options granted in 1995 were issued prior to
the initial public offering.

        The  Black-Scholes  option  valuation  model  was  developed  for use in
estimating the fair value of traded  options which have no vesting  restrictions
and are fully  transferable.  In addition,  option  valuation models require the
input of highly  subjective  assumptions  including  the  expected  stock  price
volatility.  Because the Company's  employee stock options have  characteristics
significantly different from those of traded options, and because changes in the
subjective input assumptions can materially  affect the fair value estimate,  in
management's  opinion, the existing models do not necessarily provide a reliable
single measure of the fair value of its employee stock options.

        For purposes of pro forma net loss disclosures, the estimated fair value
of options granted  subsequent to 1994 is amortized to expense over the options'
vesting period. The Company's pro forma net loss information is as follows:

                                        1997         1996         1995
                                  ------------  ------------  ------------
Pro forma net loss                $(6,113,000)  $(2,847,000)  $(3,381,000)
Pro forma net loss per share      $    (0.75)   $     (0.38)  $     (4.78)


        The pro forma  information  above is not likely to be  representative of
the  effects on  reported  net loss for future  years as options  are  generally
granted each year and vest over several years and only include grants subsequent
to 1994.

        For certain  options  granted  during  1996,  the  Company has  recorded
pursuant to APB No. 25 approximately  $388,000 of deferred  compensation expense
representing  the  difference  between the exercise price thereof and the market
value of the common stock as of the date of grant. This compensation  expense is
amortized  over the  vesting  period of each  option  granted.  Amortization  of
deferred  compensation  under the  Incentive  Plans  amounted  to  approximately
$124,000,  $179,000 and $86,000  during 1997,  1996 and 1995,  respectively.  In
addition, approximately $12,000, $121,000 and $1,000 of deferred compensation as
it relates to the  Incentive  Plans was  reversed  during  1997,  1996 and 1995,
respectively, due to the forfeiture of the unvested options.


Note 8 -- Income Taxes

        The liability method is used in accounting for income taxes.  Under this
method,  deferred tax assets and liabilities are determined based on differences
between  financial  reporting  and tax bases of assets and  liabilities  and are
measured  using the  enacted  tax rates and laws that will be in effect when the
differences are expected to reverse.

                                       60

<PAGE>


                       SYNAPTIC PHARMACEUTICAL CORPORATION
                   NOTES TO FINANCIAL STATEMENTS--(Continued)
                                December 31, 1997


        At December  31,  1997 and 1996,  the  Company  had net  operating  loss
("NOL")   carryforwards   of   approximately    $25,000,000   and   $21,000,000,
respectively,  for Federal  income tax purposes that will expire  principally in
the years  2002  through  2012.  In  addition,  the  Company  had  research  and
development credit  carryforwards  which will expire principally in 2002 through
2009.  For  financial  reporting  purposes,   a  valuation  allowance  has  been
recognized to offset the deferred tax assets related to these carryforwards. Due
to the  limitations  imposed by the Tax  Reform Act of 1986,  and as a result of
significant changes in the Company's ownership in 1993 and 1997, the utilization
of approximately  $25,000,000 of net operating loss  carryforwards is subject to
annual  limitation.  The utilization of the research and development  credits is
similarly limited.

        A reconciliation  of the Company's income tax expense  (benefit) at U.S.
federal  statutory  tax rates to  recorded  income tax expense  (benefit)  is as
follows:


                                      1997             1996           1995
                                  ------------    -----------   ------------
Tax at U.S. statutory rates       $(1,818,000)    $ (895,000)   $(1,145,000)
State income taxes                   (318,000)      (156,000)      (200,000)
Expiration of state NOL's             356,000             --             --
Other                                 108,000          8,000         37,000
Valuation allowance recorded        1,672,000      1,043,000      1,308,000
                                  ------------    -----------   ------------
    Recorded tax provision                 --             --             --
                                  ============    ===========   ============

        Significant  components  of the  Company's  deferred  tax  assets  as of
December 31, 1997 and 1996, are as follows:


                                                      1997                1996
Deferred tax assets:                            -------------      ------------
Net operating loss carryforwards                $  9,752,000       $  8,579,000
Research and development credit carryforwards      1,500,000          1,500,000
Book over tax amortization                           770,000            271,000
                                                -------------      ------------
    Total deferred tax assets                     12,022,000         10,350,000
Valuation allowance                              (12,022,000)       (10,350,000)
Deferred tax assets:                            -------------      ------------
Net deferred tax assets                                   --                 --
                                                =============      ============

Note 9 -- Commitments

        The Company leases  facilities  under an agreement  expiring on December
31, 2015.

        Rent  expense  for the years  ended  December  31,  1997,  1996 and 1995
approximated  $703,000,  $674,000,  and  $654,000,  respectively,  and  included
executory  costs of  $120,000,  $93,000 and $80,000,  respectively.  In November
1996,  a standby  letter of credit for  $580,000 was issued to the landlord as a
security deposit (expires  November 1998). The Company is to renew the letter of
credit  annually  during the  duration of the lease.  As of December 31, 1997, a
bank  imposed  restriction  has been  placed  on  $600,000  in cash  held in the
Company's investment account to secure the letter of credit.

                                       61

<PAGE>


                       SYNAPTIC PHARMACEUTICAL CORPORATION
                   NOTES TO FINANCIAL STATEMENTS--(Continued)
                                December 31, 1997


        As of December 31, 1997,  future minimum annual payments under the lease
are as follows:


       1998        $   644,000
       1999            644,000
       2000          1,155,000
       2001          1,155,000
       2002          1,155,000
 Thereafter         19,225,000
                  ------------
      Total       $ 23,978,000
                  ============

        The  Company is party to two  license  agreements  with  major  research
universities.  Under the terms of the agreements, the Company received worldwide
nonexclusive  licenses  under patents  issued in December 1980 and January 1991,
which patents  expire in 1997 through 2008. One of these  agreements  requires a
$10,000 annual payment.  The Company is also committed under these agreements to
pay  royalties  on future net sales of  products  employing  the  technology  or
falling under claims of the patents covered by these agreements.

        The Company has an employment agreement with its Chairman, President and
Chief Executive Officer which provides for severance  payments of up to one year
of  base  salary  upon  the  occurrence  of  certain  events,   including  early
termination and termination upon a change in control, as defined. In addition to
severance  payments,  under  certain  circumstances,  the  agreement  calls  for
immediate vesting of any unvested shares of common stock and stock options.

        At December 31, 1997, the Company had entered into  agreements with each
of its Senior Vice President and Chief Financial Officer,  Senior Vice President
for  Research  and  Development,  Vice  President  and General  Counsel and Vice
President  of  Business  Development  which  provide for  severance  payments in
amounts equal to 50% of annual base salary,  on substantially  the same terms as
stated  above.  In addition  to  severance,  under  certain  circumstances,  the
agreements call for immediate vesting of any unvested shares of common stock and
stock options.


Note 10 -- Employee Benefit Plans

        The Company established a defined contribution  employee retirement plan
(the "Plan")  effective  January 1, 1990,  conforming  to Section  401(k) of the
Internal  Revenue Code ("IRC").  All eligible  employees with six months service
may elect to have a portion of their salary deducted and contributed to the Plan
up to the maximum  allowable  limitations of the IRC. The Company matches 50% of
each  participant's  contribution up to the first 5% of annual  compensation (as
defined)  with a  maximum  employer  contribution  of  2.5%  of a  participant's
compensation.  The Company's  matching portion,  which amounted to approximately
$107,000,

                                       62

<PAGE>


                       SYNAPTIC PHARMACEUTICAL CORPORATION
                   NOTES TO FINANCIAL STATEMENTS--(Continued)
                                December 31, 1997


$103,000  and $42,300  for the years ended  December  31,  1997,  1996 and 1995,
respectively, vests over a six-year period.

        The Company currently provides medical, dental, long-term disability and
life  insurance  benefits  for its  full-time  employees.  The Company  does not
presently provide any post-retirement health benefits.


Note 11 -- Subsequent Events

        On January 12, 1998,  the Company  entered into a cooperation  agreement
with Grunenthal GmbH ("Grunenthal").  Under this agreement the parties agreed to
work together in  discovering  and  developing  drugs for the treatment of pain.
Synaptic  will use its  receptor-targeted  drug  design  technology  to identify
compounds  of interest  and  Grunenthal  will use its  expertise to evaluate the
compounds in pain model systems and to conduct  preclinical and clinical studies
with promising  compounds.  The companies will each be responsible for their own
research  costs  and  equally  share the  development  costs  through  Phase IIa
clinical trials.  Synaptic will retain manufacturing and marketing rights in the
U.S.,  Canada and Mexico and share these rights in countries  outside of Europe,
South and Central America.

        On  March 2,1998, the Company and Glaxo entered into the Glaxo Agreement
pursuant to which the Company granted Glaxo (i) a nonexclusive license under the
Company's  alpha 1  adrenergic  receptor  patents to develop  and sell  alpha-1a
selective compounds for therapeutic applications other than the treatment of BPH
and (ii) until May 22, 1999, a nonexclusive license under its alpha 1 adrenergic
receptor  patents and its BPH use  patents to develop  but not to  commercialize
alpha-1a selective compounds for the treatment of BPH. In addition,  the Company
granted  Glaxo an  option  to obtain a  nonexclusive  license  under its alpha 1
adrenergic receptor patents and its BPH use patents to develop and commercialize
alpha-1a  selective   compounds  for  the  treatment  of  BPH.  Such  option  is
exercisable by Glaxo only until May 22, 1999, upon the payment to Synaptic of an
additional amount. As consideration for the foregoing licenses and option, Glaxo
made a  $2,000,000  payment to  Synaptic.  Synaptic is also  entitled to receive
royalties  on sales of all  alpha-1a  selective  drugs  sold by Glaxo so long as
Synaptic has an issued patent relating to an alpha 1 adrenergic receptor subtype
in at least one  major  market  country,  as well as  royalties  on sales of any
alpha-1a  antagonist  for the treatment of BPH in any country in which  Synaptic
has an issued BPH use patent.



                                       63

<PAGE>



Item 9.  Changes in and Disagreements with Accountants on Accounting and
          Financial Disclosure

    None.



                                       64

<PAGE>



                                    Part III


Item 10.  Directors and Executive Officers of the Registrant

    The information  required by this item is  incorporated  herein by reference
from  the   information   under  the  captions   "ELECTION  OF  DIRECTORS"   and
"COMPENSATION AND OTHER INFORMATION  CONCERNING OFFICERS,  DIRECTORS AND CERTAIN
STOCKHOLDERS" contained in the Proxy Statement.


Item 11.  Executive Compensation

    The information  required by this item is  incorporated  herein by reference
from the  information  under the  caption  "COMPENSATION  AND OTHER  INFORMATION
CONCERNING OFFICERS,  DIRECTORS AND CERTAIN STOCKHOLDERS" contained in the Proxy
Statement.


Item 12.  Security Ownership of Certain Beneficial Owners and Management

    The information  required by this item is  incorporated  herein by reference
from the information under the caption "SECURITY OWNERSHIP OF CERTAIN BENEFICIAL
OWNERS AND MANAGEMENT" contained in the Proxy Statement.


Item 13.  Certain Relationships and Related Transactions

    The information  required by this item is  incorporated  herein by reference
from the  information  under the  caption  "COMPENSATION  AND OTHER  INFORMATION
CONCERNING OFFICERS,  DIRECTORS AND CERTAIN STOCKHOLDERS" contained in the Proxy
Statement.



                                       65

<PAGE>



                                     Part IV


Item 14.  Exhibits, Financial Statement Schedules and Reports on Form 8-K

(a)     (1)    Financial Statements

    Reference is made to the Index to Financial Statements under Item 8, Part II
hereof.


    (2)    Financial Statement Schedules

    The Financial  Statement  Schedules have been  intentionally  omitted either
because they are not required or because the  information  has been  included in
the notes to the Financial Statements included in this Report on Form 10-K.


        (3)    Exhibits


Exhibit
No.               Description
- -----------       --------------------------------------------------------------
   3.1(a)         Amended  and  Restated  Certificate  of  Incorporation  of the
                  Company, filed December 19, 1995 (incorporated by reference to
                  Exhibit 3.1(a) to the Company's  Quarterly Report on Form 10-Q
                  filed for the quarter  ended June 30,  1996,  Commission  File
                  Number 0-27324)
   3.1(b)         Certificate of Designations  of Series A Junior  Participating
                  Preferred  Stock  filed  December  19, 1995  (incorporated  by
                  reference to Exhibit 3.1(b) to the Company's  Quarterly Report
                  on Form 10-Q filed for the quarter  ended  December  31, 1995,
                  Commission File Number 0-27324)
   3.1(c)         Certificate   of   Amendment   of  the  Amended  and  Restated
                  Certificate  of  Incorporation  of the Company,  filed June 5,
                  1996  (incorporated  by  reference  to  Exhibit  3.1(c) to the
                  Company's  Quarterly Report on Form 10-Q filed for the quarter
                  ended June 30, 1996, Commission File Number 0-27324)
       3.2        Amended and Restated By-Laws of the Company, as amended on
                  February 6, 1998 (filed herewith)
       4.1        Specimen  of  Certificate  of  Common  Stock  of  the  Company
                  (incorporated  by  reference  to  Exhibit  4 to the  Company's
                  Registration  Statement  on Form S-1, as amended  (File Number
                  33-98366), which became effective on December 13, 1995)
       4.2        Rights  Agreement  dated as of December 11, 1995,  between the
                  Company and Chase Mellon Shareholder Services, as Rights Agent
                  (incorporated  by  reference  to Exhibit 4.2 to the  Company's
                  Annual  Report on Form 10-K  filed for the  fiscal  year ended
                  December 31, 1995, Commission File Number 0-27324)


                                       66

<PAGE>




     *10.1        Research, Option and License Agreement dated as of January 25,
                  1991,  between  the  Company  and Eli  Lilly and  Company,  as
                  amended by Addendum dated as of January 1, 1995  (incorporated
                  by  reference to Exhibit  10.1 to the  Company's  Registration
                  Statement  on Form S-1,  as amended  (File  Number  33-98366),
                  which became effective on December 13, 1995)
     *10.2        Research  Collaboration  and  License  Agreement  dated  as of
                  November 30, 1993,  between the Company and Merck & Co., Inc.,
                  as amended by  Amendment  No. 1 dated as of February 15, 1995,
                  and as modified by the Letter  Agreement dated August 25, 1995
                  (incorporated  by reference  to Exhibit 10.2 to the  Company's
                  Registration  Statement  on Form S-1, as amended  (File Number
                  33-98366), which became effective on December 13, 1995)
     *10.3        Research  and  License  Agreement  dated as of August 4, 1994,
                  between     the     Company     and     Ciba-Geigy     Limited
                  (predecessor-in-interest   of  Novartis   AG,  the  parent  of
                  Novartis Pharma AG) (incorporated by reference to Exhibit 10.3
                  to the  Company's  Registration  Statement  on  Form  S-1,  as
                  amended  (File Number  33-98366),  which  became  effective on
                  December 13, 1995)
     +10.4        1988  Amended  and  Restated  Incentive  Plan  of the  Company
                  (incorporated  by reference  to Exhibit 10.9 to the  Company's
                  Registration  Statement  on Form S-1, as amended  (File Number
                  33-98366), which became effective on December 13, 1995)
     +10.5        Form of Restricted  Stock  Purchase  Agreement  under the 1988
                  Amended   and   Restated   Incentive   Plan  of  the   Company
                  (incorporated  by reference to Exhibit  10.10 to the Company's
                  Registration  Statement  on Form S-1, as amended  (File Number
                  33-98366), which became effective on December 13, 1995)
     +10.6        Form of  Incentive  Stock  Option  Agreement  under  the  1988
                  Amended   and   Restated   Incentive   Plan  of  the   Company
                  (incorporated  by reference to Exhibit  10.11 to the Company's
                  Registration  Statement  on Form S-1, as amended  (File Number
                  33-98366), which became effective on December 13, 1995)
     +10.7        Form of  Non-Qualified  Stock Option  Agreement under the 1988
                  Amended   and   Restated   Incentive   Plan  of  the   Company
                  (incorporated  by reference to Exhibit  10.12 to the Company's
                  Registration  Statement  on Form S-1, as amended  (File Number
                  33-98366), which became effective on December 13, 1995)
      10.8        Third Amended and Restated Registration Rights Agreement dated
                  as of January 19, 1993, as amended by Amendment No. 1 dated as
                  of August 4, 1994  (incorporated by reference to Exhibit 10.13
                  to the  Company's  Registration  Statement  on  Form  S-1,  as
                  amended  (File Number  33-98366),  which  became  effective on
                  December 13, 1995)
      10.9        Form of Common Stock Purchase Warrant dated as of January 1993
                  (incorporated  by reference to Exhibit  10.15 to the Company's
                  Registration  Statement  on Form S-1, as amended  (File Number
                  33-98366), which became effective on December 13, 1995)


                                       67

<PAGE>




      10.10       License Agreement dated June 3, 1991,  between the Company and
                  the  Trustees of Columbia  University  in the City of New York
                  (incorporated  by reference to Exhibit  10.16 to the Company's
                  Registration  Statement  on Form S-1, as amended  (File Number
                  33-98366), which became effective on December 13, 1995)
      10.11       Sublease Agreement dated October 31, 1991, between the Company
                  and Playtex,  Inc., as amended by the First Sublease Amendment
                  effective as of August 15, 1994  (incorporated by reference to
                  Exhibit 10.18 to the Company's  Registration Statement on Form
                  S-1, as amended (File Number 33-98366), which became effective
                  on December 13, 1995)
     +10.12       Employment  Agreement  dated as of February 14, 1994,  between
                  the Company and Robert I. Taber  (incorporated by reference to
                  Exhibit 10.21 to the Company's  Registration Statement on Form
                  S-1,  as  amended  (File  Number  33-  98366),   which  became
                  effective on December 13, 1995)
     +10.13       Employment  Agreement  dated as of April 6, 1995,  between the
                  Company and Richard L. Weinshank (incorporated by reference to
                  Exhibit 10.24 to the Company's  Registration Statement on Form
                  S-1,  as  amended  (File  Number  33-  98366),   which  became
                  effective on December 13, 1995)
      10.14       Form of Indemnification Agreement between the Company and each
                  of its  executive  officers  and  directors  (incorporated  by
                  reference  to  Exhibit  10.25  to the  Company's  Registration
                  Statement  on Form S-1,  as amended  (File  Number  33-98366),
                  which became effective on December 13, 1995)
     +10.15       1996 Incentive Plan of the Company (incorporated by  reference
                  to Exhibit 10.21  to the Company's Annual  Report on Form 10-K
                  filed for the fiscal year  ended December 31, 1995, Commission
                  File No. 0-27324)
     +10.16       Incentive  Stock  Option  Agreement  dated  October  1,  1993,
                  between the Company and Kathleen P. Mullinix  (incorporated by
                  reference  to  Exhibit  10.28  to the  Company's  Registration
                  Statement  on Form S-1,  as amended  (File  Number  33-98366),
                  which became effective on December 13, 1995)
     +10.17       Incentive  Stock  Option  Agreement  dated  February 14, 1994,
                  between  the  Company  and  Robert I. Taber  (incorporated  by
                  reference  to  Exhibit  10.29  to the  Company's  Registration
                  Statement  on Form S-1,  as amended  (File  Number 33- 98366),
                  which became effective on December 13, 1995)
     +10.18       Incentive  Stock  Option  Agreement  dated  February  7, 1994,
                  between  the  Company  and  Lisa L.  Reiter  (incorporated  by
                  reference  to  Exhibit  10.30  to the  Company's  Registration
                  Statement  on Form S-1,  as amended  (File  Number 33- 98366),
                  which became effective on December 13, 1995)
     +10.19       Incentive  Stock Option  Agreement dated as of March 21, 1996,
                  between the Company and Kathleen P. Mullinix  (incorporated by
                  reference to Exhibit 10.25 to the Company's  Quarterly  Report
                  on Form  10-Q  filed for the  quarter  ended  March 31,  1996,
                  Commission File Number 0-27324)


                                       68

<PAGE>




     +10.20       Incentive  Stock Option  Agreement dated as of March 21, 1996,
                  between  the Company  and Robert L.  Spence  (incorporated  by
                  reference to Exhibit 10.26 to the Company's  Quarterly  Report
                  on Form  10-Q  filed for the  quarter  ended  March 31,  1996,
                  Commission File Number 0-27324)
     +10.21       Incentive  Stock Option  Agreement dated as of March 21, 1996,
                  between  the  Company  and  Lisa L.  Reiter  (incorporated  by
                  reference to Exhibit 10.27 to the Company's  Quarterly  Report
                  on Form  10-Q  filed for the  quarter  ended  March 31,  1996,
                  Commission File Number 0-27324)
     +10.22       Nonqualified  Stock  Option  Agreement  dated as of March  21,
                  1996,   between  the   Company   and   Richard  L.   Weinshank
                  (incorporated  by reference to Exhibit  10.28 to the Company's
                  Quarterly  Report on Form 10-Q  filed  for the  quarter  ended
                  March 31, 1996, Commission File Number 0-27324)
     +10.23       Form of  Incentive  Stock  Option  Agreement  under  the  1996
                  Incentive Plan  (incorporated by reference to Exhibit 10.29 to
                  the  Company's  Quarterly  Report on Form  10-Q  filed for the
                  quarter ended March 31, 1996, Commission File Number 0-27324)
     +10.24       Form of  Nonqualified  Stock Option  Agreement  under the 1996
                  Incentive Plan  (incorporated by reference to Exhibit 10.30 to
                  the  Company's  Quarterly  Report on Form  10-Q  filed for the
                  quarter ended March 31, 1996, Commission File Number 0-27324)
   ***10.25       Research  and  License  Agreement  dated  as of May 31,  1996,
                  between     the     Company     and     Ciba-Geigy     Limited
                  (predecessor-in-interest  of Novartis  AG,  parent of Novartis
                  Pharma AG)  (incorporated by reference to Exhibit 10.31 to the
                  Company's  Quarterly  Report  on  Form  10-Q/A  filed  for the
                  quarter ended June 30, 1996, Commission File Number 0-27324)
   ***10.26       Supplement No. 1 to Research and License Agreement dated as of
                  August 4, 1994,  between the Company  and  Ciba-Geigy  Limited
                  (predecessor-in-interest  of Novartis  AG,  parent of Novartis
                  Pharma AG)  (incorporated by reference to Exhibit 10.32 to the
                  Company's  Quarterly  Report  on  Form  10-Q/A  filed  for the
                  quarter ended June 30, 1996, Commission File Number 0-27324)
      10.27       1996  Nonemployee  Director  Stock  Option Plan of the Company
                  (incorporated  by reference to Exhibit  10.33 to the Company's
                  Quarterly Report on Form 10-Q filed for the quarter ended June
                  30, 1996, Commission File Number 0-27324)
      10.28       Form of Stock  Option  Agreement  under  the 1996  Nonemployee
                  Director  Stock  Option Plan of the Company  (incorporated  by
                  reference  to  Exhibit  A  attached  to  Exhibit  10.33 to the
                  Company's  Quarterly Report on Form 10-Q filed for the quarter
                  ended June 30, 1996, Commission File Number 0-27324)
    **10.29       Addendum No. 2 to Research, Option and License Agreement dated
                  as of  October 31, 1996, between the Company and Eli Lilly and
                  Company (incorporated  by  reference to  Exhibit  10.35 to the
                  Company's Annual Report on Form 10-K filed for the fiscal year
                  ended December 31, 1996, Commission File No. 0-27324)


                                       69

<PAGE>




    **10.30       Amendment No.2 to Research Collaboration and License Agreement
                  dated as  of  October 9, 1996, between the Company and Merck &
                  Co., Inc. (incorporated  by  reference to Exhibit 10.36 to the
                  Company's Annual Report on Form 10-K filed for the fiscal year
                  ended December 31, 1996, Commission File No. 0-27324)
     +10.31       Incentive  Stock  Option  Agreement  dated as of December  13,
                  1996,   between   the  Company   and   Kathleen  P.   Mullinix
                  (incorporated  by reference to Exhibit  10.37 to the Company's
                  Annual  Report on Form 10-K  filed for the  fiscal  year ended
                  December 31, 1996, Commission File No. 0-27324)
     +10.32       Form of Incentive Stock Option Agreement dated as of  December
                  13, 1996,  entered into between the Company and each of Robert
                  L. Spence, Robert I. Taber,  Lisa  L.  Reiter  and  Richard L.
                  Weinshank (incorporated by reference to  Exhibit  10.38 to the
                  Company's Annual Report on Form 10-K filed for the fiscal year
                  ended December 31, 1996, Commission File No. 0-27324)
   ***10.33       Collaborative  Research and License Agreement dated as of July
                  28, 1997, between the Company and the  Warner-Lambert  Company
                  (incorporated  by reference to Exhibit  10.39 to the Company's
                  Quarterly  Report on Form 10-Q  filed  for the  quarter  ended
                  September 30, 1997, Commission File Number 0- 27324)
     +10.34       Executive Employment Agreement effective as of October 1,1997,
                  between the Company and Dr.Kathleen P.Mullinix(filed herewith)
      10.35       Lease Agreement  dated November 19, 1997,  between the Company
                  and Century  Associates,  which becomes  effective  January 1,
                  1998 (filed herewith)
      10.36       Amendment No.3 to Research Collaboration and License Agreement
                  dated as  of December 1, 1997, between the Company and Merck &
                  Co., Inc. (filed herewith)
     +10.37       Amended and Restated Employment Agreement dated as of  January
                  1, 1998,  between  the  Company  and  Robert  L. Spence (filed
                  herewith)
    **10.38       Cooperation Agreement dated as of January 12,1998, between the
                  Company and Grunenthal GmbH (filed herewith)
     +10.39       Amended and Restated Employment Agreement dated as of February
                  7, 1998, between  the  Company  and  Lisa  L.  Reiter   (filed
                  herewith)
      10.40       Amendment No.4 to Research Collaboration and License Agreement
                  dated as of March 2,1998, between the Company and Merck & Co.,
                  Inc. (filed herewith)
    **10.41       Option and License Agreement dated as of March 2,1998, between
                  the Company and Glaxo Group Limited (filed herewith)
      23.1        Consent of Independent Auditors, Ernst & Young LLP
      24          Powers of Attorney


                                       70

<PAGE>


      27          Financial Data Schedule

- -----------------


*     Portions of this Exhibit were omitted and confidential  treatment  thereof
      has  been  granted  by  the  Secretary  of  the  Securities  and  Exchange
      Commission  in  response  to  the  Registrant's   Application   Requesting
      Confidential Treatment under Rule 406 under the Securities Act of 1933, as
      amended.

**    Portions of this Exhibit have been omitted and filed  separately  with the
      Secretary  of the  Securities  and  Exchange  Commission  pursuant  to the
      Registrant's  Application  Requesting  Confidential  Treatment  under Rule
      24b-2 under the Securities Exchange Act of 1934, as amended.

***   Portions of this Exhibit were omitted and confidential  treatment  thereof
      has  been  granted  by  the  Secretary  of  the  Securities  and  Exchange
      Commission  in  response  to  the  Registrant's   Application   Requesting
      Confidential  Treatment under Rule 246-2 under the Securities Act of 1933,
      as amended.

+     Management contracts and compensatory plans or arrangements


(b)   Reports on Form 8-K

      There  were no  reports  on Form 8-K filed by the  Registrant  during  the
fourth quarter of the fiscal year ended December 31, 1997.


Supplemental Information

      Copies of the Registrant's Proxy Statement and copies of the form of proxy
to be used at the Annual  Meeting of  Stockholders  to be held on May 12,  1998,
will be furnished to the Securities and Exchange Commission at the time they are
distributed to the Registrant's stockholders.

                                       71

<PAGE>




                                 SIGNATURE PAGE


      Pursuant  to the  requirements  of Section  13 or 15(d) of the  Securities
Exchange Act of 1934, the registrant has duly caused this report to be signed on
its behalf by the undersigned, thereunto duly authorized.

                                    SYNAPTIC PHARMACEUTICAL CORPORATION

Date: March 27, 1998                By:/s/ Kathleen P. Mullinix
                                       -----------------------------------
                                    Name:    Kathleen P. Mullinix
                                    Title:   Chairman, President and Chief
                                              Executive Officer


      Pursuant to the  requirements  of the Securities Act of 1934,  this report
has been  signed by the  following  persons on behalf of the  registrant  in the
capacities and on the dates indicated.



           Signature                    Title                     Date

/s/ Kathleen P. Mullinix, Ph.D.   Chairman, President and
                                   Chief Executive Officer        March 27, 1998
- -------------------------------
Kathleen P. Mullinix                        



/s/ Robert L. Spence               Senior Vice President and 
- -------------------------------     Chief Financial Officer       March 27, 1998
Robert L. Spence                                           


                   *               Director                       March 27, 1998
- -------------------------------
Jonathan J. Fleming


                   *               Director                       March 27, 1998
- -------------------------------
Zola P. Horovitz, Ph.D.


                   *               Director                       March 27, 1998
- -------------------------------
Eric R. Kandel, M.D.


                   *               Director                       March 27, 1998
- -------------------------------
John E. Lyons


                   *               Director                       March 27, 1998
- -------------------------------
Sandra Panem


                   *               Director                       March 27, 1998
- -------------------------------
Alison Taunton-Rigby, Ph.D.



* By:/s/ Kathleen P. Mullinix
     -----------------------------------
      Name:  Kathleen P. Mullinix, Ph.D.
      Title: Attorney-in-Fact

                                       72

                                                                EXHIBIT 3.2
                                                                -----------

                                                              Adopted March 1992
                                                              as Amended Through
                                                                February 6, 1998


                       SYNAPTIC PHARMACEUTICAL CORPORATION
                               (the "Corporation")

                          Amended and Restated By-laws

                                    ARTICLE I
                                     OFFICES

                  Section  1.  The  registered  office  shall  be in the City of
Wilmington, County of New Castle, State of Delaware.

                  Section 2. The Corporation may also have offices at such other
places both  within and without the State of Delaware as the board of  directors
may from time to time determine or the business of the Corporation may require.

                                   ARTICLE II
                            MEETINGS OF STOCKHOLDERS

                  Section 1. All meetings of the  stockholders  for the election
of directors  shall be held in the City of New York,  State of New York, at such
place as may be fixed  from time to time by the board of  directors,  or at such
other  place  either  within  or  without  the  State  of  Delaware  as shall be
designated  from time to time by the board of directors and stated in the notice
of the meeting.  Meetings of  stockholders  for any other purpose may be held at
such time and place, within or without the State of Delaware, as shall be stated
in the notice of the meeting or in a duly executed waiver of notice thereof.

                  Section 2. Annual  meetings of  stockholders,  commencing with
the  year  1987,  shall  be held  on the  first  Thursday  of May if not a legal
holiday,  and if a legal  holiday,  then on the next secular day  following,  at
11:00 A.M., or at such other date and time as shall be  designated  from time to
time by the board of directors and stated in the notice of the meeting, at which
they shall elect by a plurality  vote a board of  directors,  and transact  such
other business as may properly be brought before the meeting.

                  Section 3. Written  notice of the annual  meeting  stating the
place, date and hour of the meeting shall be given to each stockholder  entitled
to vote at such  meeting  not less than ten nor more than sixty days  before the
date of the meeting.

                  Section 4. The officer  who has charge of the stock  ledger of
the  Corporation  shall prepare and make, at least ten days before every meeting
of stockholders, a complete list of the


                                       -1-

<PAGE>



stockholders  entitled to vote at the meeting,  arranged in alphabetical  order,
and showing the address of each stockholder and the number of shares  registered
in the name of each  stockholder.  Such list shall be open to the examination of
any  stockholder,  for any  purpose  germane  to the  meeting,  during  ordinary
business hours,  for a period of at least ten days prior to the meeting,  either
at a place within the city where the meeting is to be held, which place shall be
specified in the notice of the meeting,  or, if not so  specified,  at the place
where the meeting is to be held. The list shall also be produced and kept at the
time and  place  of the  meeting  during  the  whole  time  thereof,  and may be
inspected by any stockholder who is present.

                  Section  5.  Special  meetings  of the  stockholders,  for any
purpose  or  purposes,   unless  otherwise  prescribed  by  statute  or  by  the
certificate of incorporation,  may be called by the chairman of the board or the
president  and shall be called by the chairman of the board or the  president or
secretary at the request in writing of a majority of the members of the board of
directors.  Such  request  shall state the  purpose or purposes of the  proposed
meeting.

                  Section 6.  Written  notice of a special  meeting  stating the
place,  date and hour of the meeting  and the purpose or purposes  for which the
meeting  is called,  shall be given,  not less than ten nor more than sixty days
before the date of the  meeting,  to each  stockholder  entitled to vote at such
meeting.

                  Section  7.  Business  transacted  at any  special  meeting of
stockholders shall be limited to the purposes stated in the notice.

                  Section 8. The holders of a majority  of the stock  issued and
outstanding  and entitled to vote thereat,  present in person or  represented by
proxy,  shall  constitute a quorum at all meetings of the  stockholders  for the
transaction  of  business  except as  otherwise  provided  by  statute or by the
certificate of incorporation.  If, however,  such quorum shall not be present or
represented at any meeting of the  stockholders,  the  stockholders  entitled to
vote thereat,  present in person or  represented  by proxy,  shall have power to
adjourn the meeting from time to time, without notice other than announcement at
the meeting,  until a quorum shall be present or represented.  At such adjourned
meeting at which a quorum  shall be present or  represented  any business may be
transacted  which  might  have been  transacted  at the  meeting  as  originally
notified.  If the  adjournment  is for more than  thirty  days,  or if after the
adjournment  a new record date is fixed for the adjourned  meeting,  a notice of
the adjourned  meeting shall be given to each  stockholder of record entitled to
vote at the meeting.

                  Section 9. When a quorum is present at any  meeting,  the vote
of the holders of a majority of the shares of capital  stock having voting power
present in person or  represented  by proxy shall  decide any  question  brought
before such meeting, unless the question is one upon which, by express provision
of law or of the certificate of incorporation,  a different vote is required, in
which case such express  provision shall govern and control the decision of such
question.

                  Section 10. Unless  otherwise  provided in the  certificate of
incorporation,  each  stockholder  shall at every meeting of the stockholders be
entitled to one vote in person or by proxy


                                       -2-

<PAGE>



for  each  share  of  the  capital  stock  having  voting  power  held  by  such
stockholder,  but no proxy shall be voted on or after three years from its date,
unless the proxy provides for a longer period.

                  Section 11. Written notice of the intent by any stockholder to
make a  nomination  of any person  for  election  as a director  at a meeting of
stockholders must be received by the secretary of the Corporation not later than
(i) with respect to an election to be held at an annual meeting of stockholders,
ninety  days in  advance  of the  annual  meeting  and (ii) with  respect  to an
election to be held at a special  meeting of  stockholders  for the  election of
directors,  the close of business on the seventh day  following the day on which
notice of such meeting is first given to stockholders. The notice shall contain:
(A) the name and address of the  stockholder  who intends to make the nomination
and of the person or  persons to be  nominated;  (B) a  representation  that the
stockholder is a holder of record of shares of stock having power to vote at the
meeting  and  intends to appear in person or by proxy at the meeting to nominate
the  person  or  persons  specified  in the  notice:  (C) a  description  of all
arrangements or understandings  between the stockholder and each nominee and any
other person or persons  (naming  such person or persons)  pursuant to which the
nomination or nominations are to be made by the stockholder; (D) the citizenship
of each nominee  proposed by such  stockholder;  (E) the information  that would
have been  required to be included in a proxy  statement  filed  pursuant to the
proxy rules of the  Securities  and  Exchange  Commission  had each nominee been
nominated,  or  intended  to be  nominated,  by the  board of  directors  of the
Corporation;  and (F) the written consent of each nominee to serve as a director
of the Corporation if so elected.

                                   ARTICLE III
                                    DIRECTORS

                                     GENERAL

                  Section  1. The  number of  directors  constituting  the whole
board shall be seven.  The directors  shall be elected at the annual  meeting of
the  stockholders,  except  as  provided  in  Section  2 of this  Article  or as
otherwise provided in the Corporation's  certificate of incorporation,  and each
director elected shall hold office until his successor is elected and qualified.
Directors need not be stockholders.*

                  Section 2. Vacancies and newly created directorships resulting
from any  increase  in the  authorized  number of  directors  may be filled by a
majority of the  directors  then in office,  though less than a quorum,  or by a
sole remaining director, and the directors so chosen shall hold office until the
next annual  election  and until  their  successors  are duly  elected and shall
qualify,  unless sooner displaced.  If there are no directors in office, then an
election of directors may be held in the manner provided by law.

                  Section 3. The business of the Corporation shall be managed by
or under the  direction  of its board of  directors  which may exercise all such
powers of the Corporation and do all such lawful
- --------
*        This Section was amended by the Board of Directors on February 6, 1998,
 to read as set forth herein.

                                       -3-

<PAGE>



acts and things as are not by law or by the certificate of  incorporation  or by
these By-laws directed or required to be exercised or done by the stockholders.

                       MEETINGS OF THE BOARD OF DIRECTORS

                  Section 4. The board of directors of the  Corporation may hold
meetings,  both  regular  and  special,  either  within or without  the State of
Delaware.

                  Section 5. The first  meeting of each newly  elected  board of
directors  may be held at such time and place as shall be  specified in a notice
given as hereinafter provided for special meetings of the board of directors, or
as shall be specified in a written waiver signed by all of the directors.

                  Section 6. Regular  meetings of the board of directors  may be
held without notice at such time and at such place as shall from time to time be
determined by the board of directors.

                  Section 7. Special  meetings of the board may be called by the
president on twenty-four hours' notice to each director,  either personally,  by
mail,  by telegram or by  telecopier.  Special  meetings  shall be called by the
president or secretary in like manner and on like notice on the written  request
of two directors.

                  Section  8.  At all  meetings  of the  board  of  directors  a
majority of the  directors  shall  constitute  a quorum for the  transaction  of
business  and the act of a majority of the  directors  present at any meeting at
which there is a quorum  shall be the act of the board of  directors,  except as
may  be  otherwise  specifically  provided  by  law  or by  the  certificate  of
incorporation.  If a quorum  shall not be present at any meeting of the board of
directors  the  directors  present  thereat may adjourn the meeting from time to
time,  without  notice other than  announcement  at the meeting,  until a quorum
shall be present.

                  Section 9. Unless  otherwise  restricted by the certificate of
incorporation  or these Bylaws,  any action required or permitted to be taken at
any meeting of the board of directors or of any  committee  thereof may be taken
without a meeting if all members of the board or committee,  as the case may be,
consent  thereto in  writing,  and the  writing or  writings  are filed with the
minutes of proceedings of the board or committee.

                  Section 10. Unless otherwise  restricted by the certificate of
incorporation  or these  By-laws,  members  of the  board of  directors,  or any
committee designated by the board of directors,  may participate in a meeting of
the board of directors,  or any committee,  by means of conference  telephone or
similar communications  equipment by means of which all persons participating in
the meeting  can hear each  other,  and such  participation  in a meeting  shall
constitute presence in person at the meeting.




                                       -4-

<PAGE>



                             COMMITTEES OF DIRECTORS

                  Section 11. The board of directors  may, be resolution  passed
by a  majority  of the  whole  board,  designate  one or more  committees,  each
committee  to consist of one or more of the  directors of the  Corporation.  The
board of directors may designate one or more  directors as alternate  members of
any committee,  who may replace any absent or disqualified member at any meeting
of the committee. In the absence or disqualification of a member of a committee,
the member or members thereof present at any meeting and not  disqualified  from
voting,  whether or not he or they constitute a quorum, may unanimously  appoint
another  member of the board of  directors to act at the meeting in the place of
any such  absent or  disqualified  member.  Any such  committee,  to the  extent
provided  in the  resolution  of the  board  of  directors,  shall  have and may
exercise  all  the  powers  and  authority  of the  board  of  directors  in the
management of the business and affairs of the Corporation, and may authorize the
seal of the corporation to be affixed to all papers which may require it; but no
such  committee  shall have the power or  authority in reference to amending the
certificate of incorporation,  adopting an agreement of merger or consolidation,
recommending  to  the  stockholders  the  sale,  lease  or  exchange  of  all or
substantially all of the Corporation's property and assets,  recommending to the
stockholders a dissolution of the  Corporation or a revocation of a dissolution,
or amending the By-laws of the  Corporation;  and,  unless the resolution or the
certificate of incorporation  expressly so provide, no such committee shall have
the power or  authority  to declare a dividend or to  authorize  the issuance of
stock.  Such  committee  or  committees  shall have such name or names as may be
determined from time to time by resolution adopted by the board of directors.

                            COMPENSATION OF DIRECTORS

                  Section 12. Unless otherwise  restricted by the certificate of
incorporation or these By-laws,  the board of directors shall have the authority
to fix the compensation of directors.  The directors may be paid their expenses,
if any, of  attendance at each meeting of the board of directors and may be paid
a fixed sum for attendance at each meeting of the board of directors or a stated
salary as director. No such payment shall preclude any director from serving the
Corporation in any other capacity and receiving compensation  therefor.  Members
of special or standing committees may be allowed like compensation for attending
committee meetings.

                              REMOVAL OF DIRECTORS

                  Section 13. Unless otherwise  restricted by the certificate of
incorporation  or By-laws,  any director or the entire board of directors may be
removed,  with or without cause, by the holders of a majority of shares entitled
to vote at an election of directors.

                                   ARTICLE IV
                                     NOTICES

                  Section 1.  Whenever,  under the  provisions  of law or of the
certificate of incorporation or of these By-laws, notice is required to be given
to any  director or  stockholder,  it shall not be  construed  to mean  personal
notice, but such notice may be given in writing, by mail,


                                       -5-

<PAGE>



addressed to such director or  stockholder,  at his address as it appears on the
records of the Corporation,  with postage thereon prepaid, and such notice shall
be deemed to be given at the time when the same shall be deposited in the United
States mail.  Notice to directors  may also be given by hand,  by telegram or by
telecopy.

                  Section 2.  Whenever  any notice is required to be given under
the  provisions  of law or of  the  certificate  of  incorporation  or of  these
By-laws,  a waiver thereof in writing,  signed by the person or persons entitled
to said notice, whether before or after the time stated therein, shall be deemed
equivalent thereto.

                                    ARTICLE V
                                    OFFICERS

                  Section 1. The principal  officers of the Corporation shall be
chosen by the board of directors and shall be a president,  a vice-president,  a
secretary  and a treasurer.  The board of directors  may also choose  additional
vice-presidents, and one or more assistant secretaries and assistant treasurers.
Any number of offices may be held by the same person,  unless the certificate of
incorporation or these By-laws otherwise provide.

                  Section 2. The board of directors at its first  meeting  after
each  annual  meeting of  stockholders  shall  choose a  president,  one or more
vice-presidents, a secretary and a treasurer.

                  Section  3. The board of  directors  may  appoint  such  other
officers and agents as it shall deem  necessary who shall hold their offices for
such terms and shall  exercise  such powers and perform  such duties as shall be
determined from time to time by the board.

                  Section  4. The  salaries  of all  principal  officers  of the
Corporation shall be fixed by the board of directors.

                  Section 5. The officers of the  Corporation  shall hold office
until their successors are chosen and qualify.  Any officer elected or appointed
by the board of directors may be removed at any time by the affirmative  vote of
a majority of the board of directors. Any vacancy occurring in any office of the
Corporation shall be filled by the board of directors.

                                  THE PRESIDENT

                  Section 6. The president shall be the chief executive  officer
of the Corporation,  shall have general and active management of the business of
the  Corporation  and shall see that all orders and  resolutions of the board of
directors are carried into effect.  The president  shall preside at the meetings
of the stockholders and the board of directors.  He shall have such other powers
and perform such other duties as are provided in these  By-laws and, in addition
thereto, as the board of directors may from time to time determine.



                                       -6-

<PAGE>



                  Section 7. The president  shall execute  bonds,  mortgages and
other  contracts  requiring a seal,  under the seal of the  Corporation,  except
where  required or  permitted  by law to be  otherwise  signed and  executed and
except where the signing and execution  thereof shall be expressly  delegated by
the board of directors to some other officer or agent of the Corporation.

                               THE VICE-PRESIDENTS

                  Section 8. In the absence of the  president or in the event of
his  inability or refusal to act, the  vice-president  (or in the event there be
more than one vice-president, the vice-presidents in the order designated by the
directors,  or in the  absence  of any  designation,  then in the order of their
election)  shall perform the duties of the  president,  and when so acting shall
have  all  the  powers  of and be  subject  to all  the  restrictions  upon  the
president.  The  vice-presidents  shall  perform such other duties and have such
other powers as the board of directors may from time to time prescribe.

                      THE SECRETARY AND ASSISTANT SECRETARY

                  Section 9. The  secretary  shall  attend all  meetings  of the
board of  directors  and all  meetings  of the  stockholders  and record all the
proceedings of the meetings of the  Corporation and of the board of directors in
a book to be kept for  that  purpose  and  shall  perform  like  duties  for the
standing  committees when required.  He shall give, or cause to be given, notice
of all  meetings  of the  stockholders  and  special  meetings  of the  board of
directors, and shall perform such other duties as may be prescribed by the board
of directors or president,  under whose  supervision  he shall be. He shall have
custody  of the  corporate  seal  of the  Corporation  and he,  or an  assistant
secretary, shall have authority to affix the same to any instrument requiring it
and when so affixed,  it may be attested by his signature or by the signature of
such assistant  secretary.  The board of directors may give general authority to
any  other  officer  to affix  the seal of the  Corporation  and to  attest  the
affixing by his signature.

                  Section 10. The assistant secretary,  or if there be more than
one, the assistant secretaries in the order determined by the board of directors
(or if  there be no such  determination,  then in the  order of their  election)
shall,  in the  absence of the  secretary  or in the event of his  inability  or
refusal to act,  perform the duties and exercise the powers of the secretary and
shall  perform  such other  duties  and have such  other  powers as the board of
directors may from time to time prescribe.

                     THE TREASURER AND ASSISTANT TREASURERS

                  Section  11.  The  treasurer  shall  have the  custody  of the
corporate  funds and  securities  and shall keep full and  accurate  accounts of
receipts  and  disbursements  in books  belonging to the  Corporation  and shall
deposit all moneys and other  valuable  effects in the name and to the credit of
the  Corporation  in such  depositories  as may be  designated  by the  board of
directors.

                  Section  12. The  treasurer  shall  disburse  the funds of the
Corporation as may be ordered by the board of directors,  taking proper vouchers
for such  disbursements,  and  shall  render to the  president  and the board of
directors, at its regular meetings, or when the board of directors so


                                       -7-

<PAGE>



requires, an account of all his transactions as treasurer and of the financial
condition of the Corporation.

                  Section  13.  If  required  by the  board  of  directors,  the
treasurer  shall give the  Corporation  a bond (which shall be renewed every six
years) in such sum and with such surety or sureties as shall be  satisfactory to
the board of directors for the faithful  performance of the duties of his office
and for the restoration to the Corporation,  in case of his death,  resignation,
retirement or removal from office,  of all books,  papers,  vouchers,  money and
other property of whatever kind in his possession or under his control belonging
to the Corporation.

                  Section 14. The assistant treasurer, or if there shall be more
than one,  the  assistant  treasurers  in the order  determined  by the board of
directors  (or if there  be no such  determination,  then in the  order of their
election),  shall,  in the  absence  of the  treasurer  or in the  event  of his
inability  or refusal to act,  perform the duties and exercise the powers of the
treasurer  and shall perform such other duties and have such other powers as the
board of directors may from time to time prescribe.

                                   ARTICLE VI
                              CERTIFICATE OF STOCK

                  Section 1. Every holder of shares of stock of the  Corporation
shall  be  entitled  to have a  certificate,  signed  by,  or in the name of the
Corporation  by, the chairman of the board of  directors,  or the president or a
vice-president and the treasurer or an assistant treasurer,  or the secretary or
an assistant secretary of the Corporation, certifying the number of shares owned
by him in the Corporation.

                  Section 2. Any of or all the signatures on the certificate may
be facsimile. In case any officer, transfer agent or registrar who has signed or
whose facsimile  signature has been placed upon a certificate  shall have ceased
to be such  officer,  transfer  agent or registrar  before such  certificate  is
issued,  it may be issued by the Corporation  with the same effect as if he were
such officer, transfer agent or registrar at the date of issue.

                                LOST CERTIFICATES

                  Section 3. The board of directors may direct a new certificate
or  certificates  to be  issued  in place  of any  certificate  or  certificates
theretofore  issued by the  Corporation  alleged  to have been  lost,  stolen or
destroyed,  upon the making of an affidavit of that fact by the person  claiming
the certificate of stock to be lost, stolen or destroyed.  When authorizing such
issue of a new certificate or  certificates,  the board of directors may, in its
discretion  and as a condition  precedent to the issuance  thereof,  require the
owner of such lost,  stolen or destroyed  certificate  or  certificates,  or his
legal  representative,  to advertise the same in such manner as it shall require
and/or to give the  Corporation a bond in such sum as it may direct as indemnity
against any claim that may be made against the  Corporation  with respect to the
certificate alleged to have been lost, stolen or destroyed.




                                       -8-

<PAGE>



                               TRANSFERS OF STOCK

                  Section 4. Upon  surrender to the  Corporation or the transfer
agent  of  the  Corporation  of  a  certificate  for  shares  duly  endorsed  or
accompanied  by proper  evidence of  succession,  assignation  or  authority  to
transfer,  it shall be the duty of the Corporation to issue a new certificate to
the  person  entitled  thereto,  cancel  the  old  certificate  and  record  the
transaction upon its books.

                               FIXING RECORD DATE

                  Section 5. In order that the  Corporation  may  determine  the
stockholders  entitled to notice of or to vote at any meeting of stockholders or
any adjournment  thereof,  or to express consent to corporate  action in writing
without a meeting,  or  entitled  to receive  payment of any  dividend  or other
distribution  or allotment of any rights,  or entitled to exercise any rights in
respect of any change, conversion or exchange of stock or for the purpose of any
other lawful action,  the board of directors may fix, in advance, a record date,
which  shall be not more than  sixty nor less than ten days  before  the date of
such  meetings,  nor  more  than  sixty  days  prior  to  any  other  action.  A
determination  of  stockholders  of record entitled to notice of or to vote at a
meeting of stockholders shall apply to any adjournment of the meeting; provided,
however, that the board of directors may fix a new record date for the adjourned
meeting.

                             REGISTERED STOCKHOLDERS

                  Section 6. The Corporation  shall be entitled to recognize the
exclusive  right of a person  registered  on its books as the owner of shares to
receive  dividends,  and to vote as such owner, and to hold liable for calls and
assessments a person  registered on its books as the owner of shares,  and shall
not be bound to  recognize  any  equitable or other claim to or interest in such
share or shares on the part of any other  person,  whether  or not it shall have
express or other notice thereof, except as otherwise provided by law.

                                   ARTICLE VII
                               GENERAL PROVISIONS
                                    DIVIDENDS

                  Section 1. Dividends upon the capital stock of the Corporation
subject to the provisions of the  certificate of  incorporation,  if any, may be
declared by the board of directors at any regular or special  meeting,  pursuant
to law. Dividends may be paid in cash, in property,  or in shares of the capital
stock, subject to the provisions of the certificate of incorporation.

                  Section 2. Before  payment of any  dividend,  there may be set
aside out of any funds of the  Corporation  available for dividends  such sum or
sums as the directors  from time to time,  in their  absolute  discretion,  deem
proper  as a  reserve  or  reserves  to meet  contingencies,  or for  equalizing
dividends,  or for repairing or maintaining any property of the Corporation,  or
for such


                                       -9-

<PAGE>



other  purpose as the  directors  shall deem  conducive to the  interests of the
Corporation,  and the  directors  may modify or abolish any such  reserve in the
manner in which it was created.

                                ANNUAL STATEMENT

                  Section 3. The board of directors shall present at each annual
meeting,  and at any special meeting of the stockholders when called for by vote
of the stockholders, a full and clear statement of the business and condition of
the Corporation.

                                     CHECKS

                  Section 4. All  checks or  demands  for money and notes of the
Corporation  shall be signed by such officer or officers or such other person or
persons as the board of directors may from time to time designate.

                                   FISCAL YEAR

                  Section 5. The fiscal year of the  Corporation  shall be fixed
by resolution of the board of directors.

                                      SEAL

                  Section 6. The corporate seal shall have inscribed thereon the
name of the  Corporation,  the year of its organization and the words "Corporate
Seal, Delaware". The seal may be used by causing it or a facsimile thereof to be
impressed or affixed or reproduced or otherwise.

                                  ARTICLE VIII
                                   AMENDMENTS

                  Section 1. Except as otherwise  provided in the certificate of
incorporation,  these  Bylaws,  or  any of  them,  may be  altered,  amended  or
repealed,  or new By-laws may be made, at any annual or special meeting,  by the
stockholders  having at least 67% of the total voting power of the  Corporation,
or at any  regular or special  meeting of the Board of  Directors,  by vote of a
majority of the whole Board. By-laws made, altered or amended by the Board shall
be subject to  alteration,  amendment  or repeal by the  stockholders  having at
least 67% of the total voting power of the Corporation.

                                   ARTICLE IX
                                 INDEMNIFICATION

                  Section 1. The Corporation  shall indemnify any person who was
or is a party or is threatened to be made a party to any threatened,  pending or
completed action, suit or proceeding, whether civil, criminal, administrative or
investigative  (other than an action by or in the right of the  Corporation)  by
reason  of the  fact  that he is or was or has  agreed  to  become  a  director,
officer,

                                      -10-

<PAGE>


employee  or agent of the  Corporation,  or is or was  serving  or has agreed to
serve at the  request of the  Corporation  as a director,  officer,  employee or
agent  of  another  corporation,  partnership,  joint  venture,  trust  or other
enterprise,  or by reason of any action alleged to have been taken or omitted in
such capacity,  against costs,  charges,  expenses (including  attorneys' fees),
judgments, fines and amounts paid in settlement actually and reasonably incurred
by him or on his behalf in connection  with such action,  suit or proceeding and
any appeal  therefrom,  if he acted in good faith and in a manner he  reasonably
believed  to be in, or not opposed to, the best  interests  of the  Corporation,
and, with respect to any criminal action or proceeding,  had no reasonable cause
to believe his conduct was  unlawful.  The  termination  of any action,  suit or
proceeding by judgment,  order, settlement,  conviction,  or upon a plea of nolo
contendere or its equivalent,  shall not, of itself,  create a presumption  that
the  person  did not act in good  faith  and in a  manner  which  he  reasonably
believed to be in, or not opposed to, the best interests of the Corporation and,
with respect to any  criminal  action or  proceeding,  had  reasonable  cause to
believe that his conduct was unlawful.

                  Section 2. The Corporation  shall indemnify any person who was
or is a party or is threatened to be made a party to any threatened,  pending or
completed  action or suit by or in the  right of the  Corporation  to  procure a
judgment  in its favor by reason of the fact that he is or was or has  agreed to
become a director,  officer, employee or agent of the Corporation,  or is or was
serving or has agreed to serve at the request of the  Corporation as a director,
officer, employee or agent of another corporation,  partnership,  joint venture,
trust or other enterprise, or by reason of any action alleged to have been taken
or committed in such capacity,  against costs,  charges and expenses  (including
attorney's  fees)  actually and  reasonably  incurred by him or on his behalf in
connection  with the defense or settlement of such action or suit and any appeal
therefrom,  if he acted in good faith and in a manner he reasonably  believed to
be in, or not opposed to, the best interests of the Corporation,  except that no
indemnification  shall be made in respect  of any  claim,  issue or matter as to
which such  person  shall  have been  adjudged  to be liable to the  Corporation
unless and only to the extent  that the Court of  Chancery  of  Delaware  or the
court in which such action or suit was brought shall determine upon  application
that,  despite  the  adjudication  of  such  liability  but in  view  of all the
circumstances  of the case,  such  person is fairly and  reasonably  entitled to
indemnity  for such costs,  charges and expenses  which the Court of Chancery or
such other court shall deem proper.

                  Section  3.  Expenses  incurred  in  connection  with a civil,
criminal,  administrative or investigative action, suit or proceeding, or threat
thereof,  may be paid by the Corporation in advance of the final  disposition of
such action,  suit or proceeding  upon receipt of an undertaking by or on behalf
of the  director,  officer,  employee  or agent to repay such amount if it shall
ultimately  be  determined  that he is not  entitled  to be  indemnified  by the
Corporation as authorized in this Article.

                  Section 4. The  indemnification  and  advancement  of expenses
provided  by,  or  granted  pursuant  to,  this  Article  IX shall not be deemed
exclusive  of any  other  rights  to  which  those  seeking  indemnification  or
advancement  of expenses may be entitled  under any By-law,  agreement,  vote of
stockholders or disinterested  directors or otherwise,  both as to action in his
official  capacity  and as to action in  another  capacity  while  holding  such
office,  and shall  continue  as to a person  who has  ceased to be a  director,
officer,  employee  or agent  and  shall  inure  to the  benefit  of the  heirs,
executors, and administrators of such a person.


                                      -11-


                                                                EXHIBIT 10.34
                                                                -------------

                         EXECUTIVE EMPLOYMENT AGREEMENT


                                                     This  Executive  Employment
                                            Agreement   (the   "Agreement")   is
                                            entered into effective as of October
                                            1,  1997  (the  "Effective   Date"),
                                            between   Synaptic    Pharmaceutical
                                            Corporation   (the   "Company"),   a
                                            Delaware   corporation,    and   Dr.
                                            Kathleen    P.     Mullinix     (the
                                            "Executive").


                                    ARTICLE I

                             EMPLOYMENT OF EXECUTIVE

                  1.1.  Employment.  Subject to the terms and conditions of this
Agreement,  the Company  agrees to employ  Executive in a full time  capacity to
serve as the President and Chief Executive Officer of the Company and to perform
such specific  duties as may  reasonably  be assigned to Executive  from time to
time by the Board of Directors of the Company for the period  commencing  on the
Effective  Date,  and  terminating  four years from such  date,  unless  earlier
terminated as herein provided.  Executive hereby accepts such employment for the
term hereof.

                  1.2.  No  Conflicting   Commitments.   During  the  period  of
Executive's full time employment with the Company,  Executive will not undertake
any commitments  which might impair  Executive's  performance of her duties as a
full time employee of the Company.


                                   ARTICLE II

                                  COMPENSATION

                  For all  services to be rendered by  Executive  to the Company
pursuant to this Agreement,  the Company shall pay to Executive the compensation
and provide for Executive the benefits set forth below:

                  2.1. Base Salary. Until January 1, 1998, the Company shall pay
to  Executive  a base  salary of  $250,000  per annum,  prorated  and payable in
substantially  equal  bi-monthly  installments.  Executive's  base salary may be
increased from time to time thereafter by the Board of Directors of the Company,
in its discretion.


                                       -1-


<PAGE>



                  2.2. Bonuses.  Executive shall be eligible for a cash bonus in
an amount of $100,000 for the calendar year ending December 31, 1997, subject to
the  assessment by the  Compensation  Committee of the Board of Directors of the
achievement of the previously  agreed to criteria.  Such cash bonus,  if earned,
will be payable to Executive  within  forty-five (45) days after the end of such
calendar year.  Additional  bonuses may be approved by the Board of Directors of
the Company, in its discretion.

                  2.3. Fringe  Benefits.  In addition to Executive's base salary
and bonuses,  the Company shall provide  Executive  and  Executive's  dependents
medical insurance and such other benefits as are generally made available by the
Company to its other full time executive employees.

                  2.4. Participation in Future Equity Incentive Plans. Executive
shall be entitled to participate,  to the extent and in the manner determined by
the Board of Directors of the Company or the Compensation  Committee thereof, as
appropriate,  in its absolute discretion, in any stock option, stock purchase or
the equity incentive plans established by the Company.

                  2.5.  Reimbursement  of Expenses.  The Company shall reimburse
Executive for reasonable  business  expenses  incurred in the performance of her
duties hereunder.


                                   ARTICLE III

                                EARLY TERMINATION

                  3.1. Early Termination. Executive's employment hereunder shall
terminate  prior  to the  expiration  of the  term of this  Agreement  upon  the
occurrence of any of the following events:

                  3.1.1.   Executive's death or legal incapacity; or

                  3.1.2. The termination of Executive's  employment hereunder by
                  the Board of Directors of the  Company,  at its option,  to be
                  exercised by written  notice to  Executive,  upon  Executive's
                  other  incapacity or inability to further perform  services as
                  contemplated  herein for a period  aggregating 90 days or more
                  within any six-month  period because  Executive's  physical or
                  mental  health  shall have  become  impaired  so as to make it
                  impossible   or   impractical   to  perform   the  duties  and
                  responsibilities contemplated hereunder; or

                  3.1.3.  The  termination of Executive's  employment with Cause
                  (as defined  below) by the Board of  Directors of the Company,
                  at its option, to be exercised by written notice to Executive.
                  As used in this  Article  III,  termination  by the Company of
                  Executive's employment for "Cause" shall mean termination upon
                  (i)  the  willful  and  continued   failure  by  Executive  to
                  substantially  perform  Executive's  duties  with the  Company
                  (other  than  any  such  failure  resulting  from  Executive's
                  incapacity due to physical or mental  illness) after a written
                  demand for substantial performance is

                                       -2-


<PAGE>



                  delivered  to  Executive  by the  Board  of  Directors  of the
                  Company,   which   specifically   and  in  reasonable   detail
                  identifies the manner in which the Board of Directors believes
                  that  Executive has not  substantially  performed  Executive's
                  duties,  (ii) the willful  engaging by Executive in misconduct
                  which is  materially  injurious to the Company,  monetarily or
                  otherwise or (iii) Executive's conviction of a felony; or

                  3.1.4. The termination of Executive's  employment hereunder by
                  the Board of Directors of the Company, at its option,  without
                  Cause,  to be exercised  by delivery of 90 days prior  written
                  notice from the Company to Executive; or

                  3.1.5. The termination of Executive's  employment hereunder by
                  Executive other than for Good Reason (as defined below), to be
                  exercised  by  delivery of 90 days prior  written  notice from
                  Executive to the Company; or

                  3.1.6. The termination of Executive's  employment hereunder by
                  Executive  for Good Reason,  to be exercised by delivery of 90
                  days prior written  notice from  Executive to the Company.  As
                  used  in  this  Article  III,   termination  by  Executive  of
                  Executive's  employment  for  "Good  Reason"  shall  mean  (a)
                  termination  by Executive  within 180 days following and based
                  on any of the  following  events  if  any  such  event  occurs
                  without Executive's prior written consent:

                                    (i)  the  assignment  to  Executive  of  any
                           duties   inconsistent   with  Executive's   position,
                           duties,   responsibilities   and  status  within  the
                           Company  or  any  change  in  Executive's   reporting
                           responsibilities, titles or offices which constitutes
                           a demotion;

                                    (ii)  any   reduction   by  the  Company  in
                           Executive's   base  salary  or  any   termination  of
                           Executive's  participation  in any  bonus  plan as in
                           effect  on the  Effective  Date or as the same may be
                           increased or in effect from time to time;

                                    (iii) the Company's  requiring  Executive to
                           be  based  anywhere  other  than  within  30 miles of
                           Executive's  present  office  location,   except  for
                           required  travel  on  the  Company's  business  to an
                           extent  substantially   consistent  with  Executive's
                           present business travel obligations; and

                                    (iv) any material  breach of the  provisions
                           of this  Agreement  by the Company  (including  those
                           outlined  above),  which is not cured  within 30 days
                           after  written  notice from  Executive to the Company
                           identifying   such   breach  and   stating   that  it
                           constitutes  "Good  Reason" under this Article III or
                           which is not  commenced  to be  cured  by  reasonable
                           measures  within  such  period  if a full cure is not
                           possible within 30 days; or


                                       -3-


<PAGE>



                  (b)  termination  by Executive  with the express prior written
                  consent of the Board of Directors of the Company.

                  3.2.  Adjustments Upon Early  Termination.  Subject to Section
3.3,  notwithstanding  any other  provision  in this  Agreement  or in any stock
option agreement or restricted stock purchase  agreement  between  Executive and
the Company to the contrary:

                  3.2.1. If Executive's  employment with the Company  terminates
                  pursuant  to Section  3.1.1 or 3.1.2.,  (a) all  payments  and
                  benefits  provided to  Executive  under this  Agreement  shall
                  cease as of the date of  termination of employment and (b) all
                  stock  options and  restricted  stock in the  Company  held by
                  Executive on that date shall become immediately exercisable or
                  vest, as the case may be, on that date,  and all stock options
                  shall continue to be  exercisable  for 120 days from such date
                  or for such longer period as their terms may provide.

                  3.2.2. If Executive's  employment with the Company  terminates
                  pursuant  to Section  3.1.3,  (a) all  payments  and  benefits
                  provided to Executive under this Agreement  shall  immediately
                  cease to accrue as of the date of  termination  of  employment
                  and  (b)  all  further   vesting  of  all  stock  options  and
                  restricted stock in the Company held by Executive on that date
                  shall  immediately  cease  as of the  date of  termination  of
                  employment  and   thereafter   such  stock  options  shall  be
                  exercisable  and such  restricted  stock  shall be  subject to
                  repurchase by the Company in accordance with their  respective
                  terms.

                  3.2.3. If Executive's  employment with the Company  terminates
                  pursuant  to  Section  3.1.4 or 3.1.6,  (a) all  payments  and
                  benefits  provided to  Executive  under this  Agreement  shall
                  continue  for 12  months  after  the  date of  termination  of
                  employment and (b) all stock options and  restricted  stock in
                  the Company held by Executive  on the date of  termination  of
                  employment  shall become  immediately  exercisable or vest, as
                  the case may be, on that  date,  and all stock  options  shall
                  continue to be exercisable  for 120 days from such date or for
                  such longer period as their terms may provide.

                  3.2.4. If Executive's  employment with the Company  terminates
                  pursuant to Section  3.1.5.,  (a) all  payments  and  benefits
                  provided to Executive  under this Agreement shall continue for
                  9 months after the date of  termination  of employment and (b)
                  all further vesting on all stock options and restricted  stock
                  in  the  Company   held  by   Executive  on  that  date  shall
                  immediately  cease as of the date of termination of employment
                  and  thereafter  such stock options shall be  exercisable  and
                  such  restricted  stock shall be subject to  repurchase by the
                  Company in accordance with their respective terms.

                  This   Section  3.2  is  intended  to  override   inconsistent
provisions of any other option or stock purchase agreement entered into prior to
the date of actual execution of this Agreement.


                                       -4-

<PAGE>



                  3.3.   Special  Rules  Regarding   Continuation  of  Benefits.
Notwithstanding  anything contained in Section 3.2 to the contrary,  the Company
shall not be required upon Executive's termination of employment to continue any
benefits  under  any  plan,   program  or  arrangement  of  the  Company  unless
Executive's continued  participation therein is possible under the general terms
and  provisions  of  such  plan,  program  or  arrangement.  In the  event  that
Executive's  participation in any such plan, program or arrangement is barred or
in the event any medical condition  covered by any plan,  program or arrangement
of the  Company  is not  covered  by a plan,  program  or  arrangement  of a new
employer,   the  Company  shall  arrange  to  provide  Executive  with  benefits
substantially  similar to those  which  Executive  would have been  entitled  to
receive under such plan,  program or  arrangement  pursuant to the provisions of
Section 3.2, upon Executive's request and at Executive's expense.

                  3.4.  No Duty to  Mitigate.  Executive  shall be  required  to
mitigate  the amount of any  payment  provided  for in Section  3.2.4 by seeking
other employment, and any payment or benefit provided for in Section 3.2.4 shall
be reduced by  compensation  earned by Executive as the result of  employment by
another employer after the date of termination.  Executive shall not be required
to mitigate the amount of any payment  provided for in Section  3.2.3 by seeking
other employment or otherwise, and no payment or benefit provided for in Section
3.2.3  shall be reduced by  compensation  earned by  Executive  as the result of
employment by another employer after the date of termination; provided, however,
that in the event Executive commences employment with a new employer at any time
during which she is entitled to receive  payments  and/or  benefits  pursuant to
Section  3.2.3,  then (a) the aggregate  amount of any remaining  payments which
Executive would otherwise be entitled to receive  pursuant to any such provision
shall be paid to Executive in a single lump sum within two weeks  following  the
Company's  receipt  of  notice  from  Executive  of  her  commencement  of  such
employment and (b) all benefits which  Executive  would otherwise be entitled to
receive  pursuant  to any  such  provision  shall  cease  as of the  date of her
commencement  of such  employment  or, in the case of life  insurance,  medical,
health and accident insurance,  and disability plans,  programs or arrangements,
as soon thereafter as Executive  becomes  eligible to participate in such plans,
programs or arrangements of her new employer.

                                   ARTICLE IV

                        CHANGE OF CONTROL OF THE COMPANY

                  4.1.  Change  in  Control   Defined.   For  purposes  of  this
Agreement,  a "change in control of the Company"  shall mean a change in control
of the  Company of a nature that would be required to be reported in response to
Item 1 of Form 8-K  promulgated  under the  Securities  Exchange Act of 1934, as
amended  ("Exchange  Act") if the  Company  were at that  time  subject  to such
reporting  requirements of the Exchange Act; provided that, without  limitation,
such a change in control  shall be deemed to have  occurred if (i) any  "person"
(as such term is used in  Sections  13(d) and 14(d) of the  Exchange  Act) is or
becomes the  "beneficial  owner" (as  defined in Rule 13d-3  under the  Exchange
Act), directly or indirectly,  of securities of the Company  representing 35% or
more of the combined voting power of the Company's then outstanding  securities;
or (ii)  during  any period of two  consecutive  years,  individuals  who at the
beginning of such period constitute the Board of

                                       -5-


<PAGE>



Directors of the Company  cease for any reason to constitute at least a majority
thereof  unless the election,  or the  nomination  for election by the Company's
stockholders, of each new director was approved by a vote of at least two-thirds
of the  directors of the Company then still in office who were  directors at the
beginning of the period.

                  4.2. Termination of Employment Following Change in Control. If
any of the events  defined in Section 4.1. to  constitute a change in control of
the Company  shall have  occurred,  Executive  shall be entitled to the benefits
provided in Section 4.3.  hereof upon the subsequent  termination of Executive's
employment  unless  such  termination  is (a)  because of  Executive's  death or
Retirement, (b) by the Company for Cause or (c) by Executive other than for Good
Reason.

                  4.2.1.  Retirement.  Termination by the Company of Executive's
                  employment  based on  "Retirement"  shall mean  termination in
                  accordance  with the Company's  retirement  policy,  including
                  early  retirement,   generally   applicable  to  its  salaried
                  employees.

                  4.2.2.  Cause. As used in this Article IV,  termination by the
                  Company  of  Executive's  employment  for  "Cause"  shall mean
                  termination  upon (i) the  willful  and  continued  failure by
                  Executive to substantially perform Executive's duties with the
                  Company   (other  than  any  such   failure   resulting   from
                  Executive's  incapacity  due to  physical  or mental  illness)
                  after  a  written  demand  for   substantial   performance  is
                  delivered  to  Executive  by the  Board  of  Directors  of the
                  Company,   which   specifically   and  in  reasonable   detail
                  identifies the manner in which the Board of Directors believes
                  that  Executive has not  substantially  performed  Executive's
                  duties,  (ii) the willful  engaging by Executive in misconduct
                  which is  materially  injurious to the Company,  monetarily or
                  otherwise or (iii) Executive's conviction of a felony.

                  4.2.3. Good Reason. As used in this Article IV, termination by
                  Executive of  Executive's  employment  for "Good Reason" shall
                  mean termination based on:

                           (i) subsequent to a change in control of the Company,
                           and without Executive's express written consent,  the
                           assignment  to Executive  of any duties  inconsistent
                           with Executive's position,  duties,  responsibilities
                           and status within the Company  immediately prior to a
                           change  in  control,   or  a  change  in  Executive's
                           reporting  responsibilities,  titles or offices as in
                           effect  immediately prior to a change in control,  or
                           any  removal  of  Executive  from or any  failure  to
                           re-elect Executive to any of such positions or to the
                           Board  of   Directors   of  the  Company   except  in
                           connection   with  the   termination  of  Executive's
                           employment  for Cause or Retirement or as a result of
                           Executive's death or by Executive other than for Good
                           Reason;

                           (ii)  subsequent  to  a  change  in  control  of  the
                           Company,  a reduction  by the Company in  Executive's
                           base   salary  or  a   termination   of   Executive's
                           participation  in any bonus  plan as in effect on the
                           date  hereof  or as the same may be  increased  or in
                           effect from time to time;

                                       -6-


<PAGE>



                           (iii)  subsequent  to a  change  in  control  of  the
                           Company,  and  without  Executive's  express  written
                           consent,  the  Company's  requiring  Executive  to be
                           based   anywhere   other  than  within  30  miles  of
                           Executive's  present  office  location,   except  for
                           required  travel  on  the  Company's  business  to an
                           extent  substantially   consistent  with  Executive's
                           present business travel obligations;

                           (iv)  subsequent  to  a  change  in  control  of  the
                           Company,  the  failure by the  Company to continue in
                           effect, or to continue Executive's  participation in,
                           any  benefit or  compensation  plan,  life  insurance
                           plan,  health-and-accident plan or disability plan in
                           which  Executive  is  participating  at the time of a
                           change in control of the Company (or plans  providing
                           Executive with substantially  similar benefits),  the
                           taking  of any  action  by the  Company  which  would
                           adversely  affect  Executive's  participation  in  or
                           materially reduce  Executive's  benefits under any of
                           such  plans  or  deprive  Executive  of any  material
                           fringe  benefit  enjoyed by  Executive at the time of
                           the change in control,  or the failure by the Company
                           to provide Executive with the number of paid vacation
                           days  to  which   Executive   is  then   entitled  in
                           accordance with the Company's  normal vacation policy
                           in effect on the date hereof;

                           (v) subsequent to a change in control of the Company,
                           the failure by the  Company to obtain the  assumption
                           of the  agreement  to perform  this  Agreement by any
                           successor as contemplated in Section 8.4 hereof; or

                           (vi)  subsequent  to  a  change  in  control  of  the
                           Company, any material breach of this Agreement by the
                           Company  (including those outlined  above),  which is
                           not cured  within 30 days after  written  notice from
                           Executive to the Company  identifying such breach and
                           stating that it constitutes  "Good Reason"  hereunder
                           or  is  not  commenced  to  be  cured  by  reasonable
                           measures  within  such  period  if a full cure is not
                           possible within 30 days.

                  4.2.4. Notice of Termination. Any purported termination by the
                  Company  pursuant to Section 4.2.1.  or 4.2.2. or by Executive
                  pursuant to Section 4.2.1. or 4.2.3.  shall be communicated by
                  written Notice of  Termination to the other party hereto.  For
                  purposes of this Agreement,  a "Notice of  Termination"  shall
                  mean a notice which shall  indicate  the specific  termination
                  provision in this Agreement relied upon and shall set forth in
                  reasonable  detail  the facts  and  circumstances  claimed  to
                  provide  a basis for  termination  of  Executive's  employment
                  under the provision so indicated.

                  4.2.5. Date of Termination.  "Date of Termination"  shall mean
                  (i) if  Executive's  employment is terminated  for Cause,  the
                  date  specified  in the  Notice  of  Termination,  and (ii) if
                  Executive's employment is terminated for any other reason, the
                  date on which a Notice of Termination is given;  provided that
                  if within 30 days after any Notice of Termination is given the
                  party receiving such Notice of Termination  notifies the other
                  party that a dispute exists  concerning the  termination,  the
                  Date of

                                       -7-


<PAGE>



                  Termination  shall be the date on which the dispute is finally
                  determined, either by mutual written agreement of the parties,
                  by a  binding  and  final  arbitration  award  or  by a  final
                  judgment, order or decree of a court of competent jurisdiction
                  entered  upon such  arbitration  award  (the  time for  appeal
                  therefrom having expired and no appeal having been perfected).

                  4.3. Certain Benefits Upon Termination.  If, after a change in
control of the Company shall have  occurred,  as defined in Section 4.1.  above,
Executive's  employment by the Company  shall be  terminated  (a) by the Company
other than for Cause or  Retirement  or (b) by Executive  for Good Reason,  then
Executive shall be entitled to the benefits provided below:

                           4.3.1.  Payment of Back Salary. The Company shall pay
         Executive  Executive's full base salary through the Date of Termination
         at the rate in effect at the time Notice of  Termination  is given plus
         credit for any vacation earned but not taken and the amount, if any, of
         any bonus for a past fiscal year which has not yet been awarded or paid
         to Executive under the Company's bonus plans;

                           4.3.2. Payment of Future Salary. Until the end of the
         12th  calendar  month  following the Date of  Termination,  the Company
         shall  continue to pay  Executive  monthly  Executive's  base salary in
         effect on the Date of Termination;

                           4.3.3.  Continuation  of Benefits.  The Company shall
         maintain in full force and effect,  for Executive's  continued  benefit
         until the earlier of (a) the end of the 12th calendar  month  following
         the Date of Termination or (b)  Executive's  commencement  of full time
         employment with a new employer, all life insurance, medical, health and
         accident insurance,  and disability plans,  programs or arrangements in
         which  Executive was entitled to participate  immediately  prior to the
         Date of Termination,  provided that Executive's continued participation
         is possible  under the general  terms and  provisions of such plans and
         programs. In the event that Executive's  participation in any such plan
         or program is barred or in the event any medical  condition  covered by
         any  plan or  program  of the  Company  is not  covered  by the plan or
         program  of a new  employer,  the  Company  shall  arrange  to  provide
         Executive with benefits  substantially similar to those which Executive
         was entitled to receive under such plans and programs,  at  Executive's
         expense;

                           4.3.4.  Vesting  of Stock  Options,  Etc.  All  stock
         options,  stock bonus awards and  restricted  stock grants  relating to
         securities of the Company held by Executive on the Date of  Termination
         shall  vest or become  exercisable,  as the case may be, on the Date of
         Termination,  notwithstanding any provisions in any such stock options,
         stock bonus awards or restricted stock grants to the contrary,  and all
         rights to exercise stock options shall remain  exercisable by Executive
         for a period of not less than 120 days after the Date of Termination.

                  If  the  benefits  payable  hereunder,   together  with  other
payments in the nature of  compensation  to or with respect to Executive,  would
otherwise  be subject to the excise  taxes  imposed  under  Section  280G of the
Internal Revenue Code of 1986, as amended ("Code"), and if the net value

                                       -8-

<PAGE>



of such benefits and payments in the nature of compensation, after reduction for
such taxes, is less than the aggregate value of the benefits and payments in the
nature of compensation  determined as if such amounts had been $1.00 less than a
maximum amount which could be paid without  imposition of excise taxes, then the
benefits  payable  hereunder  shall be reduced to highest  amount such that such
excise  taxes  shall not be imposed  with  respect to the  benefits or the other
payments in the nature of compensation. It is the intention of this provision to
reduce benefits  payable  hereunder only if the Executive would be in a superior
position  taking into account such excise taxes than if such payments were made,
and such reduction  shall,  in any event,  be the least amount in order that the
Executive  be better off with the  reduction  than  before such  reduction.  The
calculation of the value of benefits payable hereunder and other payments in the
nature of compensation,  and the implications of the excise tax rules of Section
280G of the Code,  shall be  determined  by the  Company in good faith  based on
written advice of a national accounting firm.

                  4.4. No Duty to Mitigate.  Executive  shall not be required to
mitigate the amount of any payment  provided for in Section 4.3 by seeking other
employment or otherwise,  and no payment or benefit provided for in Section 4.3.
shall be reduced by compensation earned by Executive as the result of employment
by another employer after the Date of Termination, or otherwise.


                                    ARTICLE V

                 COVENANTS AGAINST COMPETITION WITH THE COMPANY

                  5.1.  Non-solicitation  of  Employees.  Executive  agrees that
during the term of Executive's  employment  with the Company and for a period of
two years after the  termination of Executive's  employment with the Company for
any reason,  Executive  shall not  directly or  indirectly  recruit,  solicit or
otherwise  induce or attempt to induce any employees of the Company to leave the
employment of the Company.

                  5.2. Non-competition. Executive agrees that during the term of
Executive's  employment with the Company and for a period of two years after the
termination of Executive's employment with the Company for any reason, Executive
shall not directly or indirectly,  except as a passive investor in publicly held
companies  and  except  for  investments  held at the  date  hereof,  engage  in
competition with the Company or any of its  subsidiaries,  or own or control any
interest in, or act as director,  officer or employee of, or consultant  to, any
firm,  corporation or institution  directly or indirectly engaged in competition
with the Company or any of its subsidiaries; provided, however, that such period
shall be reduced to six months if the Executive was terminated  without Cause by
the Company or by the Executive for Good Reason after a change of control.



                                       -9-

<PAGE>



                                   ARTICLE VI

                            CONFIDENTIAL INFORMATION

                  6.1.  Maintenance of  Confidentiality.  Executive  agrees that
Executive  will not  (except as required  in the course of  employment  with the
Company),  both during the term of Executive's  employment  with the Company and
thereafter, communicate or divulge to, or use for Executive's own benefit or the
benefit  of any  other  person,  firm  or  organization,  any  confidential  and
proprietary information of the Company and its subsidiaries.

                  6.2. Ownership of Confidential  Information.  Records,  files,
memoranda,  reports, price lists, customer lists, drawings,  plans, sketches and
documents and the like, relating to the business of the Company, which Executive
shall use or prepare or come into  contact  within the course of, in  connection
with, or as a result of employment with the Company,  shall remain the Company's
sole and exclusive property.


                                   ARTICLE VII

                             OWNERSHIP OF INVENTIONS

                  7.1.   "Invention"   Defined.   As  used  in  this  Agreement,
"Invention"  means  any  invention,  discovery  or  innovation  with  regard  to
chemistry,  enzymology,  biotechnology,  genetic  engineering or recombinant DNA
technology,  whether  or not  patentable,  made,  conceived,  or first  actually
reduced to practice by  Executive,  alone or jointly with others,  in the course
of,  in  connection  with,  or as a result of  service  as an  executive  of the
Company,  including any art, method, process,  machine,  manufacture,  design or
composition of matter,  or any improvement  thereof,  or any variety of plant or
microorganism.

                  7.2. Disclosure of Inventions.  Each Invention made, conceived
or first  actually  reduced to practice by  Executive,  whether alone or jointly
with others, during the term of Executive's employment with the Company and each
Invention  made,  conceived or first actually  reduced to practice by Executive,
whether alone or jointly with others,  within one year after the  termination of
Executive's  employment  with  the  Company  which  relates  in any  way to work
performed for the Company  during the term of Executive's  employment,  shall be
promptly  disclosed in writing to the  President of the Company (or such officer
of the Company as the  President  or Board of  Directors  may  designate).  Such
report  shall be  sufficiently  complete in technical  detail and  appropriately
illustrated  by sketch or diagram  to convey to one  skilled in the art of which
the  invention  pertains,   a  clear  understanding  of  the  nature,   purpose,
operations,  and, to the extent  known,  the physical,  chemical,  biological or
electrical characteristics of the Invention.

                  7.3.  Ownership of Inventions.  Each Invention, as herein
defined, shall be the sole and exclusive property of the Company.


                                      -10-


<PAGE>



                  7.4.  Assignment  of Title.  Executive  agrees to  execute  an
assignment to the Company or its nominee of Executive's  entire right, title and
interest in and to any Invention,  without  compensation beyond that provided in
this Agreement. Executive further agrees, upon the request of the Company and at
its  expense,  that  Executive  will execute any other  instrument  and document
necessary  or  desirable  in applying  for and  obtaining  patents in the United
States and in any  foreign  country  with  respect to any  Invention.  Executive
further agrees,  whether or not Executive is then an employee of the Company, to
cooperate to the extent and in the manner reasonably requested by the Company in
the  prosecution  or  defense  of any  claim  involving  a patent  covering  any
Invention or any litigation or other claim or proceeding involving any Invention
covered  by  this  Agreement,  but all  expenses  thereof  shall  be paid by the
Company.


                                  ARTICLE VIII

                                  MISCELLANEOUS

                  8.1.  Counterparts.  This  Agreement may be executed in one or
more counterparts,  each of which shall be deemed an original,  and all of which
together shall be deemed to be one and the same instrument.

                  8.2. Binding Effect. This Agreement shall inure to the benefit
of and be binding upon the parties hereto and their respective lawful successors
and assigns and upon Executive's heirs and personal representatives.

                  8.3. Assignment.  Except as otherwise provided in Section 8.4,
neither  this  Agreement  nor any  rights  or  obligations  hereunder  shall  be
assignable by either party hereto without the prior written consent of the other
party.

                  8.4. Obligation of the Company's Successors.  Any successor to
substantially  all of the  Company's  assets  and  business,  whether by merger,
consolidation,  purchase of assets or otherwise, shall succeed to the rights and
obligations  of the  Company  hereunder.  The  Company  will  require  any  such
successor,  by agreement in form and substance  satisfactory  to  Executive,  to
expressly  assume and agree to perform this  Agreement in the same manner and to
the same  extent  that the  Company  would be  required to perform it if no such
succession had taken place.  The failure of the Company to obtain such agreement
prior to the  effectiveness  of any such  succession  shall be a breach  of this
Agreement and shall entitle  Executive to  compensation  from the Company or its
successor  in the same  amount  and on the  same  terms  as  Executive  would be
entitled hereunder if Executive had terminated  Executive's  employment for Good
Reason following a change in control of the Company, except that for purposes of
implementing  the  foregoing,  the date on which  any  such  succession  becomes
effective shall be deemed the Date of Termination.

                  8.5.  Notices.  All notices, requests, demands and other
communications to be given pursuant to this Agreement shall be in writing and
shall be deemed to have been duly given if

                                      -11-


<PAGE>



delivered by hand or mailed by  registered  or certified  mail,  return  receipt
requested, postage prepaid, as follows:

                  If to the Company, to:

                  Synaptic Pharmaceutical Corporation
                  215 College Road
                  Paramus, New Jersey  07652
                  Attention:  President

                  If to Executive, to:

                  Dr. Kathleen P. Mullinix
                  975 Park Avenue, Apt. 2D
                  New York, New York  10028

or such other address as either party hereto shall have  designated by notice in
writing to the other party.

                  8.6.  Amendments.  This Agreement may be amended, supplemented
or otherwise modified at any time, but only by an instrument in writing signed
by the parties hereto.

                  8.7.  Governing  Law. This  Agreement and the legal  relations
among the parties  hereto shall be governed by and construed in accordance  with
the laws of New Jersey.

                  8.8. Severability. In case any provision hereof shall, for any
reason,  be held to be invalid or unenforceable in any respect,  such invalidity
or  unenforceability  shall not  affect  any other  provision  hereof,  and this
Agreement shall be construed as if such invalid or  unenforceable  provision had
not been included herein. If any provision hereof shall, for any reason, be held
by a court to be excessively broad as to duration,  geographical scope, activity
or subject matter,  it shall be construed by limiting and reducing it to make it
enforceable to the extent compatible with applicable law as then in effect.

                  8.9.  Equitable  Relief.  Articles  5,  6,  and  7  constitute
independent covenants,  which shall be enforceable  notwithstanding any right or
remedy that the Corporation may have under any other provision of this Agreement
or  otherwise.  The  parties  agree that the remedy at law for any breach of any
such  section  will be  inadequate  and the  Company,  in  addition to all other
remedies,  shall be entitled to a preliminary injunction to restrain such breach
prior to the trial of any issue and to temporary and permanent injunction relief
without the necessity of proving damages.

                  8.10.  Survival.  Articles  5,  6  and  7  shall  survive  the
termination  of this  Agreement  for the  periods of time  indicated  therein or
indefinitely if no period is indicated.



                                      -12-

<PAGE>


                  IN WITNESS  WHEREOF,  the  undersigned  have duly executed and
delivered this Agreement as of the date first above written.

                                      SYNAPTIC PHARMACEUTICAL CORPORATION


                                      By: /s/ Lisa L. Reiter
                                          -----------------------
                                       Name:  Lisa L. Reiter
                                       Title: VP, General Counsel & Secretary


                                      EXECUTIVE


                                      /s/ Kathleen P. Mullinix
                                      ------------------------
                                      Kathleen P. Mullinix


                                      -13-

                                                                EXHIBIT 10.35
                                                                -------------

                                    AGREEMENT

                                     BETWEEN

                                CENTURY ASSOCIATE
                                   ("CENTURY")

                                       AND

                       SYNAPTIC PHARMACEUTICAL CORPORATION


         THIS   AGREEMENT   is  made   and   entered   into   this 19th day  of
November,  1997 (but shall be  effective  as of the  Effective  Date,  as herein
defined,  for all purposes),  by and between  Century  Associates,  a New Jersey
partnership,  having an address c/o Sun Chemical,  222 Bridge Plaza South,  Fort
Lee,  New Jersey  07024  (hereinafter  sometimes  referred to as  "Century"  and
sometimes referred to as "Sublessor") and Synaptic Pharmaceutical Corporation, a
Delaware corporation, having an address at 215 College Road, Paramus, New Jersey
(hereinafter  sometimes  referred to as "Synaptic" and sometimes  referred to as
"Sublessee").

         WITNESSETH:

         WHEREAS,  Century is the fee simple owner of the real property  located
at 215 College Road, Paramus, New Jersey 07652, and more particularly  described
in Schedule A attached hereto and made a part hereof ("Land"), together with the
buildings and other improvements located thereon ("Improvements") (such Land and
Improvements, collectively, "Paramus Facility");

         WHEREAS,  Century is also the Landlord  under certain lease  agreements
and  amendments  thereto  listed on  Schedule B attached  hereto and made a part
hereof (collectively, "Overlease");

         WHEREAS,  International  Playtex Corporation and International  Playtex
Company,  as  successor  to  International  Playtex  Corporation  (collectively,
"Playtex") was the tenant under the Overlease;

         WHEREAS, Playtex Apparel, Inc. ("Apparel"), as assignee of Playtex, was
the  sublessor  under a certain  Sublease  with  Neurogenetic  Corporation,  the
sublessee  thereunder,  dated October 31, l991, as amended by that certain First
Sublease Amendment, dated August, 1994 ("Sublease Amendment") (said Sublease and
Sublease Amendment, collectively, the "Sublease") pursuant to which Neurogenetic
Corporation leased space in the Improvements, more particularly described in the
Sublease ("Demised Premises");

         WHEREAS, Synaptic is successor in interest to Neurogenetic
Corporation as sublessee under the Sublease;

                                       1

<PAGE>


         WHEREAS,   the  Term  of  the  Overlease   expires  December  31,  1999
("Expiration  Date")  and it is  anticipated  that  the  Overlease  will  not be
extended and, accordingly,  Century is negotiating with Apparel to terminate the
Overlease  prior to the  Expiration  Date and to have Apparel  assign to Century
Apparel's interest in the Sublease;

         WHEREAS, upon such assignment, Century and Synaptic desire to amend the
Sublease  for the  Premises  in certain  respects  as well as to provide for the
lease of certain  additional  space in the Improvements as such additional space
becomes available for lease;

         WHEREAS,  Synaptic has operated pursuant to the terms and provisions of
the Sublease  since  October 1991 and is desirous of  continuing to do so to the
extent such terms and provisions may continue to apply to its respective  rights
and  obligations,  as same may be  amended by the terms and  provisions  of this
Agreement and,  accordingly Century and Synaptic each agree and acknowledge that
it is their  respective  intent and desire  that,  notwithstanding  the  earlier
termination of the Overlease, the Sublease will remain in full force and effect,
as hereby amended, as a direct lease between Century and Synaptic, the terms and
provisions of the Sublease,  as amended by this Agreement,  shall constitute the
terms and  provisions  of a direct  lease  between  Century and  Synaptic  (such
Sublease,  as amended  by this  Agreement,  "Lease");  Century  will  become the
successor to Apparel as Sublessor  under the Sublease and Synaptic will continue
to be the  Sublessee  and,  notwithstanding  such  designation  as Sublessor and
Sublessee,  Century will be the  Landlord and Synaptic  will be the Tenant under
the direct Lease;

         WHEREAS,  it is also the intent of the parties  hereto that, if Century
acquires the  interest of Playtex  under the  Overlease,  no merger of Century's
positions as Landlord  and Tenant  thereunder  shall be deemed to have  occurred
and, while the Overlease  shall terminate as of the Effective Date, as such term
is hereinafter  defined, it will nevertheless remain in full force and effect as
between  Sublessor and Sublessee for the sole purpose of interpreting the rights
and obligations of the parties under the Lease as necessary;

         NOW  THEREFORE,  for good and valuable  consideration,  the receipt and
sufficiency of which is hereby acknowledged, the parties agree as follows:

         1. The recital clauses are hereby incorporated herein in full as though
set forth verbatim and at length herein.  A capitalized term used herein but not
defined herein shall have the meaning given such term in the Sublease.

         2. This  Agreement  shall be  effective  on January  l,  2000,  or such
earlier date,  as  designated  by Sublessor by notice to  Sublessee,  upon which
Century  succeeds to the  interests of Apparel as sublessee  under the Overlease
and sublessor  under the Sublease  ("Effective  Date").  If the  Effective  Date
occurs before January 1, 2000, the period commencing on the Effective Date and

                                       2

<PAGE>


ending on December 31, 1999 (such period, the "Add-on Period") shall be added to
the Term. The parties hereto  acknowledge and agree that, if Apparel extends the
term of the Overlease, this Agreement shall be deemed null and void ab initio.

         3. This Agreement  modifies,  amends and supplements the Sublease.  Any
conflict  between the terms and  provisions of this  Agreement and the terms and
provisions of the Sublease  shall be controlled by the terms of this  Agreement.
In all other respects, the Sublease shall remain in full force and effect.

         4. All of the  obligations  contained in the  Overlease  conferred  and
imposed upon Sublessor (as successor of the lessee therein),  except as modified
and amended by the Lease,  are hereby  conferred and imposed upon Sublessee with
respect to the Demised  Premises.  Any rights granted to Sublessor (as successor
of the lessee  therein) are not hereby granted to Sublessee and Sublessee  shall
have only those  rights as are  specifically  set forth in the Lease.  Sublessee
covenants and agrees to fully and faithfully perform the terms and conditions of
the  Overlease  and the Lease on its part to perform with respect to the Demised
Premises.  Sublessee agrees as an express  inducement for Sublessor's  executing
this  Agreement  that,  if there is any conflict  between the  provisions of the
Lease and the provisions of the Overlease which would permit  Sublessee to do or
cause to be done or  suffer  or  permit  any act or  thing  to be done  which is
prohibited by the Overlease, then the provisions of the Overlease shall prevail,
provided  that,  notwithstanding  the  foregoing,  Paragraph 9 D of the Sublease
shall in no way be  amended  by the  foregoing.  At the  request  of  Sublessee,
Sublessor  agrees that it will use reasonable  efforts to incorporate  the terms
and provisions of the Overlease as well as the terms and provisions of the Lease
into one document.

         5.       (a)      Paragraph 1 A of the Sublease, as amended by the
Sublease Amendment, is hereby deleted and restated in its
entirety as follows:

                  "A.  "Sublessor  does hereby lease to Sublessee  and Sublessee
                  does hereby take from  Sublessor  the Demised  Premises "AS IS
                  WHERE IS" at the rent and upon the terms and conditions herein
                  stated,  for  the  Term,  as  hereinafter  defined.  When  the
                  Effective  Date occurs,  the term of the Sublease  will expire
                  and the Term of this  Lease will  commence  and such term will
                  expire,  unless sooner terminated in accordance with the terms
                  of this Lease,  at midnight on December 31, 2015  ("Expiration
                  Date") (such period from the Effective  Date to the Expiration
                  Date,  inclusive,  herein  referred to as the "Term").  If the
                  Effective  Date  occurs  on a day that is not the first day of
                  the month,  Annual Base Rent for the initial  fractional month
                  of the Term, if any, shall be prorated and paid, together with
                  the

                                       3

<PAGE>

                  first  monthly  installment  of  Annual  Base Rent due for the
                  Term.  As used  herein,  the  term  "Demised  Premises"  shall
                  include  (i) a minimum of 41,274  rentable  square feet on the
                  Effective Date, exclusive of Sublessee's pro-rata share of the
                  rentable  square feet of the Cafeteria  (such 41,274  rentable
                  square  feet  and  its  pro-rata   share  of  the   Cafeteria,
                  collectively,  the "Current Space"); (ii) the additional space
                  more particularly  described on Schedule C attached hereto and
                  made a part  hereof  currently  occupied  by Playtex  Products
                  Inc.,  which space  shall be added to the Current  Space as of
                  the day  ("Expansion  Date")  after  the day on which  Playtex
                  Products  Inc.  vacates  its space,  with the result  that the
                  Current  Space will be increased as of the  Expansion  Date to
                  73,918 rentable square feet (such 73,918 rentable square feet,
                  the "Minimum Rentable Square Feet");  and (iii) the additional
                  space  more  particularly  described  on  Schedule  D attached
                  hereto  and  made a part  hereof  as same  shall  be  added in
                  accordance with the terms of Paragraphs 35 hereof to the space
                  theretofore leased by Sublessee.

 (b) Paragraphs 1 B and
                   1 C are deleted in their
entirety.

         6. (a) Paragraph 4 A, as modified by the Sublease Amendment,  is hereby
further modified as follows:

         "From the Expansion Date,  Sublessee shall pay to Sublessor  during the
         Term a fixed basic rent per annum,  absolutely net ("Annual Base Rent")
         as follows:

                           (i) for Lease  Years  1-5,  calculated  at the annual
                           rate of $13.00 per rentable square foot [based on the
                           Minimum Rentable Square Feet, $960,934 per Lease Year
                           ($80,077.83 per month)];

                           (ii) for Lease Years 6-10,  calculated at the rate of
                           $16.00 per rentable square foot [based on the Minimum
                           Rentable  Square  Feet,  $1,182,688  per  Lease  Year
                           ($98,557.33 per month)]; and

                           (iii) for Lease Years 11-15,  calculated  at the rate
                           of $20.00  per  rentable  square  foot  [based on the
                           Minimum  Rentable  Square Feet,  $1,478,360 per Lease
                           Year ($123,196.67 per month)]; .

         "Lease Year" shall mean the period commencing on the Effective Date (or
         the first day of the month immediately  following the Effective Date if
         the  Effective  Date  is  not  the  first  day of  the  month),  or any
         anniversary  thereof  occurring during the Term, and ending on the last
         day of the

                                       4

<PAGE>


         12 month period immediately  following the date on which the Lease Year
         commenced,  or the anniversary  thereof,  as the case may be. Sublessor
         and Sublessee agree that (i) the aforesaid Annual Base Rent shall apply
         to the  Add-on  Period  and that the term  "Lease  Years  1-5" shall be
         deemed to be  increased  by the  Add-on  Period if the  Expansion  Date
         occurs  prior to  January 1, 2000;  and (ii)  notwithstanding  anything
         herein to the contrary,  from the Effective Date until the day prior to
         the Expansion Date,  Annual Base Rent and Sublessee's  percentage share
         of Operating  Costs,  but not the components of such  Operating  Costs,
         shall be as stated in the Sublease."

                  (b)  Paragraphs 4 B and 4 C are hereby deleted and Paragraph 4
B is restated in its entirety as follows:

                  "The Annual Base Rent shall be  adjusted,  as of the date such
                  space becomes  available to Sublessor for lease, by the number
                  of  rentable  square  feet of space in excess  of the  Minimum
                  Rentable Square Feet added to the Demised  Premises during the
                  Term, calculated at the annual rate then in effect pursuant to
                  Paragraph 4 A per rentable  square foot. [In no event will the
                  total rentable square feet of the Demised  Premises during the
                  Term be less than the Minimum  Rentable  Square Feet, it being
                  understood  by the parties  hereto that  Sublessor is entering
                  into this Lease on the condition  that  Sublessee be deemed to
                  have leased the Minimum  Rentable Square Feet on the Expansion
                  Date.] The parties  shall  execute and deliver a  supplemental
                  agreement  which  shall  be  attached  hereto  and made a part
                  hereof as Schedule D specifying the total rentable square feet
                  of such  added  space.  The Annual  Base Rent and  Sublessee's
                  share of  Operating  Costs  shall be  appropriately  adjusted,
                  provided,  however,  that, if Sublessee leases space in excess
                  of the Minimum  Rentable Square Feet prior to January 1, 2000,
                  the Annual Base Rent with respect to such rentable square feet
                  in  excess  of the  Minimum  Rentable  Square  Feet  shall  be
                  appropriately adjusted as of January 1, 2000."

         7.       (a)      Paragraph 5 is hereby modified to add the
                  following in line 3 before the words "Real Estate
                  Taxes":

                  "other  operating  expenses,if  any,  incurred by Sublessor in
                  maintaining,  repairing,  and replacing the Building  systems,
                  roof, structural components, public halls and stairways, smoke
                  detectors and alarm systems,  and the exterior portions of the
                  Paramus Facility,"

                                       5
<PAGE>


                  (b)      Paragraph 5(a) is deleted and restated in its
                  entirety as follows:

                  "Sublessee's  share of  Operating  Costs shall be the ratio of
                  the total  rentable  square feet of the Demised  Premises from
                  time to time to 110,666  (which is the total  rentable  square
                  feet of the  Paramus  Facility),  provided,  however,  that no
                  adjustment  shall be made which would result in a reduction of
                  Sublessee's  share of Operating Costs.  Based upon the Demised
                  Premises having the Minimum Rentable Square Feet,  Sublessee's
                  share of Operating Costs is 66.8%.  Operating Costs shall mean
                  the  actual  costs,  without  duplication,  paid  or  accrued,
                  incurred by the Sublessor during each calendar year. Sublessee
                  acknowledges and agrees that this Lease is triple net and that
                  Operating  Costs  shall  include,   without  limitation,   all
                  expenses  incurred by  Sublessor  in  maintaining  the Paramus
                  Facility,   including,   the  Cafeteria,  in  accordance  with
                  Paragraph 13 B, as well as the cost to Sublessor of hiring and
                  retaining a Building maintenance person."

                  (c)  Paragraph  5 A (b) is hereby  modified to delete the last
two sentences thereof.

         8.  Paragraph 6 A is hereby  modified to add to  following as the first
subparagraph thereof:

                  "(a) Sublessee shall be responsible for, and shall perform, at
                  its  own  cost  and  expense,   using   licensed  and  insured
                  contractors and  subcontractors,  all  alterations  within the
                  Demised  Premises,  including the construction of all demising
                  walls.  Not later  than 30 days prior to  commencing  any such
                  alterations,  Sublessee  shall obtain from its contractors and
                  subcontractors   performing  construction  activities  at  the
                  Paramus   Facility  and  deliver  to  Sublessor   evidence  of
                  insurance  coverages,  which shall be primary to the insurance
                  maintained  by  Sublessee  and  shall  name  Sublessor  as  an
                  additional   insured,   in   amounts   and  forms   reasonably
                  satisfactory to Sublessor."

and to renumber the following paragraph as "6 A(b)".

         9.  Paragraph  8 C (d)(i)  is hereby  modified  to add "to be" prior to
"paid" in line 4 thereof.

         10. Paragraphs 9E and 9F are hereby deleted in their entirety.

         11. (a) Paragraph 10 B (2) is hereby  modified to replace  "$4,000,000"
with "$5,000,000" in lines 3 and 5 thereof;

                                       6

<PAGE>


                  (b)      Paragraph 10 is hereby further modified to add the
following as new subparagraph E:

                  "E. To the maximum extent permitted by law, Sublessee
                  agrees that Sublessor shall not be responsible or
                  liable to Sublessee or to those claiming by, through or
                  under Sublessee, for any loss or damage to property of
                  Sublessee or of others that may be placed or contained
                  within the Demised Premises."

         12.  Paragraph 11 is hereby modified to replace "ten (10)" with "twelve
(12)" in line 24, and to add the following in line 27 after "Section 11A":

                  "which  right shall be exercised  by  Sublessee's  delivery to
                  Sublessor  within 30 days of the  expiration  of such 12 month
                  period of written notice of Sublessee's  irrevocable  election
                  to terminate as of the date specified in such notice, provided
                  however  that   Sublessor  may  negate  such   termination  by
                  Sublessee  by  completing  such  restoration  of  the  Demised
                  Premises within 30 days of Sublessor's  receipt of Sublessee's
                  termination notice."

         13. (a) Paragraph 12 A is hereby modified as follows:

                  In line 3 after  the word  "expense",  insert  the  following,
                  "maintain the Demised Premises in compliance with and shall".

                  (b)      Paragraph 12 B is hereby modified as follows:

                  In line 6, after the word "ECRA", add the following to the end
                  of the sentence:

                  "as amended by the  Industrial  Site Recovery Act of 1993; the
                  regulations   promulgated  thereunder  and  any  successor  or
                  amended legislation or regulations ("ISRA")."

                  and the term "ECRA" is replaced with the term "ISRA"
                  throughout Paragraph 12.

                  (c) Paragraph 12 B (ii) is hereby modified as follows:

                  In line 3, replace the word  "achieve" with the word "obtain";
                  in that same  line,  after the word  "Declaration"  insert the
                  word "Approval";  in that same line, after the word "ECRA" add
                  a comma; in line 4, delete the words  "completion of a cleanup
                  plan as defined in ECRA" and replace it with the words  "shall
                  obtain an  unconditional no further action letter from the New
                  Jersey Department of Environmental Protection";

                                       7
<PAGE>


                  and at the  end of this  paragraph  (ii),  add  the  following
                  sentence:

                  "In no event shall any cleanup by the
                  Sublessee involve the use of engineering or
                  institutional controls, or a groundwater
                  classification exception area."

                  (d)      Paragraph 12 B (iii) is hereby modified as
follows:

                  In line 3, after the word "materials", add the words
                  "issued or received by the Sublessee."

                  (e) Paragraph 12 G is hereby modified as follows:

                  In line 1, replace the word "premises" with the words "Demised
                  Premises" and in line 3, replace the word "Sublessor" with the
                  word "Sublessee".

         14.      (a)      Paragraph 13 A is hereby modified as follows:

                  In line 3, add the words: "including,  without limitation, the
                  roof and structural  components of the Demised  Premises,  the
                  building plumbing and electrical systems and equipment located
                  within the Demises Premises for general supply of water, heat,
                  air  conditioning,  gas and  electricity,  the  existing  HVAC
                  system,  alarm system and smoke  detectors  within the Demised
                  Premises" after the words "Demised  Premises";  and in line 6,
                  delete "(other than structural and other repairs which are the
                  responsibility of Sublessor pursuant to subsection B), subject
                  to  latent  defects  which  Sublessor  shall  be  required  to
                  correct" and replace such phrase with the phrase: "(other than
                  repairs   which  are  the   responsibility   of  the  building
                  maintenance person pursuant to Paragraph 13 B below)".

                  (b)      Paragraph 13 B is hereby deleted and replaced in
its entirety as follows:

                  "Sublessor  will  provide  a  building   maintenance   person.
                  Sublessee  shall be  responsible  for payment of its  pro-rata
                  share, determined as provided in Paragraph 5 (a) above, of the
                  costs and expenses  incurred by Sublessor in  performing  this
                  service,  including  the  cost of  hiring  and  maintaining  a
                  Building   maintenance   person  (such  costs  and   expenses,
                  collectively, "Janitorial Costs") as Additional Rent."

                  (c) Paragraph 13 C is hereby modified to delete the following:


                                       8
<PAGE>



                  "Except as  otherwise  specified  herein  (including,  without
                  limitation,  Sublessor's  obligations with respect to Casualty
                  Damage," in lines 1-3; and "(except for latent  defects  which
                  are not readily apparent by inspection,  which Sublessor shall
                  repair)" in lines 11- 13;

         and to add the following as the last sentence thereof:

                  "Sublessee accepts the existing HVAC system and other building
                  systems,  the roof and structure of the Demised Premises,  and
                  the  exterior  portions  of the Paramus  Facility  "AS IS" and
                  hereby  assumes the full and sole  responsibility,  at its own
                  cost,  for  the  condition,  operation,  repair,  replacement,
                  maintenance and modification of the Demised Premises."

         15. Paragraph 16 E (2) is hereby modified to add the following prior to
the period in the last sentence thereof:

                  "except as otherwise  specifically provided in this Lease with
                  respect to any obligation of Sublessee to indemnify  Sublessor
                  that survives termination of this Lease"

         16.  Paragraph  20 is hereby  deleted and  restated in its  entirety as
follows:

                  "Subject  to  compliance  by  Sublessee  with  the  terms  and
                  conditions  of the  operating  agreement  to be  entered  into
                  between  Sublessor  and  Sublessee  and other  tenants  of the
                  Paramus Facility which shall provide for the operation by such
                  tenants,  including Sublessee, of the Cafeteria in the Paramus
                  Facility  at  their  own  cost  and  expense,  allocated  on a
                  pro-rata basis which, as to Sublessee, shall be based upon the
                  total rentable square feet of the Demised Premises  determined
                  in accordance with Paragraph 4 B above, Sublessee shall have a
                  non-exclusive  license to use such Cafeteria for its employees
                  and business  invitees at Sublessee's  risk and expense on the
                  same  terms as  other  tenants  of the  Paramus  Facility  are
                  permitted to use such Cafeteria and subject to compliance with
                  such reasonable rules and regulations as may be promulgated by
                  Sublessor from time to time regarding the use of the Cafeteria
                  which  shall be  applied  uniformly  to all such  tenants  and
                  enforced without discrimination. Nothing herein shall obligate
                  Sublessor,  its successors or assigns,  to continue to operate
                  or maintain the Cafeteria,  or any  cafeteria,  in the Paramus
                  Facility  and,  if  Sublessee  shall  fail to comply  with its
                  obligations  hereunder or under the operating  agreement,  the
                  license  herein  granted to  Sublessee  to use,  operate,  and
                  maintain the

                                       9
<PAGE>


                  Cafeteria shall be discontinued or suspended,  at the election
                  of Sublessor.  In such event,  there shall be no adjustment to
                  Rent as a result  thereof,  except  that no  further  pro-rata
                  allocation  with respect to the Cafeteria  shall be payable by
                  Sublessee  in the  event  and from and after the date that the
                  license is suspended or discontinued,  and Sublessor  reserves
                  the right to lease the  Cafeteria  space to a third  party for
                  use as a cafeteria or for any other use."

         17. Paragraph 26 H is hereby modified to replace the addressees therein
specified with the following:

                  "As to Sublessor:

                  Mr. Eugene Jacobson
                  Century Associates
                  c/o Sun Chemical
                  222 Bridge Plaza South
                  Fort Lee, New Jersey 07024

                  As to Sublessee:

                  Mr. Robert Spence
                  Chief Financial Officer
                  Synaptic Pharmaceutical Corporation
                  215 College Road
                  Paramus, New Jersey 07652"

and to replace the telephone numbers therein specified as
follows:

                  "Sublessor: (201) 224-4600

                  Sublessee: (201) 261-1331"

         18. Paragraph 26 G is hereby modified as follows:

                  In line 1,  delete the word "NO";  in line 3,  delete the word
                  "Sublease"  and add the words  "Lease,  other  than  Cushman &
                  Wakefield of New Jersey, Inc. (the "Broker") immediately prior
                  to the  period;  in line 7, add the word  "other"  immediately
                  prior to the word  "realtors";  in lines 9 and 13, replace the
                  word  "Sublease"  with  "Lease";  and add the following as the
                  last sentence of the Paragraph:

                  "Sublessor shall pay the brokerage commission due
                  Broker pursuant to the terms of a separate agreement
                  with Broker."

         19. The following  provisions  shall be added to the Existing  Lease as
indicated:

                                       10
<PAGE>


                  (a)      Add as new Paragraph 27:

                  "27.     SUBLESSOR'S EXCULPATION.

                  Notwithstanding  anything  contained  in  this  Lease  to  the
                  contrary,  it is  specifically  agreed  that there shall be no
                  personal   liability  on  the  part  of  the   Sublessor,   or
                  Overlandlord,   and/or  their  respective  employees,  agents,
                  directors,  officers,   shareholders,   partners,  constituent
                  members,  successors  or assigns,  with  respect to any of the
                  terms, provisions,  covenants and conditions of this Lease and
                  Sublessee agrees to look solely to Sublessor's interest in the
                  Paramus  Facility  for the  recovery of any  judgment  against
                  Sublessor.  The  foregoing  is not  intended  to and shall not
                  limit any right that  Sublessee  may have to pursue a suit for
                  injunctive  relief or specific  performance  of the obligation
                  that is the  subject  of any  breach or default on the part of
                  Sublessor under this Lease. The within exculpation of personal
                  liability  shall be absolute and without  exception.  The term
                  "Sublessor"  as used in this sublease  shall mean the owner of
                  the  Sublessor's  interest,  whether fee or leasehold,  in the
                  Paramus  Facility,  or any  portion  thereof,  and if any such
                  interest be sold or transferred,  the seller shall be entirely
                  relieved of all covenants and obligations under this Lease."

                  (b)      Add as new Paragraph 28:

                  "28.     LEASE MODIFICATION.

                  If in  connection  with  obtaining  financing  for the Paramus
                  Facility,  or any part thereof,  or interest therein,  a bank,
                  insurance  company or other  recognized  institutional  lender
                  shall  request  reasonable  modifications  in the  Lease  as a
                  condition to such financing,  Sublessee will not  unreasonably
                  withhold,  delay or defer its consent  thereto,  provided that
                  such   modifications   do  not  increase  the  obligations  of
                  Sublessee  hereunder or materially decrease the obligations of
                  Sublessor  hereunder.  In addition  thereto,  Sublessee  shall
                  furnish to any such mortgagee or proposed  mortgagee copies of
                  Sublessee's  latest financial  statements duly certified by an
                  independent  certified  public  accountant,   or  if  no  such
                  certified  statement is available,  then such statements shall
                  be certified by the chief financial officer of Sublessee."

                  (c)      Add as new Paragraph 29:

                  "29. LIENS.

                                       11

<PAGE>

                  Sublessee  shall not do any act, or make any  contract,  which
                  may  create  or be  the  foundation  for  any  lien  or  other
                  encumbrance  upon any  interest of  Sublessor or any ground or
                  underlying lessor, in any portion of the Paramus Facility.  If
                  any  construction  lien  claim  or other  lien  (collectively,
                  "Lien"),  charge  or order for the  payment  of money or other
                  encumbrance  shall be filed against  Sublessor and/or any such
                  ground or underlying  lessor and/or any portion of the Paramus
                  Facility  (whether  or  not  such  Lien,  charge,   order,  or
                  encumbrance  is valid or  enforceable  as  such)  which  names
                  Sublessee as the debtor or obligor or alleges  that  Sublessee
                  is the debtor or obligor, Sublessee shall, at its own cost and
                  expense,  cause  same to be  discharged  of  record  or bonded
                  within  15 days  after  Sublessee's  receipt  of notice of the
                  filing  thereof,   and  Sublessee  shall  indemnify  and  save
                  harmless   Sublessor  and  all  such  ground  and   underlying
                  lessor(s)  against  and from all  costs,  liabilities,  suits,
                  penalties,  claims, and demands, including reasonable attorney
                  fees,  resulting  from  Sublessee's  failure to discharge same
                  within  such  period.  If  Sublessee  fails to comply with the
                  foregoing  provisions,  Sublessor  shall  have the  option  of
                  discharging  or  bonding  any such  Lien,  charge,  order,  or
                  encumbrance,  and Sublessee agrees to reimburse  Sublessor for
                  all  costs,  expenses  and other  sums of money in  connection
                  therewith as Additional Rent with interest at the maximum rate
                  permitted  by law,  which shall accrue from the date due until
                  paid,  promptly  upon demand.  All  materialmen,  contractors,
                  artisans,  mechanics,  laborers,  and any other persons now or
                  hereafter  contracting  with  Sublessee or any  contractor  or
                  subcontractor  of Sublessee  for the  furnishing of any labor,
                  services,  materials,  supplies,  or equipment with respect to
                  any portion of the Demised Premises, at any time from the date
                  hereof  until the end of the Term,  are  hereby  charged  with
                  notice  that  they look  exclusively  to  Sublessee  to obtain
                  payment for same." (d) Add as new Paragraph 30:

                           "30. SUBLESSOR'S RESERVED RIGHTS.

                           Sublessee  acknowledges  that the Paramus Facility is
                           not open to the general public. Access to the Paramus
                           Facility is restricted to Sublessor, Sublessee, their
                           agents, employees, and their invited visitors. In the
                           event  of  a  labor   dispute   including  a  strike,
                           picketing,  informational or associational activities
                           directed at Sublessee or any other tenant,  Sublessor
                           reserves the right, on such notice to Sublessee as is
                           reasonably practicable, unilaterally to alter
                           Sublessee's


                                       12
<PAGE>


                           ingress  and egress to the  Demised  Premises or make
                           any other change in operating  conditions to restrict
                           pedestrian,  vehicular or delivery ingress and egress
                           to a  particular  location.  Additionally,  Sublessor
                           reserves  unto  itself  all  rights  not  granted  to
                           Sublessee  in  this  Lease,   including,  by  way  of
                           example,  the right to  change  the name by which the
                           Paramus Facility is commonly known."

                  (e)      Add as new Paragraph 31:

                  "31. SUBLESSOR'S RIGHT TO MORTGAGE/ASSIGN.

                  Notwithstanding  any  other  provision  of this  Lease  to the
                  contrary,   Sublessor,   and  any  successor  or  assignee  of
                  Sublessor,  may convey all or any  portion of its  interest in
                  Sublessor, this Lease, the Paramus Facility

                  or the Demises  Premises.  Sublessor shall also have the right
                  from  time  to  time  to  pledge,  mortgage  or  encumber  its
                  Interests in the Demised  Premises  and the Paramus  Facility.
                  Any  provision of this Lease to the contrary  notwithstanding,
                  the  provisions of any such mortgage shall govern in the event
                  of  Casualty  Damage  or a  Taking  of the  Demised  Premises,
                  including,   without   limitation,   the  disposition  of  any
                  insurance  proceeds payable in the case of Casualty Damage and
                  of awards  payable in connection  with such Taking.  Sublessor
                  shall provide Sublessee with notice of such mortgage."

                  (f)      Add as new Paragraph 32:

                  "32. ASBESTOS REMEDIATION.

                  Sublessee agrees that it shall have the obligation to promptly
                  remove or  encapsulate  asbestos  present  within the  Demised
                  Premises (which term, for purposes of this Paragraph 32, shall
                  include the space  attributable to Sublessee plus  Sublessee's
                  pro-rata  share of the common areas of the  Building),  at its
                  costs  and  expense,   in  compliance  with  Laws.   Sublessee
                  acknowledges  that prior to the date of this Lease,  Sublessee
                  will  inspect  the  Demised   Premises  for   the  purpose  of
                  determining the presence,  if any, of asbestos,  and the costs
                  of  removing or  encapsulating  same in  compliance  with Laws
                  ("Asbestos   Remediation   Costs").   As  a  result   of  such
                  inspection,  Sublessee has determined that asbestos is present
                  within the Demised Premises. Sublessee represents to Sublessor
                  that,  pursuant to its  agreement  with  Sublessor  respecting
                  same, the Asbestos  Remediation  Costs for  remediation of VAT
                  tile  located in areas of the  Demised  Premises  that are not
                  utilized as laboratory space (such space, "Non-Laboratory
                  Space") will be  determined on the basis of

                                       13
<PAGE>

                  encapsulation of such VAT tile rather than removal of same. If
                  the Asbestos  Remediation Costs actually incurred by Sublessee
                  exceed $100,000, Sublessor hereby agrees that, upon submission
                  of   evidence   reasonably   satisfactory   to  it   of   such
                  expenditures,  it will  reimburse  Sublessee  in the form of a
                  rental  credit  applied in equal monthly  installments  to the
                  Annual Base Rent due hereunder during Lease Years 1 and 2, for
                  the  amount of such  Asbestos  Remediation  Costs in excess of
                  $100,000;  provided,  however,  that  Sublessor's  obligations
                  under  this  Paragraph  32 shall not  exceed  $133,600  in the
                  aggregate  and  Sublessor  shall have no obligation to pay for
                  the cost of removal of VAT tile from the Non-Laboratory Space.
                  Sublessee shall be responsible for payment of all of the costs
                  of removal of asbestos from the Demised  Premises in excess of
                  $233,600.  Notwithstanding  the foregoing,  Sublessor reserves
                  the right to have its contractor determine the cost of removal
                  of the asbestos  and, if such  contractor's  estimate is lower
                  than that provided by Sublessee, Sublessee agrees that, at the
                  election of  Sublessor,  such  removal  will be  performed  by
                  Sublessor's  contractor.  The  provisions of this Paragraph 32
                  shall  survive  expiration  or  earlier  termination  of  this
                  Lease."

                  (g)      Add as new Paragraph 33:

                  "33. REPRESENTATIONS AND WARRANTIES.

                  Sublessee hereby reaffirms all of its  representations  in the
                  Sublease  including,  without  limitation,  those set forth in
                  Paragraph  9 of the  Sublease  and in  Paragraph  6(a)  of the
                  Sublease Amendment."

                  (h)      Add as new Paragraph 34:

                  "34. LOADING DOCKS.

                  Sublessee  shall  have  control  of the  loading  docks at the
                  Paramus Facility  provided that Sublessor and other tenants of
                  the Paramus  Facility shall not at any time during the Term be
                  precluded from using such loading docks.  Sublessee  agrees to
                  cooperate  with  Sublessor  and such  other  tenants  in their
                  respective use of the loading docks."

                  (i)      Add as new Paragraph 35:

                  "35.  RIGHT OF FIRST OFFER

                  A.       Subject to and in accordance with the provisions
                  of this  Paragraph 35 and provided that  Sublessee is not

                                       14

<PAGE>

                  then in default of the  provisions  of this  Lease,  Sublessor
                  agrees that if, as and when space in the Paramus  Facility not
                  then included in the Demised Premises becomes  available (such
                  space, the "Available Space"), Sublessor will notify Sublessee
                  thereof  and of the terms  and  conditions  pursuant  to which
                  Sublessor  will  lease  such  Available  Space  (such  notice,
                  "Availability   Notice").  If  Sublessee  elects  to  add  the
                  Available  Space to the  Demised  Premises  on the  terms  and
                  conditions  set forth in the  Availability  Notice,  Sublessee
                  shall  deliver  notice of its  election  ("Expansion  Election
                  Notice") to Sublessor  within fifteen (15) days of the date of
                  Sublessee's  receipt  of the  Availability  Notice.  Sublessee
                  agrees  that,  if it fails to deliver the  Expansion  Election
                  Notice  as and when  aforesaid,  it shall  be  deemed  to have
                  elected not to lease the  Available  Space and to have forever
                  waived its right to exercise  its option to add the  Available
                  Space to the Demised  Premises  and  Sublessor  shall have the
                  right to lease the  Available  Space to a third party free and
                  clear of any claim of Sublessee thereto.  Notwithstanding such
                  waiver, however,  Sublessor agrees that if the Available Space
                  is offered to a third  party at an annual  base rent less than
                  ten  percent  (10%) of the  annual  base rent set forth in the
                  Availability  Notice,  Sublessor will notify Sublessee of such
                  reduction  (such  notice,  "Reduction  Notice") and  Sublessee
                  shall have five (5) days from its  receipt  of such  Reduction
                  Notice to deliver its Expansion  Election Notice to Sublessor.
                  If Sublessee  elects to add the Available Space to the Demised
                  Premises,  such Available  Space shall be added to the Demised
                  Premises  for all  purposes  under this Lease and on the terms
                  and  conditions as are then in effect as modified by the terms
                  and  conditions  of  the  Availability   Notice,   and/or  the
                  Reduction Notice, as applicable, as of the earlier of the date
                  listed in the  Expansion  Election  Notice or the date that is
                  thirty (30) days from the date of the  Availability  Notice or
                  Reduction Notice, if applicable. Any termination,  expiration,
                  cancellation  or surrender of this Lease shall  terminate  any
                  right or option to expand  provided  for in this  Paragraph 35
                  not yet exercised.  Said right or option may not be separately
                  sold, assigned or otherwise transferred.


         20. Paragraphs 6 (a), 8, 9 and 10 of the Sublease  Amendment are hereby
deleted in their entirety.

         21. Schedule C, Subparagraph (a) is hereby modified as follows:

                  (a)      replace the word: "Building" with the words:
                  "Paramus Facility" throughout;

                                       15
<PAGE>


                  (b)      add the following at the end of the subparagraph:

                  "If at any time  during the Term of this Lease the  methods of
                  taxation  shall be altered so that,  in addition to or in lieu
                  of or as a substitute for the whole or any part of real estate
                  taxes  there  shall be levied,  assessed or imposed (i) a tax,
                  license,  fee or other charge on the rents  received,  or (ii)
                  any other type of tax or other  imposition in lieu of, or as a
                  substitute  for, or in addition to the whole or any portion of
                  any real estate taxes, then the same shall be included as Real
                  Estate Taxes under this Lease."

                  The submission of this Agreement does not constitute an offer,
and this  Agreement  shall become  effective  only upon  execution  and delivery
thereof by Sublessor and Sublessee.

         IN WITNESS WHEREOF,  the parties hereto have executed this Agreement on
the day and year first above written.

WITNESS:                           CENTURY ASSOCIATES
                                   By: J&E of Paterson, Inc.

- --------------------               /s/ Eugene Jacobson
                                   -------------------
                                   President


ATTEST:                            SYNAPTIC PHARMACEUTICAL
                                   CORPORATION


- --------------------               By:/s/Robert L. Spence
                                      -------------------
                                   Its:



                                       16


<PAGE>





STATE OF NEW JERSEY

COUNTY OF BERGEN
)
)
)


SS.:
         I  CERTIFY  that  on  November 19,  1997, Eugene Jacobson
personally came before me and acknowledged under oath, to my satisfaction,  that
this person

         (a)      is named in and personally signed the attached
document; and

         (b)  signed,  sealed  and  delivered  this  document  on  behalf of the
Partnership.

                                                  /s/ Virginia Edwards
                                                  -----------------------------
                                                  Attorney at Law
                                                  State of New Jersey



STATE OF NEW JERSEY

COUNTY OF BERGEN
)
)
)


SS.:
         I  CERTIFY  that  on October 17,  1997, Robert L. Spence
personally  came  before  me and this  person  acknowledged  under  oath,  to my
satisfaction, that:

         (a)      this person signed, sealed, and delivered the attached
document as

         (b)      the proper corporate seal was affixed; and

         (c)      this  document was signed and made by the  corporation  as its
                  voluntary  act and deed by virtue of authority  from its Board
                  of Directors.

                                                 /s/ Elinor Bernstein
                                                 ------------------------------
                                                 Notary Public






                                        17

<PAGE>



                                   SCHEDULE A

                             DESCRIPTION OF THE LAND





                                        18

<PAGE>



                                   SCHEDULE B

                        INSTRUMENTS COMPRISING OVERLEASE



1.                Lease Agreement dated February 4, 1969
                   Century Associates (Landlord)
                   International Playtex Corporation (Tenant)

2.                Land Lease Agreement dated June 21, 1973
                   Century Associates (Landlord)
                   International Playtex Corporation (Tenant)

3.                Lease Agreement dated October 7, 1974
                   Century Associates Landlord)
                   International Playtex Company, Division of Rapid-
                   America Corporation (Tenant)

4.                Amendment to Lease dated August 7, 1973
                   Century Associates (Landlord)
                   International Playtex Corporation (Tenant)

5.                Amendment to Lease dated August 30, 1973
                   Century Associates (Landlord)
                   International Playtex Corporation (Tenant)

6.                Amendment to Lease Agreement dated October 7, 1974
                   Century Associates (Landlord)
                   International Playtex Company, Division of Rapid-
                   American Corporation (Tenant)

7.                Letter Agreement dated May 30, 1974
                   Century Associates (Landlord)
                   International Playtex Company, Division
                   of Rapid - American Corporation (Tenant)




                                        19

<PAGE>



                                   SCHEDULE C

                                DEMISED PREMISES


Space A:          approximately 42,000 square feet, 28,474 square feet of
                  which is located in the northwest part of the Paramus
                  Facility and 12,800 square feet of which is located in
                  the northeast part of the single story center section
                  of the Paramus Facility, each as shown stripped on
                  Schedule A attached hereto and made a part hereof;


Space B:          approximately 15,000 square feet on the second floor of
                  the east wing of the Paramus Facility;


Space C:          approximately 3,000 square feet of space adjacent to
                  Space A;


Space D:          approximately 8,000 square feet of laboratory space,
                  adjacent to Space A;


Space E:          approximately 5,000 square feet adjacent to Space A;

Space F:          approximately 37,000 square feet now or formerly
                  occupied by Playtex Apparel Inc. or AOE if, as and when
                  same, or any portion thereof, shall become available
                  for lease ("Playtex Space");

each as  identified  as such on  Schedule  C-l  attached  hereto and made a part
hereof,  plus, in each case,  Sublessee's  pro-rata  share of the total rentable
square feet of the Cafeteria.





                                        20

<PAGE>


                                   SCHEDULE D

[GRAPHIC OMITTED]



                                        21






                                                                EXHIBIT 10.36
                                                                -------------

                        AMENDMENT NO. 3 AND SUPPLEMENT TO
                  RESEARCH COLLABORATION AND LICENSE AGREEMENT



                                                     Amendment    No.    3   and
                                                     Supplement     dated    and
                                                     effective December 1, 1997,
                                                     between            SYNAPTIC
                                                     PHARMACEUTICAL CORPORATION,
                                                     a   Delaware    corporation
                                                     ("Synaptic"),  and  MERCK &
                                                     CO.,  INC.,  a  New  Jersey
                                                     corporation ("Merck").


                                    Recitals

                  WHEREAS,   Merck  and  Synaptic  are  parties  to  a  Research
Collaboration  and License  Agreement  dated as of November 30, 1993, as amended
(the "Agreement"); and

                  WHEREAS,  Merck and Synaptic  desire to extend the term of the
Research  Program  (capitalized  terms used and not  defined  herein  having the
meanings set forth in the Agreement)  under the Agreement as set forth herein in
order  to  continue  to  work  towards  the  identification  of  back-up  safety
assessment candidates;

                  NOW THEREFORE,  in consideration of the premises and covenants
set forth herein, the parties agree as follows:

         1.       The term of the  Research  Program is hereby  extended  for an
                  additional  one-year period expiring on November 30, 1998 (the
                  "Second Extension  Period").  The term may be further extended
                  only upon the mutual agreement of the parties in writing.

         2.       During the Second  Extension  Period,  as part of the Research
                  Program, Synaptic shall devote the efforts of two man years in
                  support of the continuing pharmacological  characterization of
                  Merck compounds.

         3.       Merck shall pay to Synaptic,  within 30 days following the end
                  of each three-month  period of the Second Extension Period, an
                  amount equal to $120,000 (one hundred twenty thousand dollars)
                  in consideration of the support set forth in Article 2. In the
                  event that Merck  terminates the Research  Program pursuant to
                  Article 4 hereof,  Merck will pay  Synaptic a pro rata portion
                  of the $120,000 based on that number of days which precede the
                  Termination  Date  in the  three-month  period  in  which  the
                  Termination Date occurs.

                                       1

<PAGE>


     4.           At any  time  following  written  notification  from  Merck to
                  Synaptic  that the Merck  Research  Management  Committee  has
                  accepted a second back-up safety assessment  candidate,  Merck
                  may  terminate  the Research  Program by providing at least 90
                  days prior written notice to Synaptic. As of the ninetieth day
                  following such notice (the "Termination Date"), Synaptic shall
                  discontinue  the support  set forth in Article 2 hereof.  Upon
                  any  termination  of the  Research  Program  pursuant  to this
                  Article 4, no sums shall be payable by Merck  under  Article 3
                  except  for  amounts  due or earned but not yet paid as of the
                  Termination Date.

         5.       From and after the date first written above, all references in
                  the  Agreement  to "this  Agreement,"  "hereunder,"  "hereof,"
                  "herein," or words of similar import,  shall be a reference to
                  the  Agreement,  as  amended  by  this  Amendment  No.  3  and
                  Supplement.

         6.       From and after the date first written above, all references in
                  the Agreement to "the Research  Program"  shall be a reference
                  to the Research Program  conducted during the period beginning
                  on November  30, 1993,  and ending on November  30,  1998,  in
                  accordance with the Agreement,  as amended and supplemented by
                  this Amendment No. 3 and  Supplement,  or such earlier date as
                  may be specified in a  notification  from Merck to Synaptic in
                  accordance with Article 4 above.

         7.       Except as expressly amended and supplemented by this Amendment
                  No. 3 and Supplement, the Agreement shall remain in full force
                  and effect and unchanged.


                  IN WITNESS WHEREOF, the parties have caused this Amendment No.
3 and  Supplement  to be executed  and  delivered  as of the date first  written
above.

                          SYNAPTIC PHARMACEUTICAL CORPORATION

                          By:/s/ Kathleen P. Mullinix
                             ------------------------------
                                 Kathleen P. Mullinix
                                 Chairman, President and Chief Executive Officer


                          MERCK & CO., INC.

                          By:/s/ Bennett M. Shapiro
                             ------------------------------
                                 Bennett M. Shapiro
                                 Executive VP, Worldwide Basis Research


                                       2

                                                                EXHIBIT 10.37
                                                                -------------

                                                              AMENDED        AND
                                                     RESTATED         EMPLOYMENT
                                                     AGREEMENT   dated   as   of
                                                     January  1,  1998,  between
                                                     SYNAPTIC     PHARMACEUTICAL
                                                     CORPORATION,   a   Delaware
                                                     corporation            (the
                                                     "Company"),  and  ROBERT L.
                                                     SPENCE (the "Employee").


                  The  Employee  is  currently   employed  by  the  Company  and
possesses  special and partic ular  knowledge of the business and  operations of
the  Company  and of the  industry  in which it  operates.  The  Company and the
Employee are parties to an Employment Agreement dated as of January 1, 1994 (the
"Original Employment Agreement") the initial term of which expires on January 1,
1998.  The Company and the Employee  now desire to amend and restate  herein the
terms of the Employee's employment by the Company.

                  NOW,  THEREFORE,  in consideration of the mutual covenants and
obligations hereinafter set forth, the parties hereto agree as follows:

                  1.       Employment.  The Company hereby employs the Employee,
and the Employee hereby accepts such employment by the Company, on the terms and
subject to the conditions hereinafter set forth.

                  2. Term.  Subject to earlier  termination as provided  herein,
the  employment  of the  Employee  hereunder  shall  be for a  four-year  period
commencing  on January 1, 1998 (the  "Effective  Date") and ending on the fourth
anniversary of the Effective Date; provided, however, that commencing as of such
fourth  anniversary  and on each  anniversary  thereafter,  unless  either party
hereto  gives the other party at least 90 days' prior  written  notice of its or
his election not to extend the period of the  Employee's  employment  hereunder,
such period shall automatically be extended for an additional one-year period on
the same terms and conditions set forth herein,  unless otherwise agreed upon by
the parties.  For  convenience of reference,  such period of employment,  as the
same may be extended  as  aforesaid,  is  referred to herein as the  "Employment
Period."

                  3.  Duties.  (a) During the  Employment  Period,  the Employee
shall be  employed  as the Senior Vice  President,  Finance and Chief  Financial
Officer of the Company and shall perform such duties for the Company  consistent
with such  position as may be assigned  to him by the persons  having  authority
regarding such matters at the Company.

     (b)   The Employee shall perform his duties hereunder at the offices of the
Company in Paramus, New Jersey; provided,  however, that the Company may require
the  Employee  to travel in  connection  with the  performance  of such  duties.
Anything  contained  herein  to the  contrary  notwithstanding,  if the  Company
requires the Employee to be based anywhere other than within a 50-mile radius of
New York City and notifies the Employee in writing that his continued employment
by the Company is conditional  upon such relocation and the Employee  refuses to
so

                                       -1-


<PAGE>



relocate,   then  any  Termination  of  Employment  of  the  Employee  resulting
therefrom, whether initiated by the Company or by the Employee, shall constitute
a Termination Without Cause.

                  4. Time to be Devoted to  Employment.  Except for vacations in
accordance  with the Company's  vacation  policies and absences due to temporary
illness,  during the  Employment  Period,  the Employee  shall devote all of his
business  time,  attention and energies to the  performance  of his duties under
this Agreement.  During the Employment Period, the Employee shall not be engaged
in any other business activity which, in the judgment of the Company,  conflicts
with the  duties of the  Employee  under  this  Agreement,  whether  or not such
activity is pursued for gain, profit or other pecuniary advantage.

                  5.       Compensation; Reimbursement.

         (a)   Base Salary.  During the Employment Period, the Company shall pay
to the Employee a base salary of $170,000 per annum,  subject to increase by the
Board of  Directors  of the  Company,  in its  discretion.  For  convenience  of
reference,  such base  salary,  as the same may be increased  as  aforesaid,  is
referred to herein as the "Base  Salary."  The Base  Salary  shall be payable in
such  installments  (but not less frequent than monthly) as is the policy of the
Company generally with respect to its employees.

         (b)        Annual Performance Bonus.  The Employee shall be eligible to
receive a cash bonus of at least  $25,000  with  respect to each  calendar  year
during the Employment Period, subject to the achievement of the goals determined
at the  commencement  of each year by the  President of the  Company.  Such cash
bonus, if earned,  will be payable to the Employee within  forty-five days after
the end of the  calendar  year  in  respect  of  which  such  bonus  is  earned.
Additional bonuses may be approved by the Board of Directors of the Company,  in
its discretion.

         (c)      Benefits.  During the Employment Period, the Employee shall be
entitled to such benefits as are generally made available to other  employees of
the Company and to such  additional  benefits as are generally made available to
employees of the Company at  substantially  the same level of  employment as the
Employee.

         (d)       Reimbursement of Expenses.  During the Employment Period, the
Company  shall  reimburse  the  Employee,  in  accordance  with the policies and
practices of the Company in effect from time to time during such Period, for all
reasonable and necessary traveling expenses and other disbursements  incurred by
him for or on behalf of the Company in  connection  with the perfor mance of his
duties  hereunder  (such  expenses  being  referred  to herein as  "Reimbursable
Expenses")  upon  presentation  by the  Employee to the  Company of  appropriate
documentation therefor.

                  6.       Termination of Employment.

         (a)       General.  The Company may terminate the Employee's employment
hereunder at any time for any reason.  The Employee may terminate his employment
hereunder pursuant to a Resignation for Good Reason, a Voluntary  Termination or
a Disability Termination.

                                       -2-


<PAGE>



The Employee's  employment  shall terminate  automatically  upon his death.  Any
termination of the Employee's employment is referred to herein as a "Termination
of Employment."

          (b)    Termination Notice.  The Company or the Employee may initiate a
Termination of Employment in any manner permitted  hereunder by giving the other
party written notice thereof (the "Termination Notice").

          (c)  Termination Date.  The effective date (the "Termination Date") of
any Termination of Employment shall be deemed to be the later of (i) the date on
which  the  Termination  Notice  is given  and (ii)  the date  specified  as the
effective date in the Termination Notice; provided, however, that in the case of
the Employee's death, the Termination Date shall be his date of death.

                  7.       Termination by the Company.

          (a)    Termination for Cause.  Any Termination of Employment initiated
by the Company upon the occurrence of an event that constitutes Cause shall be a
"Termination for Cause." For purposes of this Agreement,  the term "Cause" shall
mean the  Employee's  (i)  willful  failure to  perform  those  duties  that the
Employee is required or expected to perform as an employee of the Company  under
Section 2 hereof,  (ii) consistent  failure over a substantial period of time to
perform  competently  such duties,  (iii)  conviction of a crime involving moral
turpitude,  dishonesty,  theft,  unethical  business  conduct  or  conduct  that
significantly  impairs the  reputation  of the Company or (iv) failure to devote
all of his  business  time,  attention  and energies to the  performance  of his
duties  hereunder.  In the event of a  Termination  for Cause,  the  Termination
Notice given to the Employee by the Company shall state that the  Termination of
Employment is "for Cause."

          (b)          Termination Without Cause.  Any Termination of Employment
initiated by the Company (other than a Termination for Cause or a Disability
Termination) shall be a "Termination Without Cause."

                  8.       Termination by the Employee.

          (a)        Resignation for Good Reason.  Any Termination of Employment
initiated by the Employee  within 90 days following the occurrence of any of the
following events shall be a "Resignation for Good Reason":

                  (i)  subsequent  to a  Change  in  Control,  and  without  the
         Employee's express written consent,  (A) the assignment to the Employee
         of any duties inconsistent with his position, duties,  responsibilities
         and status within the Company prior to such Change in Control,  (B) any
         material change in the Employee's  titles or offices as in effect prior
         to such  Change in Control or (C) any removal of the  Employee  from or
         any failure to re-elect the Employee to any material  position  held by
         him prior to such Change in Control;

                  (ii)  subsequent  to a Change in Control,  a reduction  in the
         Employee's Base Salary or a termination of the Employee's participation
         in any bonus plan or program (or a

                                       -3-


<PAGE>



         substantial  reduction in the level of such participation) as in effect
         on the  Effective  Date  or as the  same  may be  increased  after  the
         Effective Date and in effect at the time;

                  (iii)  subsequent  to a Change in  Control,  and  without  the
         Employee's  express written consent,  any requirement that the Employee
         be based anywhere other than within a 50-mile radius of New York City;

                  (iv)  subsequent  to a Change in  Control,  the failure by the
         Company to  continue  the  Employee's  participation  in any benefit or
         compensation  plan, life insurance plan,  health-and-  accident plan or
         disability plan in which the Employee is  participating  at the time of
         such  Change  in  Control  (or in plans  providing  the  Employee  with
         substantially  similar or more favorable benefits) or the taking of any
         action by the  Company  which  would  materially  adversely  affect the
         Employee's   participation  in  or  materially  reduce  the  Employee's
         benefits  under  any of such  plans  or  deprive  the  Employee  of any
         material  fringe  benefit  enjoyed by the  Employee at the time of such
         Change in Control; or

                  (v)  subsequent  to a Change in  Control,  the  failure by the
         Company to obtain  the  assumption  of the  agreement  to perform  this
         Agreement by any successor as contemplated by Section 16.

In the event of a Resignation for Good Reason,  the Termination  Notice given to
the Company by the Employee shall state that the  Termination of Employment is a
"Resignation for Good Reason."

          (b)      Other Termination by the Employee.  Any Termination of
Employment  initiated by the Employee  (other than a  Termination  of Employment
resulting  from  the  Employee's  death,  a  Resignation  for Good  Reason  or a
Disability Termination) shall be a "Voluntary Termination."

                  9. Termination by the Company or by the Employee -- Disability
Termination.  Any  Termination  of  Employment  resulting  from  the  Employee's
Disability shall be a "Disability  Termination." For purposes of this Agreement,
the term  "Employee's  Disability"  shall mean the  Employee's  illness or other
physical or mental  disability  that prevents the Employee from  performing  his
duties hereunder for a period of 90 days in any 180-day period.  In the event of
a Disability Termination, the Termination Notice given to one party by the other
party  shall  state  that  the   Termination  of  Employment  is  a  "Disability
Termination."

                  10. Effect of Termination of Employment. (a) In the Event of a
Termination of Employment  (other than a Termination of Employment  contemplated
by Section 11(a)),  neither the Employee nor his estate or  beneficiaries  shall
have any  further  rights or claims  against the  Company  under this  Agreement
except the right to receive:

                  (i) the portion of the Base Salary which  accrued with respect
         to the period prior to the  Termination  Date but which remained unpaid
         as of the Termination Date;


                                       -4-


<PAGE>



                  (ii) the aggregate amount of Reimbursable  Expenses which were
         incurred prior to the Termination Date but which were not reimbursed by
         the Company as provided in Section 5(d) prior to the Termination  Date;
         and

                  (iii) any other benefits to which the Employee may be entitled
         upon such  Termination  of  Employment  under the plans,  programs  and
         policies of the Company then in effect, which benefits shall be payable
         in accordance with the terms of such plans, programs and policies;

provided,  however,  that if the  Termination  of  Employment  is  pursuant to a
Termination Without Cause, then, in addition to the amounts computed pursuant to
the foregoing  provisions  of this Section  10(a),  the Employee  shall have the
right to receive as severance  compensation an amount (the  "Severance  Amount")
equal to 50% of one year's Base Salary,  such Severance  Amount to be payable at
the same times at which and in the same  manner in which the Base  Salary  would
have  been  payable  to the  Employee  had the  Termination  of  Employment  not
occurred.

          (b)   The Employee shall not be required to mitigate the amount of any
payment  provided  for  in  this  Section  10 by  seeking  other  employment  or
otherwise,  and no payment or benefit  provided  for in this Section 10 shall be
reduced by compensation  earned by the Employee as a result of his employment by
another employer following the Termination Date, or otherwise.

                  11. Effect of Termination of Employment  following a Change in
Control.  (a) In the event that the  Employee's  employment  with the Company is
terminated  in  contemplation  of, or at any time within one year  following,  a
Change in Control, and such termination  constitutes a Termination Without Cause
or a  Resignation  for Good  Reason,  neither  the  Employee  nor his  estate or
beneficiaries  shall have any further rights or claims against the Company under
this Agreement other than the following:

                  (i) the right to receive all amounts and benefits to which the
         Employee  would be  entitled  under  Section 10 upon a  Termination  of
         Employment; and

                  (ii) all stock  options,  stock  bonus  awards and  restricted
         stock grants relating to securities of the Company held by the Employee
         on the Termination Date shall vest or become  exercisable,  as the case
         may be, on the Termination Date,  notwithstanding any provisions in any
         such stock  options,  stock bonus awards or restricted  stock grants or
         the plans covering the same to the contrary, and all rights to exercise
         such stock  options  shall  remain  exercisable  by the  Employee for a
         period of not less than 120 days after the Termination Date.

If the benefits payable hereunder, together with other payments in the nature of
compensation  to or with respect to the Employee,  would otherwise be subject to
the excise taxes  imposed  under  Section  280G of the Internal  Revenue Code of
1986, as amended ("Code"), and if the net value of such benefits and payments in
the nature of  compensation,  after  reduction for such taxes,  is less than the
aggregate  value of the  benefits  and  payments  in the nature of  compensation
determined  as if such  amounts had been $1.00 less than a maximum  amount which
could be paid without imposition of

                                       -5-


<PAGE>



excise taxes,  then the benefits  payable  hereunder shall be reduced to highest
amount such that such  excise  taxes  shall not be imposed  with  respect to the
benefits  or  the  other  payments  in the  nature  of  compensation.  It is the
intention of this  provision to reduce  benefits  payable  hereunder only if the
Employee would be in a superior  position  taking into account such excise taxes
than if such payments were made, and such reduction  shall, in any event, be the
least  amount in order that the Employee be better off with the  reduction  than
before  such  reduction.  The  calculation  of the  value  of  benefits  payable
hereunder and other payments in the nature of compensation, and the implications
of the excise tax rules of Section 280G of the Code,  shall be determined by the
Company in good faith based on written advice of a national accounting firm.

          (b)   The Employee shall not be required to mitigate the amount of any
payment  provided  for  in  this  Section  11 by  seeking  other  employment  or
otherwise,  and no payment or benefit  provided  for in this Section 11 shall be
reduced by compensation  earned by the Employee as a result of his employment by
another employer following the Termination Date, or otherwise.

          (c) As used  herein,  the term  "Change  in  Control" shall mean a
change in  control  of the  Company of a nature  that  would be  required  to be
reported  in  response to Item 1 of Form 8-K  promulgated  under the  Securities
Exchange Act of 1934, as amended  ("Exchange  Act"), if the Company were at that
time  subject to such  reporting  requirements  of the Exchange  Act;  provided,
however, that such term shall in any event be deemed to have occurred if (i) any
"person" (as such term is used in Sections  13(d) and 14(d) of the Exchange Act)
is or  becomes  the  "beneficial  owner" (as  defined  in Rule  13d-3  under the
Exchange Act), directly or indirectly, of securities of the Company representing
35% or more of the  combined  voting  power of the  Company's  then  outstanding
securities or (ii) during any one-year  period or any period of two  consecutive
years,  individuals who at the beginning of any such period constitute the Board
of  Directors  of the  Company  cease for any  reason to  constitute  at least a
majority  thereof  as of the end of such  period  unless  the  election,  or the
nomination for election by the Company's stockholders,  of each new director was
approved by a vote of at least  two-thirds  of the directors of the Company then
still in office who were directors at the beginning of such period.

                  12.  Notices.  All  notices or other  communications  that are
required or permitted  hereunder shall be in writing and shall be deemed to have
been  given  if (a)  personally  delivered  or sent by  telecopier,  (b) sent by
nationally-recognized  overnight  courier or (c) sent by registered or certified
mail, postage prepaid, return receipt requested, addressed as follows:

                  if to the Employee, to him at:

                           50 Jackson Place
                           Lyndhurst, New Jersey  07071


                                       -6-


<PAGE>



                  if to the Company, to it at:

                           215 College Road
                           Paramus, New Jersey  07652
                           Attention:  President
                           Telecopier:  201-261-0623

or to such  other  address  as the party to whom  notice is to be given may have
furnished  to each  other  party in  writing in  accordance  herewith.  Any such
communication  shall be deemed  to have been  received  (i) when  delivered,  if
personally  delivered,  sent by  telecopier  or  sent by  nationally-recognized,
overnight courier and (ii) on the third Business Day following the date on which
the piece of mail containing such  communication is posted,  if sent by mail. As
used  herein,  the term  "Business  Day" means a day that is not a  Saturday,  a
Sunday or a day on which banking institutions in the city to which the notice or
communication is to be sent are not required to be open.

                  13. Entire Agreement;  Amendments. This Agreement contains the
entire  agreement  between the parties hereto with respect to the subject matter
hereof and supersedes all prior or contemporaneous negotiations, correspondence,
understandings   and  agreements  between  the  parties  with  respect  thereto,
including, without limitation, the Original Employment Agreement. This Agreement
may be amended only by an agreement  in writing  signed by both parties  hereto.
Anything  contained  herein to the contrary  notwithstanding,  the provisions of
Sections 10 and 11 shall  survive the  expiration  or early  termination  of the
Employment Period.

                  14.  Assignment.  This  Agreement  is  personal in its nature.
Accordingly,  neither  party  hereto  shall,  without  the consent of the other,
assign this Agreement or any rights or obligations hereunder to any other person
or entity.

                  15.  Benefits of Agreement.  The  provisions of this Agreement
shall be binding  upon and inure to the  benefit  of the  heirs,  beneficiaries,
executors,  administrators  and  permitted  assigns  of  the  Employee  and  the
successors and permitted assigns of the Company.

                  16. Obligation of the Company's  Successors.  Any successor to
substantially  all of the  Company's  assets  and  business,  whether by merger,
consolidation,  purchase of assets or otherwise, shall succeed to the rights and
obligations  of the  Company  hereunder.  The  Company  shall  require  any such
successor,  by agreement in form and substance  satisfactory to the Employee, to
expressly  assume and agree to perform this  Agreement in the same manner and to
the same  extent  that the  Company  would be  required to perform it if no such
succession had taken place.  The failure of the Company to obtain such agreement
prior to the  effectiveness  of any such  succession  shall be a breach  of this
Agreement  and shall  entitle the  Employee  to receive  from the Company or its
successor the same amounts and benefits  that the Employee  would be entitled to
receive  under  Sections  11(a)(i) and  11(a)(ii)  upon a  Resignation  for Good
Reason.  For purposes of implementing the immediately  preceding  sentence,  the
date on  which  any such  succession  becomes  effective  shall  be  deemed  the
Termination Date.


                                       -7-

<PAGE>



                  17. Waiver of Breach.  A waiver of any breach of any provision
of this  Agreement  shall not  constitute  or  operate  as a waiver of any other
breach of such provision or of any other  provision,  and any failure to enforce
any provision  hereof shall not operate as a waiver of such  provision or of any
other provision.

                  18. Execution in Counterparts.  This Agreement may be executed
in one or more counterparts,  each of which shall be deemed an original, but all
of which shall constitute one and the same instrument.

                  19.      Headings.  The headings of sections in this Agreement
are for convenience only, are not a part of this Agreement and shall not affect
the construction of the provisions of this Agreement.

                  20.  Governing Law. This  Agreement  shall be governed by, and
construed and enforced in accordance  with,  the laws of the State of New Jersey
without giving effect to principles of conflicts of laws.

                  21.  Enforceability.  In the event that any  provision of this
Agreement  is  determined  to  be  partially  or  wholly  invalid,   illegal  or
unenforceable  in any  jurisdiction,  then  such pro  vision  shall,  as to such
jurisdiction,  be modified or  restricted  to the extent  necessary to make such
provision  valid,  binding  and  enforceable,  or, if such  provision  cannot be
modified or restricted,  then such provision shall, as to such jurisdiction,  be
deemed to be excised from this Agreement;  provided,  however,  that the binding
effect and enforceability of the remaining provisions of this Agreement,  to the
extent that the economic  benefits  conferred upon the parties by virtue of this
Agreement remain substantially unimpaired,  shall not be affected or impaired in
any manner, and that any such invalidity,  illegality or  unenforceability  with
respect to such  provisions  shall not invalidate or render  unenforceable  such
provision in any other jurisdiction.

                                       -8-


<PAGE>


                  IN  WITNESS  WHEREOF,  the  parties  have duly  executed  this
Agreement as of the date first above written.



                                            SYNAPTIC PHARMACEUTICAL CORPORATION



                                            By:/s/ Kathleen P. Mullinix
                                               -----------------------------
                                            Name:  Kathleen P. Mullinix
                                            Title: Chairman, President and
                                                     Chief Executive Officer

                                               /s/ Robert L. Spence
                                               ------------------------------
                                                   Robert L. Spence



                                      -9-

                                                                EXHIBIT 10.38
                                                                -------------

                              Cooperation Agreement



           entered into as of January 12, 1998 (the "EFFECTIVE DATE" )


                                     between

                                 Grunenthal GmbH
                                  Zieglerstr. 6
                                  52078 Aachen
                           Federal Republic of Germany

                          - hereinafter "GRUNENTHAL" -


                                       and


                       Synaptic Pharmaceutical Corporation
                                215 College Road
                             Paramus, NJ 07652-1431
                                      U S A

                           - hereinafter "SYNAPTIC" -


                                       1


<PAGE>


                                Table of Contents



                                                                            Page
Article 1   Definitions                                                       3
Article 2   Cooperation, Implementation of Projects                           7
Article 3   Management and Planning Projects;                                14
               Reports and Exchange of Information
Article 4   Early Stage of Projects                                          20
Article 5   Advanced Development Stage of Projects                           24
Article 6   Post-Advanced Development Stage Production and Marketing         28
Article 7   Patent Protection                                                29
Article 8   License Grants; Restrictions on Use of Technology
               and Patent Rights                                             31
Article 9   Reimbursement or Other Payments of Costs                         32
Article 10  Records and Reports, Inspection                                  33
Article 11  Confidentiality                                                  34
Article 12  Termination of Projects                                          35
Article 13  Term and Termination of Agreement                                36
Article 14  Effect of Termination or Expiration of Agreement                 37
Article 15  Governing Law and Arbitration                                    39
Article 16  Concluding Provisions                                            39





                                       2
<PAGE>


                                   Witnesseth


         WHEREAS,  SYNAPTIC and GRUNENTHAL are each actively conducting research
directed at discovering and developing a variety of therapeutic compounds;

         WHEREAS,  SYNAPTIC  has  expertise  in the  discovery  and  cloning  of
receptor  genes,  the  development of binding and functional  assays that employ
cloned  receptors  for use in  drug  discovery  programs,  and  the  design  and
discovery of compounds that act at the receptors of interest;

         WHEREAS,  SYNAPTIC  has  utilized  its  expertise to discover and clone
genes that code for  receptors  that have been  implicated  in pain,  to develop
binding and  functional  assays that  employ  such  receptors  and to design and
discover compounds that are selective for such receptors;

         WHEREAS,  GRUNENTHAL  has  compounds  that it would  like to  screen at
certain receptors cloned by SYNAPTIC,  and has expertise in optimizing candidate
compounds and in evaluating them in  pharmacological  models,  including in vivo
pain model systems;

         WHEREAS, SYNAPTIC has compounds that it would like to have evaluated in
certain of  GRUNENTHAL's  pharmacological  models,  including in vivo pain model
systems, and has expertise in optimizing candidate compounds;

         WHEREAS,  GRUNENTHAL has expertise in preclinical and clinical  testing
of candidate  compounds,  getting  regulatory  approval  and in  commercializing
pharmaceutical products;

         WHEREAS,  SYNAPTIC and GRUNENTHAL  have expressed a mutual  interest in
utilizing their skills and resources in a  collaborative  effort to discover and
develop   agonists  and  antagonists  of  mutually  agreed  upon  receptors  for
alleviating pain; and

         WHEREAS,  SYNAPTIC and GRUNENTHAL may in the future determine to expand
their  collaborative  effort  to  discover  and  develop  compounds  that act at
molecular targets in addition to receptors.

         NOW,  THEREFORE,  in consideration of the premises and mutual covenants
hereinafter set forth, the parties agree as follows:


                                    Article 1
                                   Definitions

1.1       ADVANCED  DEVELOPMENT STAGE shall mean, with respect to each party and
          each  CANDIDATE  resulting  from a PROJECT,  the stage of  development
          which (i) begins with the  determination by the STEERING  COMMITTEE to
          commence   PHASE  III  TRIALS   involving  such  CANDIDATE  (it  being
          understood that such determination


                                       3
<PAGE>

          shall be made following  completion
          of phase IIa clinical trials) and (ii) ends on the earlier of the date
          of  the  termination  by  the  applicable  party  of  the  development
          activities  with  respect  to such  CANDIDATE  or the  receipt by such
          applicable  party  of final  approval  from at  least  one  regulatory
          authority that allows marketing of such CANDIDATE to begin.

1.2      ALPHA-2 PROJECT shall have the meaning set forth in Section 2.2.4.

1.3      AVAILABLE TARGETS shall mean TARGETS,  including the TARGETS identified
         in  Schedule  I,  which  fall into one of the  categories  set forth in
         Section 2.2.1 as determined by the STEERING COMMITTEE.  Notwithstanding
         anything contained in here to the contrary,  a TARGET shall cease to be
         an AVAILABLE TARGET at such time as it becomes an EXCLUDED TARGET.

1.4      BACKGROUND  TECHNOLOGY shall mean, with respect to either party and any
         AVAILABLE TARGET which is the focus of a PROJECT,  all know-how,  trade
         secrets,   assays,   inventions,    experimental   data,   experimental
         procedures,  technology,  biological, compounds and other materials and
         other  proprietary  information  which were  discovered or developed by
         such party,  which relate to such TARGET and which existed prior to the
         initiation  of  a  PROJECT  relating  to  such  TARGET.   In  addition,
         BACKGROUND   TECHNOLOGY  shall  mean  and  include,   with  respect  to
         GRUNENTHAL and any other AVAILABLE TARGET, all know-how, trade secrets,
         assays,   inventions,   experimental  data,  experimental   procedures,
         technology,   biological   compounds  and  other  materials  and  other
         proprietary   information,   which  were  discovered  or  developed  by
         GRUNENTHAL  which relate to such TARGET and which  existed prior to the
         initiation  of a PROJECT  relating  to such  TARGET if such  PROJECT is
         initiated  or at any time  during  the term of this  Agreement  if such
         PROJECT is not initiated.

1.5      BUDGET shall have the meaning set forth in Section 3.1.3(d).

1.6      CANDIDATE  shall mean a COMPOUND which is a LEAD for which the decision
         to start a Good Laboratory  Practices four-week  toxicology studies has
         been made by the STEERING  COMMITTEE  during a PROJECT.  Such  decision
         will be made at such time as the STEERING  COMMITTEE  determines that a
         LEAD  satisfies  the criteria  established  by the  STEERING  COMMITTEE
         regarding    the   desired    pharmacological    profile,    stability,
         pharmacokinetic profile, bioavailability,  synthesis and safety profile
         (safety pharmacology,  toxicology, side-effect profile) and lack of any
         blocking third party patent.

1.7      COMMON STUDIES shall have the meaning set forth in Section 3.1.3(a) and
         may be conducted worldwide by each party, or its subsidiaries.

1.8      COMPOUND  shall mean a chemical  substance with a purity of 90% or more
         where the structure is  characterized  by standard  analytical  methods
         (e.g., NMR, MS, IR, etc.).

1.9      EARLY  DEVELOPMENT  STAGE shall  mean,  with  respect to any  CANDIDATE
         resulting  from  a  PROJECT,  the  stage  which  (i)  begins  with  the
         determination  of the

                                       4
<PAGE>

         STEERING  COMMITTEE to commence  Good  Laboratory
         Practices four-week toxicology studies involving the CANDIDATE and (ii)
         ends on the  earlier  of the date of the  termination  by the  STEERING
         COMMITTEE of the development  activities with respect to such CANDIDATE
         or the  determination  by the STEERING  COMMITTEE to commence PHASE III
         TRIALS  involving  such  CANDIDATE (it being  understood  that any such
         determination shall be made following  completion of phase IIa clinical
         trials).

1.10     EMEA shall mean the European Medicines Evaluation Agency.

1.11     EMEA STUDIES  shall have the meaning set forth in Section  3.1.3(a) and
         shall be conducted in the GRUNENTHAL TERRITORY.

1.12 EVALUATION  COMMITTEE  shall mean the committee  formed pursuant to Section
3.3.

1.13     EXCLUDED TARGET shall mean (i) any alpha 1 adrenergic receptor, galanin
         receptor,  neuropeptide Y receptor (other than the Y2 and Y4 receptors)
         or serotonin receptor (other than the 5HT-4 receptor),  (ii) any TARGET
         which was an AVAILABLE TARGET and became an EXCLUDED TARGET pursuant to
         Section 2.2.7 or pursuant to a decision by the STEERING COMMITTEE prior
         to the expiration of the  applicable  period set forth in Section 2.2.1
         and (iii) any  AVAILABLE  TARGET which was at one time but is no longer
         the focus of a PROJECT  and/or is no longer the focus of  ongoing  drug
         development activities of GRUNENTHAL pursuant to this Agreement.

1.14     EXISTING COLLABORATIVE PARTNERS shall mean Eli Lilly and Company, Merck
         & Co., Inc., Novartis Pharma A.G., and the Warner-Lambert Company.

1.15     FDA shall mean the United States Food and Drug Administration.

1.16     FDA STUDIES  shall have the meaning set forth in Section  3.1.3(a)  and
         shall be conducted in the SYNAPTIC TERRITORY.

1.17     GRUNENTHAL  TERRITORY shall mean Europe (including CIS and Turkey), and
         all  countries  of Central  America  and South  America  including  the
         Caribbean  but   excluding  any  country  or  island  within   SYNAPTIC
         TERRITORY.

1.18     HIT shall mean a COMPOUND which exhibits  affinity for a and functional
         activity  at a TARGET  and which is  approved  for  testing  in in vivo
         models by the RESEARCH COMMITTEE.

1.19     LEAD shall mean a COMPOUND  which (i) is or is derived from a HIT, (ii)
         belongs to a patentable class of chemical entities and/or is patentable
         with  regard to its  preparation  procedure  and (iii) in  experimental
         animal  models  has  an in  vivo  therapeutic  profile  that  satisfies
         criteria set by the STEERING COMMITTEE.

                                       5
<PAGE>

1.20     NET SALES shall mean,  with  respect to any  PRODUCT,  the gross amount
         invoiced to non-affiliated  customers for sales of such PRODUCT in each
         calendar year, after deduction for the following  items,  each of which
         shall be determined in accordance with the normal accounting  practices
         of the party selling the PRODUCT:

         (i)      trade, quantity and cash discounts or rebates actually allowed
                  to such customers;

         (ii)     credits,  rebates,  charge-back  rebates,   reimbursements  or
                  similar  payments  actually granted or given to such customers
                  for PRODUCTS previously sold;

         (iii)    any tax, tariff, duty or other governmental charge (other than
                  income or similar tax) levied on the sale,  transportation  or
                  delivery of such PRODUCT and borne by the seller thereof;

         (iv)     any charge for freight or insurance actually borne by the
                  customer; and

         (v)      allowances for bad debt expense.

1.21     OTHER  TERRITORIES  shall mean all  countries  in the world  other than
         those included in the SYNAPTIC TERRITORY or the GRUNENTHAL TERRITORY.

1.22     PAIN shall mean acute or  chronic,  weak,  moderate to severe or severe
         pain (i) generated by central and/or peripheral mediators, whose action
         is  blocked  by  analgesic  and/or  antiphlogistic  agents  or  (ii) is
         associated with migraine headache.

1.23     PATENT  RIGHTS  shall mean  patent  applications  and  patents to which
         either  SYNAPTIC or GRUNENTHAL  have rights.  Claims included in PATENT
         RIGHTS which are not covered by this Agreement are excluded.

1.24     PHASE III TRIALS shall mean trials that fulfill at least the  following
         criteria:  pivotal,  confirmatory,  controlled  trials  satisfying  FDA
         and/or EMEA guidelines.

1.25     PRODUCT  shall mean any human  pharmaceutical  product for  alleviating
         PAIN which includes as an active ingredient a CANDIDATE.

1.26     PROJECT shall have the meaning set forth in Section 2.2..

1.27     PROJECT  TECHNOLOGY  shall  mean,  with  respect  to any  PROJECT,  all
         know-how,  trade  secrets,  assays,   inventions,   experimental  data,
         experimental  procedures,  technology,  biological,  chemical and other
         materials and other proprietary information which relate to therapeutic
         uses of  COMPOUNDS  the  mechanism  of  action  of which  involves  the
         TARGET(S) of the PROJECT and which are  discovered or developed  during
         the  PROJECT  TERM of the  PROJECT or during the period  following  the
         PROJECT TERM in which development or marketing  activities with respect
         to a CANDIDATE  resulting  from or  relating to such  PROJECT are being
         conducted.

                                       6
<PAGE>

1.28     PROJECT TERM shall mean, with respect to any PROJECT, the period during
         which such PROJECT is conducted pursuant to this Agreement.

1.29     RESEARCH  COMMITTEE shall mean each of the joint research  committee(s)
         formed pursuant to Section 3.2.1.

1.30     RESEARCH  STAGE shall mean,  with respect to any PROJECT,  the stage of
         the PROJECT during which the parties seek  CANDIDATES for the TARGET(S)
         of the PROJECT.

1.31 STEERING  COMMITTEE shall mean the joint steering committee formed pursuant
to Section 3.1.1.

1.32     SYNAPTIC  TERRITORY  shall  mean the United  States of America  and its
         territories, Canada and its territories and Mexico.

1.33 TARGET  shall mean a gene product  (e.g.,  receptor,  transporter,  enzyme,
transcription factor, etc.).

1.34     TERRITORIES  shall mean (i) with  respect  to  SYNAPTIC,  the  SYNAPTIC
         TERRITORY and the OTHER  TERRITORIES,  (ii) with respect to GRUNENTHAL,
         the  GRUNENTHAL  TERRITORY  and the OTHER  TERRITORIES,  and (iii) with
         respect  to  both  parties,  the  SYNAPTIC  TERRITORY,  the  GRUNENTHAL
         TERRITORY and the OTHER TERRITORIES.

         The plural  includes  the  singular  and vice versa when the context so
admits.


                                    Article 2
                     Cooperation, Implementation of Projects

2.1      Field. During the term of this Agreement, the parties shall engage in a
         cooperation   focused  on  the   identification   and   development  of
         pharmaceutical products for the alleviation of PAIN in humans.

2.2      Implementation.

         2.2.1    Categorization   and   Reservation  of  Targets.   Any  TARGET
                  identified  by SYNAPTIC  which falls into any of the following
                  categories as determined by the STEERING COMMITTEE,  including
                  each of the TARGETS  set forth in Schedule I attached  hereto,
                  shall  automatically  be an  AVAILABLE  TARGET  and  shall  be
                  exclusively  reserved for this cooperation with respect to the
                  identification   and   development   of   COMPOUNDS   for  the
                  alleviation of PAIN for a period  according to its category as
                  set forth below:

                                       7
<PAGE>


                  i) Category I:
                  Any TARGET with in-vivo  evidence for mediation of PAIN,  with
                  COMPOUNDS  available  that  have a minimum  affinity  for such
                  TARGET as defined by the  STEERING  COMMITTEE.  These  TARGETS
                  shall be  AVAILABLE  TARGETS  for a period  of one year  after
                  their  identification by the STEERING  COMMITTEE as Category I
                  TARGETS,  unless  subsequently  recategorized  by the STEERING
                  COMMITTEE,  or  determined  by the  STEERING  COMMITTEE  to be
                  EXCLUDED TARGETS.

                  ii) Category II:
                  Any TARGET  with  in-vitro  and/or  theoretical  evidence  for
                  mediation  of  PAIN,  with  COMPOUNDS  available  that  have a
                  minimum  affinity  for such TARGET as defined by the  STEERING
                  COMMITTEE.  These  TARGETS  shall be  AVAILABLE  TARGETS for a
                  period  of  three  years  after  their  identification  by the
                  STEERING COMMITTEE as Category II TARGETS, unless subsequently
                  recategorized by the STEERING COMMITTEE,  or determined by the
                  STEERING COMMITTEE to be EXCLUDED TARGETS.

                  iii) Category III:
                  Any  speculative  TARGETS  identified  within tissue  (meaning
                  tissue as listed in  Schedule  II) known to be involved in the
                  transmission or inhibition of PAIN,  with COMPOUNDS  available
                  that have a minimum affinity for such TARGET as defined by the
                  STEERING  COMMITTEE.  These TARGETS shall be AVAILABLE TARGETS
                  for a period of five years after their  identification  by the
                  STEERING   COMMITTEE   as   Category   III   TARGETS,   unless
                  subsequently  recategorized  by  the  STEERING  COMMITTEE,  or
                  determined by the STEERING COMMITTEE to be EXCLUDED TARGETS.

                  iv) Category IV:
                  Any  speculative  TARGET  identified  within  tissue  (meaning
                  tissue as listed in  Schedule  II) known to be involved in the
                  transmission   or  inhibition  of  PAIN,   with  no  COMPOUNDS
                  available.  These TARGETS  shall be AVAILABLE  TARGETS for the
                  term of this Agreement,  unless subsequently  recategorized by
                  the  STEERING   COMMITTEE,   or  determined  by  the  STEERING
                  COMMITTEE to be EXCLUDED TARGETS.

                  Any AVAILABLE  TARGET may be switched by  determination of the
                  STEERING   COMMITTEE   from  one   category   to  another  and
                  accordingly be an AVAILABLE  TARGET for a different  period of
                  time.

                  In addition,  an AVAILABLE  TARGET may by determination of the
                  STEERING  COMMITTEE  become an  EXCLUDED  TARGET  prior to the
                  expiration of the period of time applicable to the category in
                  which such TARGET falls.

                                       8
<PAGE>

                  Notwithstanding  anything  in the  contrary  set  forth in the
                  first  paragraph of this  Section  2.2.1,  if,  within 90 days
                  following  the  date  that  GRUNENTHAL  is first  notified  in
                  writing of the  identification  by  SYNAPTIC  of a new TARGET,
                  GRUNENTHAL  provides  written  notice to  SYNAPTIC  that it is
                  rejecting such TARGET as an AVAILABLE TARGET, then such TARGET
                  shall not become an AVAILABLE  TARGET and  thereafter  neither
                  party  shall  have any  obligation  to the  other  party  with
                  respect to such TARGET.

     2.2.2        Evaluation  of Available  Targets.  The  EVALUATION  COMMITTEE
                  shall,  on a regular  basis,  review the list of the AVAILABLE
                  TARGETS, as well as the data relating to such TARGETS that are
                  available at the time, and formulate for  consideration by the
                  STEERING COMMITTEE recommendations regarding the initiation of
                  new PROJECTS and the appropriate  prioritization  of AVAILABLE
                  TARGETS based upon their perceived value as potential  targets
                  of pharmaceutical  products for the alleviation of PAIN. In an
                  effort to generate  data  regarding  AVAILABLE  TARGETS,  each
                  party shall be obliged to perform  High  Throughput  Screening
                  for  a  minimum  number  of  AVAILABLE  TARGETS  per  year  as
                  determined by the STEERING  COMMITTEE.  It shall be SYNAPTIC's
                  responsibility to attempt to develop  pharmacological tools or
                  design  leads  for  Category  IV  TARGETS.   While  GRUNENTHAL
                  acknowledges  and agrees that  SYNAPTIC may seek the help of a
                  third party in developing the pharmacological tools and design
                  leads  contemplated  by  the  preceding   sentence,   SYNAPTIC
                  acknowledges   and  agrees  that  GRUNENTHAL   shall  have  no
                  obligation,  financial or  otherwise,  with  respect  thereto.

    2.2.3         Initiation  of  Projects.   In   furtherance   of  the
                  cooperation,  during the term of this Agreement,  the STEERING
                  COMMITTEE   shall,   on  a  quarterly   basis,   consider  the
                  recommendations  of the  EVALUATION  COMMITTEE  and  determine
                  whether  to  initiate  new  joint  research  and   development
                  projects  with one or more  AVAILABLE  TARGETS as their focus.
                  The  purpose  of any  such  project  will be to  identify  and
                  develop  jointly,  up to the commencement of PHASE III TRIALS,
                  CANDIDATES  that (i)  alleviate  PAIN in humans  and (ii) have
                  primary  mechanism  of action  involving  the  TARGET(S).  For
                  convenience  of  reference,   each  research  and  development
                  project  initiated  as  contemplated  by this  Section  2.2 is
                  referred to herein as a "PROJECT".  It is  contemplated by the
                  parties  that at any  point  in time  they  may be  conducting
                  several PROJECTS pursuant to this Agreement.

                  The parties agree that all TARGETS  and  COMPOUNDS  listed  in
                  Schedule I and Schedule III shall be provided exclusively from
                  SYNAPTIC  to  GRUNENTHAL  under the  terms of this  Agreement,
                  subject to any  limitations  imposed or  contemplated  by this
                  Agreement,  including,  without  limitation,  such limitations
                  imposed or  contemplated  by Section 2.2.1,  2.4 and/or 8.1.1.
                  GRUNENTHAL   acknowledges   and  agrees  that   SYNAPTIC   has
                  agreements  with its  EXISTING  COLLABORATIVE  PARTNERS  which
                  relate to EXCLUDED  TARGETS.  The parties  agree that EXCLUDED
                  TARGETS

                                       9
<PAGE>


                  as  defined  in Section  1.13 (i) are not part of this
                  Agreement but available to SYNAPTIC's  EXISTING  COLLABORATIVE
                  PARTNERS.

                  SYNAPTIC  warrants  that  nothing in the  agreements  with its
                  EXISTING  COLLABORATIVE  PARTNERS contradicts to any provision
                  of  this  Agreement,  however,  GRUNENTHAL  acknowledges  that
                  pursuant to such  agreements,  SYNAPTIC is not  granting,  and
                  will not in the future grant  (unless in the future it is in a
                  position to do so), GRUNENTHAL a license to use its technology
                  to develop  compounds  that bind any TARGET  with an  affinity
                  which is less than ten times  greater than their  affinity for
                  any galanin  receptor,  any serotonin  receptor  (other than 5
                  HT-4  receptor),  any  alpha  1  adrenergic  receptor  or  any
                  neuropeptide Y receptor  (other than the Y 2 or Y 4 receptor).
                  The STEERING COMMITTEE, in initiation PROJECTS, in designating
                  CANDIDATES and in  fulfillment  of its other  responsibilities
                  under this  Agreement,  shall act in a manner  consistent with
                  the foregoing.

     2.2.4        Initial  Project.   The  parties  have  determined  by  mutual
                  agreement that the alpha-2a,  -2b and -2c adrenergic receptors
                  are of  particular  interest  to their  cooperation  and have,
                  accordingly,  selected such  receptors as the TARGETS of their
                  initial PROJECT. Such PROJECT (the,,ALPHA 2 PROJECT") shall be
                  initiated  beginning as of the  EFFECTIVE  DATE.  Set forth on
                  Schedule III attached  hereto is a list of SYNAPTIC  COMPOUNDS
                  and a list of GRUNENTHAL COMPOUNDS, in each case identified by
                  code  number  which  may be  active  at one or  more  of  such
                  receptors  and which,  as of the EFFECTIVE  DATE,  are, in the
                  judgment of each party,  available as pharmacological tools or
                  design leads for use in the ALPHA-2 PROJECT. Also set forth in
                  said  Schedule  III is a  complete  list of  GRUNENTHAL's  and
                  SYNAPTIC's  present PATENT RIGHTS, if any,  concerning ALPHA 2
                  PROJECTS.

         2.2.5    Other Available Targets. Schedule I attached hereto sets forth
                  a list of the AVAILABLE TARGETS,  as of the EFFECTIVE DATE. As
                  of the  EFFECTIVE  DATE  such  AVAILABLE  TARGETS  are  not to
                  SYNAPTIC's  knowledge,  covered  by  issued  patents  of third
                  parties and as of such date could  therefore be  considered by
                  the parties as the potential subjects of additional  PROJECTS.
                  At such time, if ever, as any such AVAILABLE TARGET becomes an
                  EXCLUDED  TARGET,  Schedule  I  shall  be  deemed  amended  by
                  deleting such TARGET therefrom.

                  In case a third party patent  covering an AVAILABLE  TARGET is
                  issued to such third party by the patent  office in the United
                  States,  The European  Patent  Office or the patent  office in
                  Japan,  SYNAPTIC and  GRUNENTHAL  shall consult on the further
                  proceedings with respect to such AVAILABLE TARGET.

     2.2.6        Other Potential Sources of Available Targets. The parties have
                  discussed  possible  sources for AVAILABLE  TARGETS that could
                  provide  the basis for  additional  PROJECTS,  and agree  that
                  SYNAPTIC shall present new, if any,


                                       10
<PAGE>



                  AVAILABLE  TARGETS to the
                  STEERING COMMITTEE for  categorization  every six month period
                  following  the  EFFECTIVE  DATE.  Such  AVAILABLE  TARGETS may
                  result from SYNAPTIC's molecular biology efforts. In addition,
                  the parties,  through  their  representatives  on the STEERING
                  COMMITTEE,  may (a) identify  AVAILABLE  TARGETS which,  based
                  upon   the   scientific   literature,   are   known  to  exist
                  pharmacologically  but have not yet been  cloned  or have been
                  cloned  by a third  party but are not  proprietary  to a third
                  party  and (b)  direct  SYNAPTIC  to  attempt  to  clone  such
                  receptors.  Finally,  it is  contemplated  that such AVAILABLE
                  TARGETS may result from certain  genomics  efforts on the part
                  of SYNAPTIC focused on spinal and supraspinal tissues.

     2.2.7        Available Targets becoming Excluded Targets. In the event that
                  during  the  periods  set  forth  in  Section  2.2.1  for each
                  AVAILABLE  TARGET the  parties do not  initiate a new  PROJECT
                  with such AVAILABLE  TARGET as its focus,  then SYNAPTIC shall
                  be free to convert such AVAILABLE TARGET to an EXCLUDED TARGET
                  by giving GRUNENTHAL written notice. Thereafter SYNAPTIC shall
                  have the right to exploit  such TARGET  independently  or with
                  one or  more  third  parties  in  each  case  without  further
                  liability  or other  obligation,  financial or  otherwise,  to
                  GRUNENTHAL,  and  GRUNENTHAL's  right to exploit  such  TARGET
                  using SYNAPTIC  BACKGROUND  TECHNOLOGY and PROJECT  TECHNOLOGY
                  shall   immediately  and  indefinitely   cease  to  exist  and
                  GRUNENTHAL's  right to exploit such TARGET  without the use of
                  such  SYNAPTIC  BACKGROUND  TECHNOLOGY  and  SYNAPTIC  PROJECT
                  TECHNOLOGY  shall  immediately  cease to exist for a period of
                  two  years.  2.3  Structure.  Each  PROJECT  shall  include  a
                  RESEARCH STAGE and may include an EARLY DEVELOPMENT STAGE with
                  respect  to one  or  more  CANDIDATES  identified  during  the
                  RESEARCH   STAGE.   Following  the  conclusion  of  the  EARLY
                  DEVELOPMENT  STAGE with respect to a  CANDIDATE,  the parties,
                  through the STEERING  COMMITTEE,  may determine to initiate an
                  ADVANCED DEVELOPMENT STAGE with respect to the CANDIDATE.  The
                  rights and  obligations  of the  parties  during each of these
                  stages,  as well as their rights and obligations  with respect
                  to the production and marketing of each PRODUCT relating to or
                  arising out of a PROJECT, are described herein.

2.4      No Independent Research or Research with Third Parties within Field. It
         is the intent of the  parties  that they be  exclusive  partners in the
         identification  and/or development of COMPOUNDS for alleviating PAIN in
         humans  to the  extent  that such  COMPOUNDS  act  through  one or more
         TARGETS that are the focus of one or more PROJECTS or  subsequent  drug
         development  or  marketing   activities  pursuant  to  this  Agreement.
         Accordingly,  without  the  approval  of the other  party,  during  the
         PROJECT TERM of any PROJECT and the period  following  the PROJECT TERM
         in  which  development  or  marketing  activities  with  respect  to  a
         CANDIDATE  resulting  from  or  relating  to  such  PROJECT  are  being
         conducted,  neither party shall conduct, either independently or with a
         third party,  any research  directed toward the  identification  and/or
         development of COMPOUNDS for  alleviating  PAIN in humans to 



                                       11
<PAGE>

         the extent
         that any of the TARGETS  through  which such  COMPOUNDS  act is (i) the
         same as a TARGET of such a PROJECT,  (ii) the same as a TARGET  through
         which the  CANDIDATE  acts, or (iii) is an AVAILABLE  TARGET  provided,
         however,  that  the  foregoing  prohibition  shall  not  apply  to  the
         collaborative  project being conducted by SYNAPTIC and The DuPont Merck
         Pharmaceutical Company pursuant to the Collaborative Research Agreement
         dated February 5, 1996; provided further,  however,  that the foregoing
         prohibition  shall not apply to  SYNAPTIC's  research  relating  to the
         identification  and development of pharmaceutical  products that act at
         one or more of the EXCLUDED TARGETS.

2.5      In-Licensing Opportunities.  If, during the PROJECT TERM of any PROJECT
         or during the period following the PROJECT TERM in which development or
         marketing  activities  with  respect to a CANDIDATE  resulting  from or
         relating to such PROJECT are being conducted, either party shall become
         aware of any  opportunity to in-license for potential  development of a
         pharmaceutical  product for  alleviating  PAIN in humans a compound the
         mechanism  of action of which  involves a TARGET of such PROJECT or any
         other  AVAILABLE  TARGET,  such party  shall  inform  the other  party.
         Neither party may consummate an agreement with respect to such compound
         unless both parties agree on the terms under which the  agreement  will
         be consummated.

2.6      Disclosure of Background Technology and Project Technology;  Use of
         Background Technology and Project Technology Outside Cooperation.

         2.6.1    Disclosure of Background  Technology  and Project  Technology.
                  If,  during  the  PROJECT  TERM of any  PROJECT  or during the
                  period  following  the PROJECT  TERM in which  development  or
                  marketing  activities  with  respect to a CANDIDATE  resulting
                  from or relating to such PROJECT are being  conducted,  either
                  party  should  discover or develop  BACKGROUND  TECHNOLOGY  or
                  PROJECT TECHNOLOGY,  such party shall disclose such BACKGROUND
                  TECHNOLOGY or PROJECT TECHNOLOGY to the other party.

     2.6.2        Use of Grunenthal Background Technology and Grunenthal Project
                  Technology  Relating to Targets for which an Indication  other
                  than  the  Alleviation  of  Pain  has  been   Identified.   If
                  GRUNENTHAL is the discovering or developing  party referred to
                  in Section 2.6.1 and such BACKGROUND TECHNOLOGY and/or PROJECT
                  TECHNOLOGY was not previously known by SYNAPTIC and relates to
                  the  use  of  a  TARGET  for  an  indication  other  than  the
                  alleviation of PAIN (a,,new indication"), then, SYNAPTIC shall
                  have exclusive rights to pursue the discovery independently or
                  with a third party,  and to seek and pursue patent  protection
                  thereon if GRUNENTHAL has not yet filed a patent  application.
                  In the event  that  SYNAPTIC  independently  commercializes  a
                  product  based upon such  discovery and which is covered by an
                  issued PATENT RIGHT of  GRUNENTHAL,  it shall pay GRUNENTHAL a
                  royalty  of 3 % of the NET  SALES of the  product  for the new
                  indication in countries in which such issued GRUNENTHAL PATENT
                  RIGHT exists.  In the event that SYNAPTIC licenses such issued
                  GRUNENTHAL  PATENT RIGHT to a third party,

                                       12
<PAGE>


                  SYNAPTIC shall pay
                  GRUNENTHAL  33 % of any royalty which  SYNAPTIC  receives from
                  the  third  party  in  respect  of any  such  PATENT  RIGHT in
                  countries in which such  GRUNENTHAL  PATENT RIGHT exists.  For
                  COMPOUNDS  provided by GRUNENTHAL Section 2.6.4 shall apply in
                  lieu of this Section 2.6.2.

         2.6.3    Use of Grunenthal Background Technology and Project Technology
                  Relating to Excluded  Targets for Pain.  If  GRUNENTHAL is the
                  discovering  or developing  party referred to in Section 2.6.1
                  and such BACKGROUND  TECHNOLOGY or PROJECT  TECHNOLOGY relates
                  to the use for PAIN of a TARGET  which  thereafter  became  an
                  EXCLUDED TARGET,  then SYNAPTIC shall have exclusive rights to
                  pursue the discovery  independently or with a third party, and
                  to  pursue  patent   protection   thereon,   with  no  further
                  obligation  to   GRUNENTHAL,   financial  or  otherwise.   For
                  COMPOUNDS  provided by GRUNENTHAL Section 2.6.4 shall apply in
                  lieu of this Section 2.6.3.

     2.6.4        Use of Compounds Included in Grunenthal  Background Technology
                  or  Grunenthal  Project  Technology.  In  connection  with the
                  exercise of its rights  under  Section  2.6.2  and/or  Section
                  2.6.3 above,  SYNPATIC  shall be  permitted  to use  COMPOUNDS
                  included in GRUNENTHAL BACKGROUND TECHNOLOGY and/or GRUNENTHAL
                  PROJECT TECHNOLOGY and to commercialize any products resulting
                  therefrom,  without  compensation to GRUNENTHAL,  financial or
                  otherwise;   provided,  however,  that  if  any  such  product
                  incorporates  the  compound  covered  by an issued  GRUNENTHAL
                  PATENT RIGHT,  SYNAPTIC shall pay GRUNENTHAL a royalty (a) 3 %
                  of the NET SALES of such  product in  countries  in which such
                  issued    GRUNENTHAL   PATENT   RIGHT   exists   if   SYNAPTIC
                  independently  commercializes such product and (b) 33 % of any
                  royalty which SYNAPTIC  receives from a third party in respect
                  of any such  PATENT  RIGHT if  SYNAPTIC  licenses  the  issued
                  GRUNENTHAL PATENT RIGHT to a third party.

     2.6.5        Use of Synaptic  Background  Technology  and Synaptic  Project
                  Technology   Relating  to  Chemistry.   GRUNENTHAL   shall  be
                  permitted to use SYNAPTIC  BACKGROUND  TECHNOLOGY and SYNAPTIC
                  PROJECT  TECHNOLOGY  relating to chemistry  for the purpose of
                  developing  compounds  useful for the alleviation of PAIN, the
                  mechanism  of  action  of which  involves  a  TARGET  which is
                  neither an EXCLUDED  TARGET nor an  AVAILABLE  TARGET.  In the
                  event that any product which incorporates any of such SYNAPTIC
                  BACKGROUND TECHNOLOGY or SYNAPTIC PROJECT TECHNOLOGY,  whether
                  or not patented or patentable  by SYNAPTIC,  is proposed to be
                  commercialized,  GRUNENTHAL shall promptly inform SYNAPTIC and
                  shall  negotiate  with  SYNAPTIC  in  good  faith  appropriate
                  compensation  to be  paid  to  SYNAPTIC  in  respect  of  such
                  TECHNOLOGY,   based  upon  its   relative   contribution   and
                  importance to such  product.  In case the parties are not able
                  to agree within 180 days on appropriate  compensation SYNAPTIC
                  shall be free to offer such  rights on such  products to


                                       13
<PAGE>

                  third
                  parties, and any right that GRUNENTHAL may have had under this
                  Section 2.6.5 and any right that GRUNENTHAL may have to market
                  such product shall automatically be forfeited thereafter.

     2.6.6        Request for Access to Blocking  Technology  and Patent Rights.
                  Prior to entering into a  collaboration  with a third party to
                  develop  compounds which (a) have as their mechanism of action
                  a TARGET  that is the  focus of a  PROJECT  and(b)  are for an
                  indication  other than the  alleviation of PAIN SYNAPTIC shall
                  use all  reasonable  efforts to seek from such party the right
                  to use, and to permit GRUNENTHAL to use, technology  resulting
                  from such  collaboration  and  related  patent  rights for the
                  development  of compounds for the  alleviation of PAIN. At the
                  time that SYNAPTIC and any such third party begin  negotiating
                  an agreement  covering such a  collaboration,  SYNAPTIC  shall
                  inform GRUNENTHAL and shall thereafter  regularly consult with
                  GRUNENTHAL  regarding  such  negotiation  as it relates to the
                  foregoing.   SYNAPTIC   shall   obtain  the  same  rights  and
                  conditions  as for  itself  also for  GRUNENTHAL's  use in the
                  GRUNENTHAL  TERRITORY or OTHER TERRITORIES for the alleviation
                  of PAIN. Any costs associated with  GRUNENTHAL's  obtaining or
                  exercising such right to use such technology shall be borne by
                  GRUNENTHAL.

         2.6.7    The rights granted in Section 2.6.2, 2.6.3, 2.6.4, 2.6.5 shall
                  be granted as long as such  technology or PATENT RIGHTS exists
                  and  shall  survive  the  termination  or  expiration  of this
                  Agreement   regardless  of  the  reason  of   termination   or
                  expiration  provided  however,  that the respective  party has
                  complied with its payment  obligation in connection  with such
                  rights.  In case the  respective  party is in  breach  of such
                  payment obligation Section 13.2 shall apply.


                                    Article 3
                      Management and Planning of Projects;
                       Reports and Exchange of Information

3.1      Steering Committee; Management Committee.

         3.1.1    Formation;  Composition.  A STEERING COMMITTEE shall be formed
                  promptly  following the EFFECTIVE  DATE, but in no event later
                  than 30 days  thereafter.  Each  party  shall be  entitled  to
                  appoint   three   members   of  its   staff   to  act  as  its
                  representatives on the STEERING COMMITTEE. Each party may from
                  time  to  time  change  its  representation  on  the  STEERING
                  COMMITTEE,  but shall  notify  the  other  party  promptly  in
                  writing of any such change.

         3.1.2 Responsibilities. The STEERING COMMITTEE shall be responsible for
the following:


                  (a)      designating  AVAILABLE  TARGETS to the categories set
                           forth  in  Section  2.2.1,   designating   which  new
                           PROJECTS shall be initiated,


                                       14

<PAGE>
                           determining  the timing
                           for each PROJECT, deciding which AVAILABLE TARGET may
                           become an  EXCLUDED  TARGET  prior to the  applicable
                           time   periods   set  forth  in  Section   2.2.1  and
                           determining  the minimum number of AVAILABLE  TARGETS
                           in  category  IV with  respect to which each party is
                           obliged  to  perform  High  Throughput  Screening  as
                           contemplated in Section 2.2.2;

                  (b)      devising,   in   collaboration   with  the   RESEARCH
                           COMMITTEE for each PROJECT,  an initial research plan
                           for the PROJECT  setting forth the principal goals to
                           be achieved during the RESEARCH STAGE of the PROJECT,
                           the principal  activities to be conducted during such
                           STAGE, the relative priorities of the parties and the
                           proposed  timetables  for  achieving  the  goals  and
                           conducting the activities;

                  (c)      establishing   criteria   regarding   pharmacological
                           profile,      stability,      pharmacokineticprofile,
                           bioavailability,  synthesis and safety  profile which
                           must be  satisfied  in order  for a LEAD to  become a
                           CANDIDATE;

                  (d)      establishing   criteria   regarding   the   in   vivo
                           therapeutic  profile which must be satisfied in order
                           for a COMPOUND to be considered a LEAD;

                  (e)      preparing  such  procedures  and mechanisms as may be
                           necessary   for  the  STEERING   COMMITTEE  and  each
                           RESEARCH  COMMITTEE to operate in a manner which will
                           ensure  the   efficient   conduct  of  each   PROJECT
                           hereunder;

                  (f)      deciding to start Good Laboratory Practices four-week
                           toxicology  studies with  respect to a LEAD,  thereby
                           rendering such LEAD a CANDIDATE;

                  (g)      monitoring and directing the activities of each
                           RESEARCH COMMITTEE;

                  (h)      preparing,  for review and approval by each party,  a
                           detailed  schedule  of  activities   proposed  to  be
                           conducted  during  the EARLY  DEVELOPMENT  STAGE with
                           respect  to each  CANDIDATE,  as  well as a  proposed
                           budget  of  costs  associated  with  certain  of such
                           activities  (such  proposed  budget to be prepared in
                           accordance with Section 3.1.3 below); and

                 (i)        monitoring  and directing the  activities  conducted
                            during the EARLY  DEVELOPMENT  STAGE with respect to
                            each CANDIDATE and, if determined to be appropriate,
                            proposing  for  consideration  and  approval by each
                            party, revisions to any previously approved schedule
                            of activities and/or budget.  The STEERING COMMITTEE
                            shall not, in any year, withhold its approval of any
                            increases in a previously  approved  BUDGET proposed
                            by one  party  so  long  as the  aggregate  of  such
                            
                                       15
<PAGE>


                            increases is less than 50% of the entire  BUDGET for
                            such  year.  To the  extent  that the  aggregate  of
                            proposed  increases  in any year  exceed  50% of the
                            entire BUDGET for such year, the STEERING  COMMITTEE
                            shall  not   unreasonably   withhold   its  approval
                            thereof.

                  (j)      determining  to commence  PHASE III TRIALS,  it being
                           understood  that  such  determiantion  shall  be made
                           following  the  completion  of  phase  II a  clinical
                           trials and no party shall block such determination.

         In   addition,   the   STEERING   COMMITTEE   shall   have  such  other
responsibilities as are set forth herein or contemplated hereby.


         3.1.3    Three Types of Studies; Preparation of Budget Covering Common
                   Studies Only.

                 (a)        It is  contemplated  by the parties that three types
                            of  studies  may  be  conducted   during  the  EARLY
                            DEVELOPMENT  STAGE with respect to a CANDIDATE:  (i)
                            those  studies  which both  parties  agree should be
                            conducted  as part of phase I and phase IIa clinical
                            trials  with  respect  to  the  CANDIDATE  in  order
                            ultimately to satisfy both FDA and EMEA requirements
                            (the,,COMMON  STUDIES");  (ii) those  studies  which
                            SYNAPTIC  believes  should be  conducted  as part of
                            phase I and phase IIa  clinical  trials with respect
                            to the CANDIDATE in order  ultimately to satisfy FDA
                            requirements  but which  GRUNENTHAL does not believe
                            need to be conducted in order  ultimately  to satisy
                            EMEA  requirements  (the,,FDA  STUDIES");  and (iii)
                            those studies which  GRUNENTHAL  believes  should be
                            conducted  as part of phase I and phase IIa clinical
                            trials  with  respect  to  the  CANDIDATE  in  order
                            ultimately  to satisfy EMEA  requirements  but which
                            SYNAPTIC  does not believe  need to be  conducted in
                            order   ultimately   to  satisfy  FDA   requirements
                            (the,,EMEA STUDIES").

                  (b)      The  proposed  budget of costs to be  prepared by the
                           STEERING  COMMITTEE for the EARLY  DEVELOPMENT  STAGE
                           with respect to a CANDIDATE pursuant to Section 3.1.2
                           (i) and (h) above shall  include the total  estimated
                           cost of conducting  the COMMON  STUDIES only, as well
                           as a  detailed  breakdown  of  the  costs  which  the
                           parties  expect  to incur in  conducting  the  COMMON
                           STUDIES  during  the  first 12  months  of the  EARLY
                           DEVELOPMENT STAGE.

                  (c)      Within  60 days  prior  to the  end of each  12-month
                           period during the EARLY DEVELOPMENT STAGE (or, if the
                           12-month period commences in January,  then within 90
                           days prior to the end of such  period),  the STEERING
                           COMMITTEE  shall  prepare  a new  detailed  budget of
                           costs  expected  to be  incurred  in  conducting  the
                           COMMON STUDIES during the subsequent  12-month period
                           and shall  submit it to each party for its review and
                           approval.


                                       16

<PAGE>
                  (d)      The budget  with  respect to each  CANDIDATE,  as the
                           same may be modified  from time to time and  approved
                           by the parties as provided in this  Section  3.1.3 or
                           in Section  3.1.2 above,  shall be referred to herein
                           as the ,,BUDGET."

     3.1.4        Initial   Meetings;   Initial  Research  Plans.  The  STEERING
                  COMMITTEE  shall meet promptly  following the EFFECTIVE  DATE,
                  but in no event later than 30 days  thereafter  (a) to devise,
                  in  collaboration  with the  RESEARCH  COMMITTEE,  the initial
                  research  plan for the  ALPHA-2  PROJECT and (b) to review the
                  available  scientific  data relating to the AVAILABLE  TARGETS
                  identified in Schedule I attached hereto,  so as to categorize
                  such TARGETS as  contemplated  by Section 2.2.1.  The STEERING
                  COMMITTEE shall also meet promptly following the determination
                  by the parties to initiate each new PROJECT as contemplated by
                  Section  2.2 to devise,  in  collaboration  with the  RESEARCH
                  COMMITTEE for such PROJECT,  the initial research plan for the
                  PROJECT.  The initial  research plan for each PROJECT shall be
                  subject to review and approval by each party. Modifications to
                  any initial  research  plan shall be made in  accordance  with
                  Section 3.6.

         3.1.5    Additional   Meetings;   Agendas  and  Minutes.  The  STEERING
                  COMMITTEE  shall  meet at least  quarterly  and shall  prepare
                  agendas and minutes for each of its meetings.

     3.1.6        Actions;  Resolution  of Issues by Management  Committee.  All
                  actions  taken and  decisions  made by the STEERING  COMMITTEE
                  shall be made in accordance with Section 3.4. Any issues which
                  cannot be resolved by the STEERING COMMITTEE shall be referred
                  to a MANAGEMENT  COMMITTEE,  comprising  one  individual  from
                  SYNAPTIC and one individual from  GRUNENTHAL,  for resolution.
                  The members of the MANAGEMENT  COMMITTEE are  currently,  from
                  SYNAPTIC: Kathleen P. Mullinix,  Chairman, President and Chief
                  Executive Officer; and from GRUNENTHAL:  Dr. E.P. Paques. Each
                  of SYNAPTIC  and  GRUNENTHAL  may from time to time change its
                  representation on the MANAGEMENT  COMMITTEE,  but shall notify
                  the other party promptly in writing of any such change.

3.2      Research Committees.

          3.2.1   Formation;  Composition.  A RESEARCH COMMITTEE for the ALPHA-2
                  PROJECT shall be formed promptly following the EFFECTIVE DATE,
                  but in no event later than 30 days thereafter. With respect to
                  each   additional   PROJECT   initiated   by  the  parties  as
                  contemplated  by Section  2.2, a RESEARCH  COMMITTEE  shall be
                  formed promptly,  but in no event later than 30 days following
                  the  determination  by the parties to initiate  such  PROJECT.
                  Each party shall be entitled to appoint  three  members of its
                  staff  to  act  as  its   representatives   on  each  RESEARCH
                  COMMITTEE.  Each  party  may  from  time  to time  change  its
                  representation on the RESEARCH COMMITTEE(S),  but shall notify
                  the other party  promptly of any such  change.

                                       17
<PAGE>
                  Each  RESEARCH
                  COMMITTEE  shall  report  to and  operate  under  the  overall
                  direction of the STEERING COMMITTEE.

         3.2.2  Responsibilities.  Each RESEARCH  COMMITTEE shall be responsible
for the following:

                  (a)      monitoring and directing the activities of the
                           scientists working on its PROJECT;

                  (b)      elaborating and coordinating action plans;

                  (c)      the economic use of capacities;

                  (d)      the fulfillment of the research plan for such
                           PROJECT; and

                  (e)      approving  COMPOUNDS which exhibit  affinity for, and
                           functional  activity  at, a TARGET which is the focus
                           of a PROJECT for testing in in vivo models.

         In   addition,   each   RESEARCH   COMMITTEE   shall  have  such  other
responsibilities as are set forth herein or contemplated hereby.

         3.2.3    Initial   Meetings;   Initial  Research  Plans.  The  RESEARCH
                  COMMITTEE   for  the  ALPHA-2   PROJECT  shall  meet  promptly
                  following  the  EFFECTIVE  DATE,  but in no event  later  than
                  thirty days thereafter,  to devise, in collaboration  with the
                  STEERING COMMITTEE, the initial research plan for the PROJECT.
                  The RESEARCH  COMMITTEE shall also meet promptly following the
                  determination  by the parties to initiate  each new PROJECT as
                  contemplated by Section 2.2 to devise,  in collaboration  with
                  the  STEERING  COMMITTEE,  the initial  research  plan for the
                  PROJECT.  Modifications  to any  such  plan  shall  be made in
                  accordance with Section 3.5.

         3.2.4    Additional  Meetings;   Agendas  and  Minutes.  Each  RESEARCH
                  COMMITTEE  shall  meet  at  least  quarterly.   Each  RESEARCH
                  COMMITTEE  shall  prepare  agendas and minutes for each of its
                  meetings.

         3.2.5    Actions.  All actions taken and decisions made by the RESEARCH
                  COMMITTEE  shall be made in  accordance  with Section 3.4. Any
                  issues  which  cannot be  resolved by the  RESEARCH  COMMITTEE
                  shall be referred to the STEERING COMMITTEE.


3.3      Evaluation Committee.

         3.3.1 Formation;  Composition;  An EVALUATION COMMITTEE shall be formed
         promptly  following  the EFFECTIVE  DATE.  Each party shall appoint one
         member of its staff to act as its  representative.  Each party may from
         time to time change its representation on the EVALUATION COMMITTEE, but
         shall  notify  the  other  party

                                       18
<PAGE>


         promptly  of  any  such  change.  The
         EVALUATION  COMMITTEE  shall  report to and  operate  under the overall
         direction of the STEERING COMMITTEE.

         3.3.2 Responsibilities;  The EVALUATION COMMITTEE shall with respect to
         each  AVAILABLE  TARGET prior to the  initiation of a PROJECT with such
         AVAILABLE TARGET as its focus, be responsible for the following:

         (a)  monitoring  and  directing  the  activities of the  scientists
              working on the  evaluation of any AVAILABLE TARGET;

         (b)  elaborating and coordinating action plans;

         (c)  the economic use of capacities;

         (d) the fulfillment of the evaluation plan for each AVAILABLE TARGET;

         (e)  selecting  COMPOUNDS which exhibit affinity for, and/or functional
              activity at, an AVAILABLE TARGET for testing in in vivo models;

         (f)  preparation of yearly reviews on the AVAILABLE  TARGETS  including
              recommendations  to the STEERING  COMMITTEE as to which  AVAILABLE
              TARGET may become an EXCLUDED TARGET and

         (g)  recommending  to the STEERING  COMMITTEE on a quaterly basis which
              AVAILABLE TARGETS, if any, should be switched from one category to
              another.

         In   addition   the   EVALUATION   COMMITTEE   shall  have  such  other
         responsibilities as are set forth herein or contemplated hereby.

3.4      Meetings.

         All actions and  decisions by the  MANAGEMENT  COMMITTEE,  the STEERING
         COMMITTEE  each  RESEARCH   COMMITTEE  and  the  EVALUATION   COMMITTEE
         (together referred to as  ,,COMMITTEE(S)")  shall be taken or made only
         if (i) at least one member of the respective COMMITTEE of each party is
         present  and acting on behalf of such party and (ii) only by  unanimous
         agreement  of  all  the  COMMITTEE  members  present.  However,  it  is
         envisaged by the parties  that all of the members of a COMMITTEE  shall
         be available at each meeting.  The  COMMITTEES may meet by telephone or
         in person, as determined by the respective  members of such committees;
         provided, however, that at least two meetings of the RESEARCH COMMITTEE
         shall be held in person each year.  Attendance at meetings  shall be at
         the respective expenses of the participating parties. The parties shall
         alternate the right to determine the location of each meeting.

                                       19
<PAGE>

3.5      Personnel and Resources.

         Each party shall commit such personnel, facilities, expertise and other
         resources  to each  PROJECT  as it may  determine  to be  necessary  to
         perform its  obligations  under the research plan for such PROJECT,  as
         the same  may be  modified  from  time to time in  accordance  with the
         provisions of this Agreement.

3.6      Modification of Research Plan(s).

         The STEERING  COMMITTEE  will review the research plan for each ongoing
         PROJECT at least quarterly and may approve any proposed changes thereto
         which  are not  material  in  nature.  Any  material  changes  that the
         STEERING  COMMITTEE  determines to be  appropriate in light of changing
         priorities  of the  PROJECT or  experience  gained in the course of the
         PROJECT shall be subject to review and approval by each party.

3.7      Conduct of Studies.

         All studies done in connection with the PROJECT(S) shall be carried out
         in  strict  compliance  with  all  applicable  laws,   regulations  and
         guidelines  governing  the  conduct of  research at the site where such
         studies are being conducted.


                                    Article 4
                             Early Stage of Projects

4.1      Research Stage.

         4.1.1    SYNAPTIC  Activities.   During  the  RESEARCH  STAGE  of  each
                  PROJECT,   SYNAPTIC   will  conduct  such  of  the   following
                  activities  as  the  STEERING   COMMITTEE   determines  to  be
                  appropriate:

                  (a)      make  its in  vitro  assay  systems  relating  to the
                           TARGET(S)  of  such  PROJECT  available  for  testing
                           COMPOUNDS  provided by GRUNENTHAL  and/or SYNAPTIC as
                           part of the PROJECT;

                  (b)      profile and characterize such COMPOUNDS to the extent
                           possible by the scope of its assay systems; and

                  (c) in conjunction with GRUNENTHAL attempt to generate LEADS.

         4.1.2    GRUNENTHAL  Activities.  During  the  RESEARCH  STAGE  of each
                  PROJECT,   GRUNENTHAL  will  conduct  such  of  the  following
                  activities  as  the  STEERING   COMMITTEE   determines  to  be
                  appropriate:

                  (a)      make  its in  vitro  assay  systems  relating  to the
                           TARGET(S)  of  such  PROJECT  available  for  testing
                           COMPOUNDS  provided by GRUNENTHAL  and/or SYNAPTIC as
                           part of the PROJECT;

                                       20
<PAGE>

                  (b)      profile and characterize such COMPOUNDS to the extent
                           possible by the scope of its assay systems;

                  (c)      evaluate the profile (e.g., stability,  side effects,
                           etc.) of such  COMPOUNDS in its in vivo assay systems
                           in PAIN; and

                  (d)      generate LEADS.

         4.1.3    Responsibility  for Costs. Each party shall be responsible for
                  its own costs incurred in connection with a PROJECT during the
                  RESEARCH STAGE of such PROJECT.


4.2      Early Development Stage.

         4.2.1    Coordination of Activities to be Conducted.

         (a)      All  activities  to be  conducted  with respect to a CANDIDATE
                  during  the  EARLY  DEVELOPMENT  STAGE  shall  be  subject  to
                  monitoring and direction by the STEERING COMMITTEE. GRUNENTHAL
                  shall be responsible for conducting all such activities, which
                  may include (but shall not be limited to) the following:

                  (i)      production   of  the   necessary   amount   of   Good
                           Manufacturing Practices (,,GMP") and non-GMP material
                           for   safety   pharmacological,   toxicological   and
                           pharmacokinetic  studies,  COMMON  STUDIES  and  EMEA
                           STUDIES;

                  (ii)     optimization of the synthesis route in order to allow
                           further    clinical    development   and   commercial
                           production;

                  (iii)    development of suitable application forms;

                  (iv)     conducting  the  necessary  safety   pharmacological,
                           toxicological  and   pharmacokinetic   studies,   all
                           according  to the  European  guidelines,  taking into
                           account requirements of the FDA as far as possible in
                           order to enable  safety (i.v.  and/or p.o.) trials to
                           enter into dose finding efficacy studies; and

                  (v)      conducting all phase I and phase IIa COMMON  STUDIES,
                           EMEA  STUDIES  and  FDA  STUDIES  necessary  for  the
                           commencement  of PHASE  III  TRIALS  (and  activities
                           relating thereto) .

         (b)      In addition to the activities  referred to in subparagraph (a)
                  above,  at  SYNAPTIC's  expense (as provided in Section  4.2.2
                  below),   GRUNENTHAL  will  conduct  at  its  discretion,   in
                  accordance  with FDA  requirements,  FDA  STUDIES  and related
                  activities requested by SYNAPTIC.  Such activities may

                                       21
<PAGE>

                  include
                  (but  shall not be limited  to)  production  of the  necessary
                  amount of GMP and non-GMP  material  necessary to conduct such
                  FDA STUDIES.

         4.2.2    Responsibility for Costs. Subject to Section 4.2.3, each party
                  shall be responsible for 50% of any costs incurred pursuant to
                  the BUDGET for a PROJECT.  GRUNENTHAL shall be responsible for
                  100% of any costs incurred in connection  with conducting EMEA
                  STUDIES and related activities.  SYNAPTIC shall be responsible
                  for 100% of any costs incurred in connection  with  conducting
                  FDA STUDIES and related activities.

         4.2.3    Election  to  Cease  Participation.  In case  one  party  (the
                  ,,nonparticipating party") determines after the identification
                  of a  CANDIDATE  by the  STEERING  COMMITTEE  and  prior to or
                  during  the  EARLY  DEVELOPMENT  STAGE  with  respect  to such
                  CANDIDATE  that it no longer  desires  to  participate  in the
                  development  of the  CANDIDATE,  it may  elect,  by  providing
                  written notice (the  ,,nonparticipation  notice") to the other
                  party  (the   ,,participating   party"),   to  terminate   its
                  participation, whereupon the following shall apply:

                  (a)      The   nonparticipating   party   shall  cease  to  be
                           obligated  pursuant  to  Section  4.2.2 for any costs
                           incurred in connection  with the CANDIDATE  following
                           such notification;

                  (b)      The participating  party may continue its development
                           activities with respect to such CANDIDATE,  but shall
                           inform the nonparticipating  party of the progress of
                           such  activities in writing no less  frequently  than
                           quarterly.  Such  activities may also be performed in
                           the  exclusive  TERRITORIES  of the  nonparticipating
                           party;

                  (c)      Subject to the other provisions of this Section 4.2.3
                           and Section 4.2.4, the  nonparticipating  party shall
                           cease to have any  marketing  or  other  rights  with
                           respect  to such  CANDIDATE,  and  the  participating
                           party shall be free to exploit the  CANDIDATE  in the
                           TERRITORIES of the nonparticipating party; and

                  (d)      The    participating     party    shall    pay    the
                           nonparticipating  party with  respect of any  PRODUCT
                           comprising such CANDIDATE


                          (i)   in the  nonparticipating  party's  exclusive
                                part of the  TERRITORY  a royalty  of 4 % of the
                                NET  SALES  or in the  event  the  participating
                                party  licenses  such  product to a third party,
                                33,3  %  of  any  compensation  payable  to  the
                                participating   party   by  such   third   party
                                whichever   is   higher    (determined    on   a
                                country-by-country basis) and/or

                          (ii)  in the OTHER TERRITORIES a royalty of 2 % of the
                                NET  SALES  or in the  event  the  participating
                                party  licenses  such  product


                                       22
<PAGE>

                                to a third party,
                                16,65  % of  any  compensation  payable  to  the
                                participating   party   by  such   third   party
                                whichever   is   higher    (determined    on   a
                                country-by-country basis). Section 5.1.2.5 shall
                                apply mutatis mutandis.


         4.2.4    Election to Recommence Participation. If, during the course of
                  the development of a CANDIDATE by the participating party, the
                  nonparticipating  party wants to join in again,  this shall be
                  possible  against a reimbursement of 50% of the costs incurred
                  by  the  participating  party  following  its  receipt  of the
                  nonparticipation  notice,  plus  a  surcharge  on  such  costs
                  determined  in  accordance  with  Schedule A, plus interest on
                  such   costs   for   the   period   from   the   date  of  the
                  nonparticipation notice to the date of reentry at the discount
                  rate, as long as the  nonparticipating  party's right of first
                  refusal has not been activated pursuant to Section 4.2.5. Such
                  right shall be deemed activated when the  participating  party
                  provides  the   notification   contemplated   thereby  to  the
                  nonparticipating party.

     4.2.5        Right of First Refusal.  In the event the participating  party
                  negotiates an agreement  with a third party  pursuant to which
                  such third party will  license the  CANDIDATE  with respect to
                  which the nonparticipating  party ceded its rights pursuant to
                  Section 4.2.3, it shall notify the  nonparticipating  party of
                  the  principal  terms of such  agreement and provide it with a
                  right of first refusal. The nonparticipating  party shall have
                  90 days  following such  notification  within which to provide
                  notice to the  participating  party of its  acceptance of such
                  principal  terms.  In the  event  the  nonparticipating  party
                  provides  such notice of  acceptance,  the  parties  shall use
                  their best  efforts to conclude an  agreement  within 180 days
                  thereafter.   Should  this  right  of  first  refusal  not  be
                  exercised  within the 90-day period or should an agreement not
                  be  concluded  within the 180-day  period,  the  participating
                  party  shall be free to  license  the  CANDIDATE  to the third
                  party  on  substantially   the  same  terms  provided  in  the
                  notification,  subject to the payment to the  nonparticipating
                  party of

                  (i)    in the  nonparticipating  party's exclusive part of the
                         TERRITORY  a royalty  of 4 % of the NET SALES or in the
                         event the participating  party licenses such product to
                         a third party,  33,3 % of any  compensation  payable to
                         the  participating  party by such third party whichever
                         is higher  (determined on a  country-by-country  basis)
                         and/or

                  (ii)   in the OTHER  TERRITORIES  a royalty  of 2 % of the NET
                         SALES or in the event the participating  party licenses
                         such  product  to  a  third  party,   16,65  %  of  any
                         compensation payable to the participating party by such
                         third  party  whichever  is  higher  (determined  on  a
                         country-by-country basis).

                  Section 5.1.2.5 shall apply mutatis mutandis.


                                       23

<PAGE>

         4.2.6    Access to Data Generated in Connection with Phase I, Phase IIa
                  or Phase IIb Clinical Trials.

                  (a)      All  data   generated   pursuant  to  COMMON  STUDIES
                           conducted during the EARLY  DEVELOPMENT  STAGE or the
                           ADVANCED   DEVELOPMENT   STAGE  with   respect  to  a
                           CANDIDATE   and   all    information    relating   to
                           manufacturing  and  formulation of such CANDIDATE and
                           generated  prior to the  commencement of the ADVANCED
                           DEVELOPMENT  STAGE shall be provided to both  parties
                           in the available data format at no charge.

                 (b)        All data generated pursuant to FDA STUDIES conducted
                            during the EARLY  DEVELOPMENT  STAGE or the ADVANCED
                            DEVELOPMENT  STAGE with respect to a CANDIDATE shall
                            (i) if reasonably  necessary to ensure  completeness
                            of a  registration  package  for such  CANDIDATE  in
                            Europe and if not generated pursuant to FDA STUDIES,
                            be provided to GRUNENTHAL at GRUNENTHAL's request in
                            the  available  data format at no charge and (ii) if
                            not reasonably necessary to ensure completeness of a
                            registration  package for such  CANDIDATE  in Europe
                            and  if  generated  pursuant  to  FDA  STUDIES,   be
                            provided to  GRUNENTHAL at  GRUNENTHAL's  request in
                            the available data format against  reimbursement  of
                            50% of the costs of conducting such studies,  plus a
                            surcharge of 10%.

                (c)         All  data   generated   pursuant  to  EMEA   STUDIES
                            conducted during the EARLY  DEVELOPMENT STAGE or the
                            ADVANCED   DEVELOPMENT   STAGE  with  respect  to  a
                            CANDIDATE  shall  (i)  if  reasonably  necessary  to
                            ensure  completeness  of a registration  package for
                            such  CANDIDATE  in  the  United  States  and if not
                            generated  pursuant to EMEA STUDIES,  be provided to
                            SYNAPTIC at SYNAPTIC's request in the available data
                            format  at no  charge  and  (ii)  if not  reasonably
                            necessary to ensure  completeness  of a registration
                            package for such  CANDIDATE in the United  States or
                            if generated  pursuant to EMEA STUDIES,  be provided
                            to SYNAPTIC at  SYNAPTIC's  request in the available
                            data  format  against  reimbursement  of  50% of the
                            costs of conducting  such studies,  plus a surcharge
                            of 10%.

                                    Article 5
                     Advanced Development Stage of Projects

5.1      Conduct of Activities During Advanced Development Stage.

         5.1.1    Activities  directed  towards  pursuing  Regulatory  Approval;
                  During  the  ADVANCED  DEVELOPMENT  STAGE  with  respect  to a
                  CANDIDATE, GRUNENTHAL in the GRUNENTHAL TERRITORY and SYNAPTIC
                  either  independently  or with a third  party in the  SYNAPTIC
                  TERRITORY  shall  be

                                       24

<PAGE>

                  responsible  for  diligently  conducting
                  activities,  including  PHASE  III  TRIALS,  directed  towards
                  pursuing  regulatory  approval for a PRODUCT,  comprising such
                  CANDIDATE.

                  The  parties  shall use  commercially  reasonable  efforts  to
                  achieve the approval for commencement of PHASE III TRIALS from
                  the EMEA or the FDA  respectively,  and thereafter to commence
                  such  PHASE  III  TRIALS  in  Europe  or  the  United   States
                  respectively.

                  In the event SYNAPTIC intends to seek a licensee for the above
                  mentioned  activities,  it shall use  commercially  reasonable
                  efforts  to cause  any such  licensee  to  commence  PHASE III
                  TRIALS - as  contemplated  above - as  promptly  as  possible,
                  recognizing  that if any such  licensee is going to  undertake
                  manufacturing  of  materials  or if SYNAPTIC or its  licensees
                  commission a TOLL  MANUFACTURER  to manufacture  such material
                  for such  PHASE  III  TRIALS,  certain  delays  may occur as a
                  result.  Such  delay  shall not  invoke  the  consequences  of
                  Section  5.1.2,  provided  however,  such  delay is in no case
                  longer than 12 months following the end of the two-year period
                  referred to in Section 5.1.2.

                  GRUNENTHAL  undertakes to support SYNAPTIC in its search for a
                  TOLL MANUFACTURER or licensee.

         5.1.2    Timeframe;   Consequences  of  Delay  to  Commence  Phase  III
                  Clinical Trials. In the event one party (the ,,delayed party")
                  has not commenced and pursued  diligently  PHASE III TRIALS in
                  its TERRITORY with respect to a CANDIDATE as  contemplated  in
                  Section 5.1.1.  within two years following the commencement of
                  PHASE III TRIALS ("PHASE III COMMENCEMENT  DATE") by the other
                  party (the ,,timely  party") in its TERRITORY  with respect to
                  such CANDIDATE as contemplated in Section 5.1.1. the following
                  shall apply:

                  The  delayed  party  shall  lose its  rights in its  exclusive
                  TERRITORY  and  the  OTHER   TERRITORIES  for  the  respective
                  PRODUCT,  giving  the  timely  party  the  option  to  receive
                  worldwide exclusive rights for such PRODUCT against

                  5.1.2.1   reimbursement  of the accumulated  costs incurred by
                            the delayed party with respect to such PRODUCT; and

                  5.1.2.2   a royalty of 6 % on the NET SALES of the  PRODUCT in
                            the exclusive TERRITORY of the delayed party; and

                  5.1.2.3   a royalty of 4 % on the NET SALES of the  PRODUCT in
                            the OTHER TERRITORIES.

                  5.1.2.4   In the event that the  timely  party  licenses  such
                            PRODUCT to a third  party,  the delayed  party shall
                            receive  the amount  calculated  pursuant to Section
                            5.1.2.1 and either


                                       25

<PAGE>

                            (i)    the amounts  calculated  according  to
                                   Section  5.1.2.2 and Section  5.1.2.3 above
                                   or

                            (ii)   of any  compensation  which the timely  party
                                   may become entitled to receive from the third
                                   party for such  license,  either 33,3 % if it
                                   concerns a license in the delayed party's
                                   exclusive  part of the TERRITORY or 22,2 % if
                                   it   concerns   a   license   in  the   OTHER
                                   TERRITORIES whichever is higher (determined
                                   on a country-by-country basis).

                  5.1.2.5   In the  event  that  the  commercialization  of such
                            PRODUCT in the  exclusive  part of the  TERRITORY of
                            the  delayed  party  or in the  OTHER  TERRITORY  is
                            dependent on intellectual property rights of another
                            party,  then 33,3 % of any  compensation  payable to
                            such other party shall be borne by the delayed party
                            and  66,7 % of such  compensation  shall be borne by
                            the timely party.

                  The  consequences  set forth in this  Section  5.1.2 shall not
                  apply in either of the following cases:

                  (i)     Within one year  following the PHASE III  COMMENCEMENT
                          DATE,  SYNAPTIC  requests that GRUNENTHAL  produce FDA
                          conformed   materials  pursuant  to  Section  5.1.3.3,
                          GRUNENTHAL notifies SYNAPTIC within 90 days after such
                          request  that  it  will  produce  such  materials  for
                          SYNAPTIC,  GRUNENTHAL  fails to provide such materials
                          to  SYNAPTIC  prior to the second  anniversary  of the
                          PHASE III  COMMENCEMENT  DATE and,  as a  consequence,
                          SYNAPTIC is unable to commence  PHASE III TRIALS prior
                          to such second anniversary; or

                  (ii)    The delayed  party fails to commence  PHASE III TRIALS
                          prior  to the  second  anniversary  of the  PHASE  III
                          COMMENCEMENT  DATE  due to  circumstances  beyond  its
                          control,   including,   without  limitation,  acts  or
                          omissions of any  governmental  authority  such as the
                          FDA or the EMEA.

5.1.3    Production  of  FDA-Conformed   Materials.  In  order  to  fulfill  the
         obligations  described in the preceding  paragraphes  of this Article ,
         SYNAPTIC  shall be  required  to produce  FDA-conform  material  of any
         CANDIDATE in  GMP-quality  and in  sufficient  quantity  necessary  for
         diligently conducting PHASE III TRIALS in SYNAPTIC TERRITORY either

         5.1.3.1    independently; or

         5.1.3.2    with exclusive licensee, or


                                       26
<PAGE>


         5.1.3.3    with   GRUNENTHAL.   In  the  event  that  SYNAPTIC   offers
                    GRUNENTHAL to produce such material,  GRUNENTHAL  shall have
                    an option - to be exercised  within 90 days after receipt of
                    notice  to  produce  exclusively  such  material  until  the
                    approval of such PRODUCT  comprising  such  CANDIDATE in the
                    United States.  SYNAPTIC shall purchase from GRUNENTHAL such
                    PRODUCT against  reimbursement of cost of production plus 20
                    %  surcharge.  For the purpose of this  Agreement,  "cost of
                    production"  shall be calculated in accordance with standard
                    accounting procedures.

                    In case  GRUNENTHAL  has exercised  such option,  GRUNENTHAL
                    shall  produce  such   FDA-material   of  any  CANDIDATE  in
                    GMP-quality  and in  sufficient  quantity  as  mentioned  in
                    Section 5.1.2 above, using all reasonable efforts to achieve
                    the upscaling of the  production  from the existing level to
                    production  scale in  reasonable  time.  50 % of the cost of
                    such  upscaling  shall  be  borne  by  SYNAPTIC,   it  being
                    understood  that such cost shall not include costs  incurred
                    in building a facility or other building improvements.

         5.1.3.4    In the event that  GRUNENTHAL  does not exercise such option
                    and SYNAPTIC desires to seek a toll  manufacturer to produce
                    such  materials,  SYNAPTIC  shall use best efforts to seek a
                    toll   manufacturing   organization   which  is  under   the
                    obligation

                    (i)     to keep all nonpublic  information  relating to the
                            manufacturing  and formulation process strictly
                            confidential for an unlimited period of time, and

                    (ii)    not to produce  the  product  for the benefit of any
                            person  or  entity  other  than   SYNAPTIC  and  its
                            licensees

                    defined herewith as ,,TOLL MANUFACTURER". SYNAPTIC shall use
                    best efforts to seek - in cooperation  with  GRUNENTHAL - an
                    agreement for any such TOLL  MANUFACTURER not to produce the
                    PRODUCT for any person or entity other than  SYNAPTIC or its
                    licensees  until the expiration of the fifth  anniversary of
                    the expiration of the last blocking  patent  relating to the
                    PRODUCT in the United States.

                    The  parties   agree  that  the  time  period   between  the
                    notification  pursuant to Section  5.1.3.3 and  GRUNENTHAL's
                    decision  whether to  exercise  such  option or not shall be
                    added to the period refered to in Section 5.1.2.

         5.1.4    Geographic Limitation on Conduct of Activities.  Neither party
                  shall  conduct  any  activities  with  respect to a  CANDIDATE
                  outside its exclusive  TERRITORY  without the prior consent of
                  the other party.

5.2      Responsibility  for Costs.  Each party shall be responsible for its own
         costs incurred  during the ADVANCED  DEVELOPMENT  STAGE with respect to
         any CANDIDATE.  The parties recognize the possibility that the ADVANCED
         DEVELOPMENT STAGE with respect to a CANDIDATE shall commence  following

                                       27

<PAGE>
         completion  of phase IIa  clinical  trials but before  commencement  or
         completion  of phase II clinical  trials.  As a  consequence,  phase II
         clinical trials with respect to a CANDIDATE could occur during or after
         the  ADVANCED   DEVELOPMENT   STAGE  with  respect  to  the  CANDIDATE.
         Notwithstanding  the first sentence of this Section 5.2, costs incurred
         in connection  with any phase II clinical  trials shall be borne by the
         parties in accordance with Section 4.2.2 above.

5.3      Access to Data Generated in Connection with Phase III Clinical Studies.
         Each  party  shall  keep the other  party  reasonably  apprised  of the
         results of any PHASE III TRIALS and any other  activities  conducted by
         or on behalf of such party without the participation of the other party
         during the ADVANCED DEVELOPMENT STAGE with respect to a CANDIDATE.  All
         data generated  pursuant to such studies shall be provided to the other
         party at the other party's request in the available data format against
         reimbursement  of 50% of the costs of conducting  such studies,  plus a
         surcharge of 10%; provided, however, that clinical safety data shall be
         provided  to the  other  party in the  available  data  format  free of
         charge.

5.4      Information on Status of Phase III Trials.  The parties shall keep each
         other informed on the status of their  preparation and conduct of PHASE
         III  TRIALS on a  half-yearly  basis,  starting  six  months  after the
         commencement of the ADVANCED DEVELOPMENT STAGE.

                                    Article 6
            Post-Advanced Development Stage Production and Marketing

6.1      SYNAPTIC Territory.

         SYNAPTIC will have exclusive rights for production - if not transferred
         to  GRUNENTHAL  according  to  Section  5.1.3  - and  marketing  in the
         SYNAPTIC TERRITORY.

6.2      GRUNENTHAL Territory.

         GRUNENTHAL  will have exclusive  rights for production and marketing in
the GRUNENTHAL TERRITORY.

6.3      Sublicensing Rights in Exclusive Territories.

         Each party shall have the right to license to third  parties its rights
         with respect to the production and marketing of PRODUCTS in any country
         within its exclusive TERRITORY.

6.4      Other Territories.

         With respect to each country within the OTHER  TERRITORIES both parties
         shall cooperate as closely as possible in seeking regulatory  approvals
         for  CANDIDATES  but each  party  shall  have an  independent  right to
         produce and market PRODUCTS without obligation, financial or otherwise,
         to the other party; provided,  however, that prior to

                                       28
<PAGE>
         the filing by one
         party of regulatory  approval to market a PRODUCT in each such country,
         the parties  shall  discuss the  possibility  of entering  such country
         together,  rather  than  proceeding  independently;  provided  further,
         however,  that  neither  party  shall  market  any  PRODUCT in any such
         country  under more than one  trademark  or  sublicense  its  marketing
         rights to more than one party without the prior written  consent of the
         other  party.  In case of  sublicense  in any country  within the OTHER
         TERRITORIES  the  respective  licensor shall be excluded from marketing
         such PRODUCT in such country.

         With  respect  to Japan - due to the  peculiarities  of the  process of
         regulatory  approval in Japan the following shall apply: As soon as one
         party starts  seeking  regulatory  approval  for a CANDIDATE,  it shall
         promptly  inform  the other  party in order to allow  the  other  party
         within 90 days from such  notice to  establish  a  relationship  with a
         Japanese Clinical Research Organization which in close cooperation with
         the first party will  conduct all  activities  for a second  regulatory
         approval for such CANDIDATE.  Such second regulatory  approval shall be
         transferred to the licensee of the second party. If the other party has
         not established  such a relationship the one party shall be entitled to
         proceed with its activities.

6.5      Coordination of Marketing Strategy.

         Each  party  will,  to the  extent  reasonably  practicable,  take into
         account the marketing  strategy of the other party in  formulating  its
         own marketing strategy.

6.6      Exchange of Information.

         Each party shall provide to the other party, free of charge, all safety
         data  generated  with  respect to a CANDIDATE  following  the  ADVANCED
         DEVELOPMENT  STAGE. In addition,  each party shall keep the other party
         reasonably  apprised of any other data generated in connection with the
         further  development of an approved  CANDIDATE as far as these data may
         be relevant for registration purposes in the other party's TERRITORIES.
         Such  additional data shall be provided to the other party at the other
         party's request in the available data format against  reimbursement  of
         50% of the costs incurred in generating  such data, plus a surcharge of
         10%.


                                    Article 7
                                Patent Protection

7.1      Patent Rights.

     7.1.1        Inventions  by Either Party.  Each party shall own  BACKGROUND
                  TECHNOLOGY and PROJECT TECHNOLOGY,  including inventions, made
                  solely by its  employees.  The party  which owns an  invention
                  shall promptly  inform the other party about the invention and
                  shall  have the  right to file a patent  application  covering
                  such  invention.  All  expenses  relating to the  preparation,
                  filing,   prosecution,   extension  and  maintenance  of  such
                  application  and any patent granted  thereon shall be borne by
                  such party. In the event that

                                       29
<PAGE>
                  such party determines (a) not to
                  file  a  patent  application  for  such  an  invention  in the
                  TERRITORIES,  (b) not to continue  prosecution  or maintenance
                  thereof  in the  TERRITORIES  or (c) not to extend  any patent
                  granted thereon in the  TERRITORIES,  it shall promptly notify
                  the  other  party  and the  other  party  shall be  given  the
                  opportunity  to seek  and  pursue  patent  protection  on such
                  invention in such  territory at its own expense.  In the event
                  the other party pursues such patent  protection,  ownership of
                  the PATENT RIGHTS for such invention in such territories shall
                  be assigned to such other party.

     7.1.2        Joint  Inventions.  An invention  made jointly by employees of
                  SYNAPTIC and employees of GRUNENTHAL shall be owned jointly by
                  SYNAPTIC and GRUNENTHAL.  In such case, the preparation of the
                  priority  patent  application  shall be carried out by counsel
                  mutually agreeable to the parties,  with the expenses incurred
                  in  connection  with  such  preparation  being  shared  by the
                  parties on a 50:50  basis.  Each of SYNAPTIC  and  GRUNENTHAL,
                  respectively,  shall be responsible  for selecting  counsel to
                  file,   prosecute  and  ensure   maintenance  of  such  patent
                  applications  under its name in its exclusive  TERRITORIES and
                  for the costs associated therewith.  The parties shall jointly
                  select  counsel to file,  prosecute and ensure  maintenance of
                  such  patent   applications   in  their  names  in  the  OTHER
                  TERRITORIES  and  shall  share  on a  50:50  basis  the  costs
                  associated therewith. In the event a party decides not to file
                  a patent  application  or to maintain the PATENT RIGHTS in any
                  OTHER  TERRITORIES,  the other  party  shall have the right to
                  file a patent  application  or to maintain  the PATENT  RIGHTS
                  under its name in such territory at its own expense.

         7.1.3    Assistance.  If so  requested  by the  party  pursuing  patent
                  protection in accordance with the foregoing provisions of this
                  Section  7.1,  the other  party shall  provide  the  necessary
                  declarations and reasonable  assistance to such party in order
                  to obtain the patent protection for any invention.



7.2      Availability  of License to Other  Party's  Inventions  Made  during or
         after Advanced Development Stage and Related Patent Rights.

         Each process,  formulation or new use invention relating to a CANDIDATE
         made by one party during or after the ADVANCED  DEVELOPMENT  STAGE with
         respect to such CANDIDATE,  and PATENT RIGHTS  relating  thereto in the
         other party's exclusive TERRITORIES and in the OTHER TERRITORIES, shall
         be made available for license to such other party against  payment of a
         royalty on the NET SALES of the PRODUCT  comprising  such  CANDIDATE in
         such TERRITORIES,  such royalty to be determined in accordance with the
         formula set forth in Schedule B.


                                       30
<PAGE>

                                    Article 8
       License Grants; Restrictions on Use of Technology and Patent Rights

8.1      License Relating to Products.

         8.1.1    Grant by  SYNAPTIC.  Subject to any  limitations  set forth in
                  Section  8.1.3,  SYNAPTIC  grants to  GRUNENTHAL  an exclusive
                  license  to  use  SYNAPTIC  PROJECT  TECHNOLOGY  and  SYNAPTIC
                  BACKGROUND TECHNOLOGY,  and PATENT RIGHTS relating thereto, in
                  GRUNENTHAL  TERRITORY and the OTHER  TERRITORIES  for the sole
                  purpose of carrying  out PROJECTS  initiated  pursuant to this
                  Agreement and discovering,  developing,  manufacturing, having
                  manufactured,  using and selling PRODUCTS  resulting from such
                  PROJECTS.

         8.1.2    Grant  by  GRUNENTHAL.   GRUNENTHAL   grants  to  SYNAPTIC  an
                  exclusive license to use the GRUNENTHAL PROJECT TECHNOLOGY and
                  GRUNENTHAL BACKGROUND  TECHNOLOGY,  and PATENT RIGHTS relating
                  thereto,  in SYNAPTIC  TERRITORY and the OTHER TERRITORIES for
                  the sole purpose of carrying out PROJECTS  initiated  pursuant
                  to this Agreement and discovering, developing,  manufacturing,
                  having manufactured, using and selling PRODUCTS resulting from
                  such PROJECTS.


         8.1.3 Limitations on License Grant of Section 8.1.1.

     (a)       With  respect to the alpha 2 adrenergic  receptors,  SYNAPTIC has
               granted  to The DuPont  Merck  Pharmaceutical  Company  (,,DUPONT
               MERCK") a nonexclusive  license.  As a  consequence,  the license
               grant to GRUNENTHAL  pursuant to Section 8.1.1 to use  BACKGROUND
               TECHNOLOGY  relating to such receptors shall be nonexclusive  for
               so long as  DUPONT  MERCK  continues  to have such  license.  The
               DUPONT  MERCK  license  will expire on  February 5, 1998,  unless
               DUPONT  MERCK  notifies  SYNAPTIC  prior to such date that it has
               decided to undertake  optimization  and development  efforts with
               respect to a compound screened against such receptors.  As of the
               EFFECTIVE DATE,  SYNAPTIC had not received any such  notification
               from DUPONT  MERCK and shall  notify  GRUNENTHAL  in the event it
               receives any such notification.

     (b)       Certain of SYNAPTIC's  PATENT RIGHTS relating to alpha-2 agonists
               overlap with patent rights of Procter & Gamble. As a consequence,
               GRUNENTHAL's license with respect to such alpha-2 agonists cannot
               be defined at the present time. In the event SYNAPTIC  negotiates
               with  Procter & Gamble to license  such PATENT RIGHT to Procter &
               Gamble, it shall use all reasonable  efforts to seek from Procter
               & Gamble the rights to develop and rights to permit

                                       31
<PAGE>

               GRUNENTHAL to
               develop  such  alpha-2  agonists  for the  alleviation  of  PAIN.
               SYNAPTIC shall obtain the same rights and conditions with respect
               to development  of such compounds for the  alleviation of PAIN as
               for itself also for GRUNENTHAL's use in the GRUNENTHAL  TERRITORY
               or  OTHER  TERRITORIES  for the  allevation  of PAIN.  Any  costs
               associated with GRUNENTHAL's  obtaining or exercising such rights
               shall be borne by GRUNENTHAL.

8.2      Sublicense Relating to Products.

         Each  party  shall  have the right to grant  sublicenses  of the rights
         granted to it under Section 8.1 with respect to each PRODUCT commencing
         at any time after the beginning of the ADVANCED  DEVELOPMENT STAGE with
         respect to the CANDIDATE  comprised by such PRODUCT provided,  however,
         that in any  country  of the  TERRITORIES  a party is only using one of
         such  rights  either  for itself or for its  sublicensee.  If any party
         grants  any  such   sublicense,   it  shall  promptly  provide  written
         notification thereof to the other party.

8.3      The rights granted in Section 8.1.1,  8.1.2 and 8.2 shall be granted as
         long as such  technology  or PATENT RIGHTS exists and shall survive the
         termination or expiration of this Agreement regardless of the reason of
         termination or expiration  provided however,  that the respective party
         has complied with its payment obligation in connection with the rights.
         In  case  the  respective  party  is in  breach  of  any  such  payment
         obligation Section 13.2 shall apply.


                                    Article 9
                     Reimbursement or Other Payment of Costs

9.1      Calculation  of Costs.  For all  purposes of this  Agreement,  ,,costs"
         shall be calculated in accordance with the applicable  party's standard
         method for computing  costs,  applied in a manner  consistent  with all
         other activities carried out by such party.

9.2      Reimbursement  of Ongoing  Costs.  (a) Costs  incurred  pursuant to the
         BUDGET for a PROJECT during the EARLY DEVELOPMENT STAGE with respect to
         a CANDIDATE  shall in the first instance be paid by GRUNENTHAL.  At the
         end of the first six months of each 12-month  period for which detailed
         costs are provided in any such BUDGET,  SYNAPTIC  shall pay  GRUNENTHAL
         25% of the total amount of such  detailed  costs.  Within 60 days after
         the end of each  such  12-month  period,  GRUNENTHAL  will  provide  to
         SYNAPTIC an invoice  for 50% of the total  costs  incurred by it during
         such year pursuant to the BUDGET,  net of the amount previously paid by
         SYNAPTIC in respect of such BUDGET  during such year,  together  with a
         detailed  accounting  of all of such  costs.  Within 30 days  after its
         receipt of the invoice,  SYNAPTIC  shall pay GRUNENTHAL the balance due
         GRUNENTHAL.  In no event,  however,  shall  SYNAPTIC be  required  with
         respect to any year to pay GRUNENTHAL more than 50% of the total amount
         of the  detailed  costs for such year

                                       32
<PAGE>
         reflected  in the BUDGET  unless
         SYNAPTIC shall have approved modifications thereto.

         (b) If, prior to any date as of which SYNAPTIC is required to reimburse
         GRUNENTHAL for costs  incurred with respect to a CANDIDATE  pursuant to
         Section 9.2 (a), SYNAPTIC  provides written  notification to GRUNENTHAL
         that it is in good faith actively  attempting to identify a third party
         to which to license its production and marketing rights with respect to
         such CANDIDATE,  then SYNAPTIC's reimbursement obligations with respect
         to costs  associated  with such  CANDIDATE  shall be suspended  for the
         period from the date of such notification  until the earlier of (i) the
         30th  day  following  the  consummation  by  SYNAPTIC  of  a  licensing
         arrangement  with a third party or (ii) the first  anniversary  of such
         notice.

9.3      Payment of Royalties. Any royalties that may be payable hereunder shall
         be paid  within  sixty days after the close of each  calendar  quarter.
         With each such  quarterly  payment,  the paying party shall furnish the
         other   party   with  a   royalty   statement,   setting   forth  on  a
         country-by-country  basis  the total  number  of units of each  Product
         made,  used and/or sold during the  calendar  quarter  with  respect to
         which the royalty payment is being made.

9.4      Other Reimbursements and Payments. Any other reimbursements or payments
         which one party is  required  to make to the other  party shall be made
         within 60 days  following  receipt  by the  paying  party of an invoice
         therefor.


                                   Article 10
                         Records and Reports, Inspection

10.1     Maintenance of Records; Provision of Reports.

         The parties agree to keep accurate records of each PROJECT.  Each party
         shall also keep, and shall require its permitted  sublicensees to keep,
         accurate   books  and  accounts  of  record  in  connection   with  the
         manufacture,  use and/or sale by or for it of any PRODUCTS with respect
         to which  royalties may be payable  hereunder in  sufficient  detail to
         permit accurate determination of all figures necessary for verification
         of royalty obligations.

10.2     Inspection of Records.

         Each  party  agrees  to  allow  an  independent   chartered  accountant
         designated by the other party and  reasonably  acceptable to such party
         (a) to examine such party's  records of each PROJECT in order to verify
         the  fulfillment of such party's  obligations  under this Agreement and
         (b) to examine  such  party's  records  for the  purpose  of  verifying
         royalty  statements.  Such  examinations  shall not be  conducted  more
         frequently than once a year.

                                       33
<PAGE>

         The  chartered  accountant  shall be  obliged to keep his  findings  in
         strict  confidence  and shall inform its client only about  whether the
         obligations  of the other  party have been met and  whether the royalty
         amounts have been verified.

         Only in case the chartered  accountant  finds  reasonable  proof of the
         fact that  obligations  of this  Agreement  have not been adhered to or
         that royalty payments made were less than amounts properly due shall he
         provide further information.

         The costs of such  chartered  accountant  shall be borne by his  client
         unless the  accountant  establishes a violation of an obligation  under
         this Agreement or an underpayment of royalties, in which case the costs
         shall be borne by the other party.


                                   Article 11
                                 Confidentiality
11.1     Obligations.

         Each of SYNAPTIC and GRUNENTHAL shall use its best efforts to retain in
         confidence  and not use,  except as  provided  in this  Agreement,  all
         information  received from the other party pursuant to or in connection
         with  this   Agreement.   All  third   parties   involved,   licensees,
         sublicensees or TOLL  MANUFACTURER  shall be bound accordingly and each
         party  shall be  responsible  for the  conduct  of such  parties.  Such
         information may,  however,  be disclosed in order to allow either party
         to  defend  against  litigation  with a  third  party  (subject,  where
         possible,  to adequate safeguards for  confidentiality),  in connection
         with either party's filing and prosecution of patent  applications  and
         in order to enable  either  party to comply with laws and  governmental
         regulations.

11.2     Waiver of Confidentiality Obligation.

         The  obligation of  confidentiality  set forth in Section 11.1 shall be
         deemed waived as to information which (a) is in the public domain,  (b)
         comes into the  public  domain  through no fault of the party  claiming
         waiver,  (c) the party claiming  waiver can show by written records was
         known by it prior to  disclosure  hereunder,  (d) is  disclosed  to the
         party claiming waiver without  obligation of confidentiality by a third
         party having a legal right to make such  disclosure  or (e) is required
         to be disclosed by law.

11.3     Disclosure of Agreement.

         Except as required  by law,  neither  party shall  release to any third
         person or publish in any way any non-public information relating to the
         terms of this  Agreement or to any PROJECT,  without the prior  written
         consent of the other party,  which  consent  shall not be  unreasonably
         withheld.

                                       34
<PAGE>

11.4     Publicity.

         The  text  of any  press  release  relating  to this  Agreement  or the
         transactions  contemplated  hereby shall be reviewed in advance by both
         parties and may not,  except as required by law, be  published  without
         the prior written approval of both parties.



11.5     Scientific Publications.

         Neither  party shall make any  scientific  publication  concerning  the
         results of its  studies  carried out under this  Agreement  without the
         prior  approval of the other party.  Each party shall provide the other
         party  with the  opportunity  to review  any  proposed  manuscripts  or
         abstracts  which  relate to any PROJECT at least 30 days prior to their
         intended  submission to any  scientific  publisher and shall not submit
         any such manuscript or abstract  without the written  authorization  of
         the reviewing party, which shall not be unreasonably withheld.


                                   Article 12
                             Termination of Projects

12.1     Termination of Projects by Mutual Agreement.

         The  parties  may at any  time,  by  mutual  agreement,  terminate  any
         PROJECT.  The rights and obligations of the parties with respect to the
         subject matter of such PROJECT shall be set forth in a separate written
         agreement at the time of such termination, and shall supercede in their
         entirety the rights and obligations of the parties with respect to such
         subject matter set forth in this Agreement.


12.2     Termination of Projects Due to Impasse at the Management Committee
           Level.

         In the event that pursuant to Section 3.1.6 the MANAGEMENT COMMITTEE is
         presented  with, but is unable within 180 days after such  presentation
         to resolve, an issue relating to the direction or conduct of a PROJECT,
         such PROJECT shall automatically terminate.  Upon any such termination,
         neither  party  shall,   at  any  time  during  the  five  year  period
         thereafter,  undertake any further  research or development  activities
         focused on the  identification of any compound the primary mechanism of
         action which involves any TARGET that was the focus of such PROJECT for
         the alleviation of PAIN.

12.3     Termination of Project during the Research Stage.

         In case one party (the ,,nonparticipating party") determines during the
         RESEARCH STAGE of a PROJECT that it no longer desires to participate in
         such  PROJECT,   it  may  elect,  by  providing   written  notice  (the
         ,,nonparticipation  notice")  to the other  party (the  ,,participating
         party"), to terminate its participation in the PROJECT,  whereupon

                                       35
<PAGE>

         such PROJECT  shall  immediately  terminate.   In  the  event  of  any
         such termination, the following shall apply:

                  (a)      The   nonparticipating   party   shall  cease  to  be
                           obligated to conduct any activities  contemplated  by
                           either  Section  5.1 or the  research  plan  for such
                           PROJECT  to  be  conducted   by  it  following   such
                           notification;

                  (b)      The  participating  party may continue its activities
                           with  respect to the  PROJECT  and shall  continue to
                           have  the  right  to use (i) any  TARGET  that is the
                           focus  of  such   PROJECT,   (ii)   COMPOUND,   (iii)
                           BACKGROUND  TECHNOLOGY and/or (iv) PROJECT TECHNOLOGY
                           in  connection  therewith.  Such  activities  may  be
                           performed in any  TERRITORY,  including any TERRITORY
                           of the nonparticipating party;

                  (c)      The  nonparticipating  party  shall cease to have the
                           right  to use any  TARGET  that is the  focus of such
                           PROJECT,  any  COMPOUND  the  mechanism  of action of
                           which involves such TARGET and the related BACKGROUND
                           TECHNOLOGY and PROJECT  TECHNOLOGY for the purpose of
                           identifying and developing  COMPOUNDS for alleviating
                           PAIN in humans; and

                  (d)      The  participating  party shall have no  liability or
                           other  obligation,  financial  or  otherwise,  to the
                           nonparticipating  party  in  respect  of any  PRODUCT
                           resulting from such PROJECT.



                                   Article 13
                        Term and Termination of Agreement

13.1     Term.

         This Agreement enters into force as of the EFFECTIVE DATE and continues
         in full force for a period of five years thereafter,  unless terminated
         earlier   pursuant  to  the  other   provisions  of  this  Article  13.
         Thereafter,  it shall be  automatically  renewed every two years for an
         additional period of two years,  unless one party gives the other party
         written  notice  at  least 6  months  prior  to the  expiration  of the
         original five-year period or the next subsequent two-year period of its
         desire  not to renew,  in which  case this  Agreement  shall  terminate
         effective upon the expiration of such period.

13.2     Termination for Breach.

         If either party shall be in material  default of any of its obligations
         under this  Agreement  and shall fail to remedy such default  within 90
         days  after  written  notice  thereof  specifying  the  nature  of such
         default,  then,  notwithstanding  anything to the contrary contained in
         this  Agreement,  the party not in  default  shall  have the  option of
         terminating  this  Agreement by giving written notice of termination to
         the party in
                                       36
<PAGE>

         default,  which option, if it is to be exercised,  must be
         exercised  within  60  days  following  the  expiration  of the 90 days
         allowed to correct the default.

13.3     Termination due to change of control.

         13.3.1   GRUNENTHAL  may terminate  this  Agreement  upon 180 days'
                  written  notice in case any single  person or entity (or group
                  of  affiliated   entities)   becomes  the  owner  directly  or
                  indirectly of more than 50 % of shares of SYNAPTIC or acquires
                  otherwise  comparable  dominating  influence  on SYNAPTIC  and
                  GRUNENTHAL  has  reasons  to  believe  that the  change  has a
                  negative impact on the cooperation.  The aforementioned  right
                  to terminate shall not apply,

                  (i)     in case Dr.  Mullinix  becomes  50 % owner  of the
                          shares  of  SYNAPTIC  or  obtains otherwise comparable
                          dominating influence, or

                  (ii)    in case of an  acquisition by an affiliate of SYNAPTIC
                          in which SYNAPTIC owns more than 50 % of shares or

                  (iii)   in case a financial institution is acquiring such
                          shares or dominating influence.

         13.3.2   SYNAPTIC  may  terminate  this  Agreement  upon 180  days'
                  written notice in case a third party becomes owner of directly
                  or  indirectly  more  than 50 % of  shares  of  GRUNENTHAL  or
                  acquires   otherwise   comparable   dominating   influence  on
                  GRUNENTHAL and SYNAPTIC has reasons to believe that the change
                  has a negative impact on the  cooperation.The  Wirtz-family or
                  companies   belonging   or   controlled   by  members  of  the
                  Wirtz-family shall not be considered as third parties.


                                   Article 14
                Effect of Termination or Expiration of Agreement

14.1     Termination or expiration of this Agreement shall not affect the rights
         and obligations of the parties under  provisions which by their meaning
         or intent have an effect  beyond the duration of this  Agreement.  Such
         provisions  shall,  except to the  extent  expressly  limited  by their
         terms,  survive any such  termination or expiration.  In addition,  the
         liabilities  of the  parties  for any  breach of this  Agreement  shall
         survive expiration or termination  hereof.  Without in any way limiting
         the  foregoing,   but  subject  to  Section  14.2,  PROJECTS  and  drug
         development  activities relating to CANDIDATES  resulting from PROJECTS
         shall not be affected by any termination of this Agreement  pursuant to
         Article 13 and any provisions of this Agreement  relating thereto shall
         survive any such termination.

14.2     The parties are aware that  termination or expiration of this Agreement
         has  an  impact  on the  development  of  PROJECTS  and  needs  special
         considerations. The parties therefore agree in clarification of Section
         14.1 above on the following:


                                       37
<PAGE>
         14.2.1   Termination  during  Research  Stage pursuant to Section 13.1,
                  13.2 and 13.3. At least 90 days prior to  termination  of this
                  Agreement,  with regard to any  PROJECT  which has not at such
                  time progressed  beyond the RESEARCH STAGE,  the parties shall
                  discuss in good faith whether or not to continue  jointly such
                  PROJECT.  If the parties  cannot agree in such  discussions to
                  continue such PROJECT  jointly  within the above  mentioned 90
                  days, such PROJECT shall terminate and then

                  14.2.1.1    each party  shall be  entitled  to continue on its
                              own to attempt to identify  and develop  compounds
                              whose  mechanism  of action is the  TARGET of such
                              PROJECT for the  alleviation of PAIN and to use in
                              connection  therewith any  BACKGROUND  TECHNOLOGY,
                              PROJECT  TECHNOLOGY and PATENT RIGHTS of the other
                              party which exist at the time of termination,

                  14.2.1.2    neither party shall have any obligation to provide
                              any additional data or other information  relating
                              to  such  TARGET  or  its  continuing  efforts  to
                              identify and develop  such  compounds to the other
                              party and

                  14.2.1.3    neither party shall have any financial  obligation
                              to the other  party with  respect  to any  product
                              which may result from its efforts or with  respect
                              to its use of any technology, rights or other data
                              or information referred to in this Section 14.2.1.

         14.2.2   Termination during Early Development Stage pursuant to Section
                  13.1 or Section 13.3. Upon  termination due to Section 13.1 or
                  Section  13.3 of this  Agreement  with  regard to any  PROJECT
                  which has  progressed  at such  time to the EARLY  DEVELOPMENT
                  STAGE  the  parties  shall  continue  the  development  of the
                  CANDIDATE  resulting  from such PROJECT until the end of phase
                  II a  clinical  trials.  Thereafter  Article  5 and all  other
                  applicable  provision  of this  Agreement  shall  apply.  With
                  respect to any such PROJECT  Section 12.2 shall survive if the
                  termination  is pursuant to Section 13.1 but shall not survive
                  if the termination is pursuant to Section 13.3.

         14.2.3   Termination during Early Development Stage pursuant to
                    Section 13.2

                  Upon  termination of this  Agreement  pursuant to Section 13.2
                  with regard to any PROJECT  which has  progressed at such time
                  to the EARLY DEVELOPMENT STAGE each party shall be entitled to
                  continue  to develop  and to market on its own and any product
                  resulting  therefrom  in its  exclusive  TERRITORY  and in the
                  OTHER TERRITORIES. The parties shall not be obliged to further
                  collaborate during this EARLY DEVELOPMENT STAGE or at any time
                  thereafter.

                  Thereafter each party shall be entitled to continue on its own
                  and all other  applicable  provisions of this Agreement  shall
                  apply and the party  shall be  entitled  to use in  connection
                  therewith any BACKGROUND  TECHNOLOGY,  PROJECT  TECHNOLOGY and
                  PATENT  RIGHTS of the other party which

                                       38
<PAGE>
                  exists at the time of
                  termination. The right to terminate this Agreement pursuant to
                  Section 13.2 shall not prevent the terminating  party to claim
                  further damage.  With respect to any such PROJECT Section 12.2
                  shall not survive.




                                   Article 15
                          Governing Law and Arbitration

15.1     Governing Law.

         This Agreement shall be exclusively governed by the laws of Switzerland
         (without regard to principles of conflicts of laws).

15.2     Arbitration.

         Any  controversy  or claim arising out of or relating to this Agreement
         shall be finally settled by arbitration in accordance with the Rules of
         the International  Chamber of Commerce (ICC). The arbitration  hearings
         shall be held in Zurich, Switzerland, in English language.


                                   Article 16
                              Concluding Provisions

16.1     No Agency.

         It is  understood  and agreed that SYNAPTIC and  GRUNENTHAL  shall each
         have the status of an independent  contractor  under this Agreement and
         that nothing in this Agreement shall be construed as authorization  for
         either party to act as agent for the other party.

16.2     Notices.

         Any notice required or permitted to be given under this Agreement shall
         be in writing and shall be sent by first class  certified or registered
         mail, postage prepaid, or by express courier services, addressed to the
         party to be notified at its address  shown below or such other  address
         as may have been furnished in writing to the notifying party.


                                       39

<PAGE>

                  If to SYNAPTIC:

                           Synaptic Pharmaceutical Corporation
                           215 College Road
                            Paramus, New Jersey 07652
                           Attention:       Kathleen P. Mullinix
                           Chairman, President and CEO




                  If to GRUNENTHAL:

                           Grunenthal GmbH
                           Zieglerstr. 6
                           52078 Aachen
                           Federal Republic of Germany
                           Attention:       Dr. Eric Paques, Geschaftsfuhrung

         Any notice  hereunder  shall be deemed  given as of the actual  date of
receipt by SYNAPTIC or GRUNENTHAL.


16.3     Force Majeure.

         No  failure  or  omission  by either  party in the  performance  of any
         obligation of this Agreement shall be deemed a breach of this Agreement
         or create any liability if the same shall have arisen from any cause or
         causes beyond the control of the party, including,  without limitation,
         any of  the  following:  an  act  of  God;  acts  or  omissions  of any
         government; any rules, regulations or orders issued by any governmental
         authority  or by any  officer,  department,  agency or  instrumentality
         thereof; a fire; a storm; a flood; an earthquake; an accident; a war; a
         rebellion;  an  insurrection;  a riot;  an  invasion;  a strike;  and a
         lockout, provided, in each case, that such failure or omission is cured
         as soon as is practicable following the occurrence of such event.


16.4     Amendment; Waiver.

         This Agreement may not be amended,  supplemented or otherwise modified,
         except by a written  instrument signed by both parties.  Any obligation
         of either  party may be  waived by a written  instrument  signed by the
         other  party.  Any  delay or  omission  on the part of any party in the
         exercise of its rights hereunder will not impair such rights,  nor will
         it constitute a  renunciation  or waiver of such rights.  The waiver by
         either  party of any term or  condition  of this  Agreement  in any one
         instance  shall not be deemed or  construed to be a waiver of such term
         or condition for any other instance in the future  (whether  similar or
         dissimilar) or of any subsequent breach thereof.

                                       40
<PAGE>


16.5     Indemnification.

         Each party (the ,,indemnifying  party") shall indemnify the other party
         for,  and defend and hold such other party  harmless  from and against,
         any and all losses, claims, liabilities,  costs and expenses whatsoever
         (including  reasonable  attorneys'  fees) that may be  imposed  upon or
         asserted  against such other party as a result of a wilful or negligent
         conduct of the indemnifying party in testing,  making, using or selling
         any PRODUCT or CANDIDATE which not reasonably  could have been detected
         by such other party.


16.6     Assignment.

         This Agreement shall not be assigned wholly or in part to third parties
         or to the legal  successor  by either party  without the prior  written
         consent of the other party;  provided,  however,  that,  subject to the
         other party's right to terminate pursuant to Section 13.3, either party
         may assign this  Agreement in connection  with the sale of its business
         without the consent of the other party.


16.7     No Strict Construction.

         This  Agreement  has been  prepared  jointly  and shall not be strictly
construed against either party.


16.8     Counterparts.

         This  Agreement  may be  executed in one or two  counterparts,  each of
         which shall be an original, but both of which together shall constitute
         one and the same instrument.


16.9     Entire Agreement.

         This Agreement  constitutes  the entire  agreement  between the parties
         with respect to the subject  matter  hereof,  and  supersedes all prior
         agreements,  understandings and arrangements,  whether oral or written,
         of the parties with respect thereto.


16.10    Headings.

         The  headings  of the  sections  of  this  Agreement  are  for  general
         information  and  reference  only,  and  this  Agreement  shall  not be
         construed by reference to such headings.

                                       41

<PAGE>

16.11    Severability.

         In the  event  that  any  provision  of this  Agreement  is or  becomes
         ineffective, the validity of the remaining provisions shall thereby not
         be affected.  In place of the  ineffective  provision the parties shall
         find a provision  being the nearest legally  possible  approach to that
         which the  parties  have  decided  in  consideration  of the spirit and
         object of this Agreement.


Date:  January 12, 1998            Date:  January 12, 1998

       GRUNENTHAL GMBH                    SYNAPTIC PHARMACEUTICAL CORPORATION

       /s/ Michael Wirtz
       /s/ Franz Wirtz                    /s/ Kathleen P. Mullinix






                                       42

<PAGE>


                                                                    Schedule A

                       Surcharge Pursuant to Section 4.2.4


                                                         Surcharge

If nonparticipation notice
         provided prior to phase I Completion                10%

If nonparticipation notice
         provided Post-phase I Completion                    20%













                                       43
<PAGE>




                                                                    Schedule B

                 Royalties for Licenses to Certain Patent Rights


 Applicable Royalty

Payable  only with  respect  to NET SALES in the years  during  which the market
exclusivity has been extended if the PATENT RIGHTS relate to:



               Process                                                      2 %

               Formulation                                                  3 %

               New Use                                                      3 %


The maximum  cummulative  percentage  on two or more of the above items shall be
4%.











                                       44

<PAGE>




                                                        Schedule I

                                Available Targets


1.    Neuropeptide Y2 receptor
2.    Neuropeptide Y4 receptor
3.    Glycine transporter
4.    GAT-2 transporter
5.    GAT-3 transporter
6.    Taurine transporter
7.    Betaine transporter
8.    5HT-4 receptor
9.    Orphan transporter
10.   Hp 15a (orphan receptor)
11.   HL-18a (orphan receptor)
12.   FB41a (orphan receptor)


                                       45

<PAGE>



                                                        Schedule II

                          Tissues Known to be Involved
                      in Transmission or Inhibition of Pain




                            Dorsal Root Ganglia (DRG)

                            Spinal Cord especially Dorsal-Horns

                            Thalamus

                            Periaqueductal Gray Matter (PAG)

                            Medulla especially Nucleus Raphe Magnus (NRM)

                            Locus coerulus

                               Trigeminal Ganglion

                            Sp 5 (Spinal trigeminal ganglion)


                                       46

<PAGE>


                                                        Schedule III




                                Alpha 2 Compounds
                            and Alpha 2 Patent Rights


[**]









                                       47

[** CONFIDENTIAL TREATMENT REQUESTED]

                                                                EXHIBIT 10.39
                                                                -------------

                                                              AMENDED        AND
                                                     RESTATED         EMPLOYMENT
                                                     AGREEMENT   dated   as   of
                                                     February  7, 1998,  between
                                                     SYNAPTIC     PHARMACEUTICAL
                                                     CORPORATION,   a   Delaware
                                                     corporation            (the
                                                     "Company"),   and  LISA  L.
                                                     REITER (the "Employee").


                  The  Employee  is  currently   employed  by  the  Company  and
possesses special and particular knowledge of the business and operations of the
Company and of the industry in which it  operates.  The Company and the Employee
are  parties  to an  Employment  Agreement  dated as of  February  7,  1994 (the
"Original  Employment  Agreement") the initial term of which expires on February
7, 1998.  The Company and the Employee now desire to amend and restate the terms
of the Employee's employment by the Company.

                  ACCORDINGLY,  in  consideration  of the mutual  covenants  and
obligations hereinafter set forth, the parties hereto agree as follows:

                  1. Employment.The Company hereby employs the Employee, and the
Employee hereby accepts such employment by the Company, on the terms and subject
to the conditions hereinafter set forth.

                  2. Term.  Subject to earlier  termination as provided  herein,
the  employment  of the  Employee  hereunder  shall  be for a  four-year  period
commencing on February 7, 1998 (the "Effective  Date"), and ending on the fourth
anniversary of the Effective Date; provided, however, that commencing as of such
fourth  anniversary  and on each  anniversary  thereafter,  unless  either party
hereto  gives the other party at least 90 days' prior  written  notice of its or
her election not to extend the period of the  Employee's  employment  hereunder,
such period shall automatically be extended for an additional one-year period on
the same terms and conditions set forth herein,  unless otherwise agreed upon by
the parties.  For  convenience of reference,  such period of employment,  as the
same may be extended  as  aforesaid,  is  referred to herein as the  "Employment
Period."

                  3.  Duties.  (a) During the  Employment  Period,  the Employee
shall be employed  as Vice  President,  General  Counsel  and  Secretary  of the
Company  and shall  perform  such duties for the  Company  consistent  with such
position  as may be assigned  to her from time to time by the  President  of the
Company.

          (b)     The Employee shall perform her duties hereunder at the offices
of the Company in Paramus, New Jersey;  provided,  however, that the Company may
require  the  Employee  to travel in  connection  with the  performance  of such
duties.  Anything  contained  herein  to the  contrary  notwithstanding,  if the
Company  requires the Employee to be based  anywhere other than within a 50-mile
radius of New York City and notifies the Employee in writing that her  continued
employment by the Company is conditional  upon such  relocation and the Employee
refuses to so  relocate,  then any  Termination  of  Employment  of the Employee
resulting therefrom,  whether initiated by the Company or by the Employee, shall
constitute a Termination Without Cause.


                                       -1-


<PAGE>



                  4. Time to be Devoted to  Employment.  Except for vacations in
accordance with Section 5(d) and absences due to temporary  illness,  during the
Employment Period, the Employee shall devote all of her business time, attention
and energies to the performance of her duties under this  Agreement.  During the
Employment  Period,  the  Employee  shall not be engaged  in any other  business
activity which, in the judgment of the Company, conflicts with the duties of the
Employee under this Agreement, whether or not such activity is pursued for gain,
profit or other pecuniary advantage.

                  5.       Compensation; Reimbursement.

          (a)  Base Salary.  During the Employment Period, the Company shall pay
to the Employee a base salary of $170,000 per annum,  subject to increase by the
Board of  Directors  of the  Company,  in its  discretion.  For  convenience  of
reference,  such base  salary,  as the same may be increased  as  aforesaid,  is
referred to herein as the "Base  Salary."  The Base  Salary  shall be payable in
such  installments  (but not less frequent than monthly) as is the policy of the
Company generally with respect to its employees.

          (b)       Annual Performance Bonus.  The Employee shall be eligible to
receive a cash bonus of at least  $25,000  with  respect to each  calendar  year
during the Employment Period, subject to the achievement of the goals determined
at the  commencement  of each year by the  President of the  Company.  Such cash
bonus, if earned,  will be payable to the Employee within  forty-five days after
the end of the  calendar  year  in  respect  of  which  such  bonus  is  earned.
Additional bonuses may be approved by the Board of Directors of the Company,  in
its discretion.

          (c)     Benefits.  During the Employment Period, the Employee shall be
entitled to such benefits as are generally made available to other  employees of
the Company and to such  additional  benefits as are generally made available to
employees of the Company at  substantially  the same level of  employment as the
Employee.

          (d)  Vacation. During each calendar year of the Employment Period, the
Employee shall be entitled to five weeks of vacation time with full pay.

          (e)      Reimbursement of Expenses.  During the Employment Period, the
Company  shall  reimburse  the  Employee,  in  accordance  with the policies and
practices of the Company in effect from time to time during such Period, for all
reasonable and necessary traveling expenses and other disbursements  incurred by
her for or on behalf of the Company in  connection  with the perfor mance of her
duties  hereunder  (such  expenses  being  referred  to herein as  "Reimbursable
Expenses")  upon  presentation  by the  Employee to the  Company of  appropriate
documentation therefor.

                  6.       Termination of Employment.

          (a)      General.  The Company may terminate the Employee's employment
hereunder at any time for any reason.  The Employee may terminate her employment
hereunder pursuant to a Resignation for Good Reason, a Voluntary  Termination or
a Disability Termination.

                                       -2-

<PAGE>



The Employee's  employment  shall terminate  automatically  upon her death.  Any
termination of the Employee's employment is referred to herein as a "Termination
of Employment."

          (b)    Termination Notice.  The Company or the Employee may initiate a
Termination of Employment in any manner permitted  hereunder by giving the other
party written notice thereof (the "Termination Notice").

          (c)  Termination Date.  The effective date (the "Termination Date") of
any Termination of Employment shall be deemed to be the later of (i) the date on
which  the  Termination  Notice  is given  and (ii)  the date  specified  as the
effective date in the Termination Notice; provided, however, that in the case of
the Employee's death, the Termination Date shall be her date of death.

                  7.       Termination by the Company.

          (a)    Termination for Cause.  Any Termination of Employment initiated
by the Company upon the occurrence of an event that constitutes Cause shall be a
"Termination for Cause." For purposes of this Agreement,  the term "Cause" shall
mean the  Employee's  (i)  willful  failure to  perform  those  duties  that the
Employee is required or expected to perform as an employee of the Company  under
Section 3 hereof,  (ii) consistent  failure over a substantial period of time to
perform  competently  such duties,  (iii)  conviction of a crime involving moral
turpitude,  dishonesty,  theft,  unethical  business  conduct  or  conduct  that
significantly  impairs the  reputation  of the Company or (iv) failure to devote
all of her  business  time,  attention  and energies to the  performance  of her
duties  hereunder.  In the event of a  Termination  for Cause,  the  Termination
Notice given to the Employee by the Company shall state that the  Termination of
Employment is "for Cause."

          (b)          Termination Without Cause.  Any Termination of Employment
initiated by the Company (other than a Termination for Cause or a Disability
Termination) shall be a "Termination Without Cause."

                  8.       Termination by the Employee.

          (a)        Resignation for Good Reason.  Any Termination of Employment
initiated by the Employee  within 90 days following the occurrence of any of the
following events shall be a "Resignation for Good Reason":

                  (i)  subsequent  to a  Change  in  Control,  and  without  the
         Employee's express written consent,  (A) the assignment to the Employee
         of any duties inconsistent with her position, duties,  responsibilities
         and status within the Company prior to such Change in Control,  (B) any
         material change in the Employee's  titles or offices as in effect prior
         to such  Change in Control or (C) any removal of the  Employee  from or
         any failure to re-elect the Employee to any material  position  held by
         her prior to such Change in Control;

                  (ii)  subsequent  to a Change in Control,  a reduction  in the
         Employee's Base Salary or a termination of the Employee's participation
         in any bonus plan or program (or a

                                       -3-

<PAGE>



         substantial  reduction in the level of such participation) as in effect
         on the  Effective  Date  or as the  same  may be  increased  after  the
         Effective Date and in effect at the time;

                  (iii)  subsequent  to a Change in  Control,  and  without  the
         Employee's  express written consent,  any requirement that the Employee
         be based anywhere other than within a 50-mile radius of New York City;

                  (iv)  subsequent  to a Change in  Control,  the failure by the
         Company to  continue  the  Employee's  participation  in any benefit or
         compensation  plan, life insurance plan,  health-and-  accident plan or
         disability plan in which the Employee is  participating  at the time of
         such  Change  in  Control  (or in plans  providing  the  Employee  with
         substantially  similar or more favorable benefits) or the taking of any
         action by the  Company  which  would  materially  adversely  affect the
         Employee's   participation  in  or  materially  reduce  the  Employee's
         benefits  under  any of such  plans  or  deprive  the  Employee  of any
         material  fringe  benefit  enjoyed by the  Employee at the time of such
         Change in Control; or

                  (v)  subsequent  to a Change in  Control,  the  failure by the
         Company to obtain  the  assumption  of the  agreement  to perform  this
         Agreement by any successor as contemplated by Section 16.

In the event of a Resignation for Good Reason,  the Termination  Notice given to
the Company by the Employee shall state that the  Termination of Employment is a
"Resignation for Good Reason."

          (b)             Other Termination by the Employee.  Any Termination of
Employment  initiated by the Employee  (other than a  Termination  of Employment
resulting  from  the  Employee's  death,  a  Resignation  for Good  Reason  or a
Disability Termination) shall be a "Voluntary Termination."

                  9. Termination by the Company or by the Employee -- Disability
Termination.  Any  Termination  of  Employment  resulting  from  the  Employee's
Disability shall be a "Disability  Termination." For purposes of this Agreement,
the term  "Employee's  Disability"  shall mean the  Employee's  illness or other
physical or mental  disability  that prevents the Employee from  performing  her
duties hereunder for a period of 90 days in any 180-day period.  In the event of
a Disability Termination, the Termination Notice given to one party by the other
party  shall  state  that  the   Termination  of  Employment  is  a  "Disability
Termination."

                  10. Effect of Termination of Employment. (a) In the Event of a
Termination of Employment  (other than a Termination of Employment  contemplated
by Section 11(a)),  neither the Employee nor her estate or  beneficiaries  shall
have any  further  rights or claims  against the  Company  under this  Agreement
except the right to receive:

                  (i) the portion of the Base Salary which  accrued with respect
         to the period prior to the  Termination  Date but which remained unpaid
         as of the Termination Date;


                                       -4-


<PAGE>



                  (ii) the aggregate amount of Reimbursable  Expenses which were
         incurred prior to the Termination Date but which were not reimbursed by
         the Company as provided in Section 5(e) prior to the Termination  Date;
         and

                  (iii) any other benefits to which the Employee may be entitled
         upon such  Termination  of  Employment  under the plans,  programs  and
         policies of the Company then in effect, which benefits shall be payable
         in accordance with the terms of such plans, programs and policies;

provided,  however,  that if the  Termination  of  Employment  is  pursuant to a
Termination Without Cause, then, in addition to the amounts computed pursuant to
the foregoing  provisions  of this Section  10(a),  the Employee  shall have the
right to receive as severance  compensation an amount (the  "Severance  Amount")
equal to 50% of one year's Base Salary,  such Severance  Amount to be payable at
the same times at which and in the same  manner in which the Base  Salary  would
have  been  payable  to the  Employee  had the  Termination  of  Employment  not
occurred.

          (b)   The Employee shall not be required to mitigate the amount of any
payment  provided  for  in  this  Section  10 by  seeking  other  employment  or
otherwise,  and no payment or benefit  provided  for in this Section 10 shall be
reduced by compensation  earned by the Employee as a result of her employment by
another employer following the Termination Date, or otherwise.

                  11. Effect of Termination of Employment  following a Change in
Control.  (a) In the event that the  Employee's  employment  with the Company is
terminated  in  contemplation  of, or at any time within one year  following,  a
Change in Control, and such termination  constitutes a Termination Without Cause
or a  Resignation  for Good  Reason,  neither  the  Employee  nor her  estate or
beneficiaries  shall have any further rights or claims against the Company under
this Agreement other than the following:

                  (i) the right to receive all amounts and benefits to which the
         Employee  would be  entitled  under  Section 10 upon a  Termination  of
         Employment; and

                  (ii) all stock  options,  stock  bonus  awards and  restricted
         stock grants relating to securities of the Company held by the Employee
         on the Termination  Date shall become  exercisable or vest, as the case
         may be, on the Termination Date,  notwithstanding any provisions in any
         such stock  options,  stock bonus awards or restricted  stock grants or
         the plans covering the same to the contrary, and all rights to exercise
         such stock  options  shall  remain  exercisable  by the  Employee for a
         period of not less than 120 days after the Termination Date.

If the benefits payable hereunder, together with other payments in the nature of
compensation  to or with respect to the Employee,  would otherwise be subject to
the excise taxes  imposed  under  Section  280G of the Internal  Revenue Code of
1986, as amended ("Code"), and if the net value of such benefits and payments in
the nature of  compensation,  after  reduction for such taxes,  is less than the
aggregate  value of the  benefits  and  payments  in the nature of  compensation
determined  as if such  amounts had been $1.00 less than a maximum  amount which
could be paid without imposition of

                                       -5-

<PAGE>



excise taxes,  then the benefits  payable  hereunder shall be reduced to highest
amount such that such  excise  taxes  shall not be imposed  with  respect to the
benefits  or  the  other  payments  in the  nature  of  compensation.  It is the
intention of this  provision to reduce  benefits  payable  hereunder only if the
Employee would be in a superior  position  taking into account such excise taxes
than if such payments were made, and such reduction  shall, in any event, be the
least  amount in order that the Employee be better off with the  reduction  than
before  such  reduction.  The  calculation  of the  value  of  benefits  payable
hereunder and other payments in the nature of compensation, and the implications
of the excise tax rules of Section 280G of the Code,  shall be determined by the
Company in good faith based on written advice of a national accounting firm.

          (b)      The Employee shall not be required to mitigate the amount of
any payment  provided  for  in  this  Section  11 by  seeking  other  employment
or otherwise,and no payment or benefit provided  for in this Section 11 shall be
reduced by compensation  earned by the Employee as a result of her employment by
another employer following the Termination Date, or otherwise.

          (c) As used  herein,  the term  "Change  in  Control" shall mean a
change in  control  of the  Company of a nature  that  would be  required  to be
reported  in  response to Item 1 of Form 8-K  promulgated  under the  Securities
Exchange Act of 1934, as amended (the  "Exchange  Act"),  if the Company were at
that time subject to such reporting  requirements of the Exchange Act; provided,
however, that such term shall in any event be deemed to have occurred if (i) any
"person" (as such term is used in Sections  13(d) and 14(d) of the Exchange Act)
is or  becomes  the  "beneficial  owner" (as  defined  in Rule  13d-3  under the
Exchange Act), directly or indirectly, of securities of the Company representing
35% or more of the  combined  voting  power of the  Company's  then  outstanding
securities or (ii) during any one-year  period or any period of two  consecutive
years,  individuals who at the beginning of any such period constitute the Board
of  Directors  of the  Company  cease for any  reason to  constitute  at least a
majority  thereof  as of the end of such  period  unless  the  election,  or the
nomination for election by the Company's stockholders,  of each new director was
approved by a vote of at least  two-thirds  of the directors of the Company then
still in office who were directors at the beginning of such period.

                  12.  Notices.  All  notices or other  communications  that are
required or permitted  hereunder shall be in writing and shall be deemed to have
been  given  if (a)  personally  delivered  or sent by  telecopier,  (b) sent by
nationally-recognized  overnight  courier or (c) sent by registered or certified
mail, postage prepaid, return receipt requested, addressed as follows:

                  if to the Employee, to her at:

                           530 E. 72nd Street, Apt. #17-B
                           New York, New York  10021


                                       -6-


<PAGE>



                  if to the Company, to it at:

                           215 College Road
                           Paramus, New Jersey  07652
                           Attention:  President
                           Telecopier:  201-261-0623

or to such  other  address  as the party to whom  notice is to be given may have
furnished  to each  other  party in  writing in  accordance  herewith.  Any such
communication  shall be deemed  to have been  received  (i) when  delivered,  if
personally  delivered,  sent by  telecopier  or  sent by  nationally-recognized,
overnight courier and (ii) on the third Business Day following the date on which
the piece of mail containing such  communication is posted,  if sent by mail. As
used  herein,  the term  "Business  Day" means a day that is not a  Saturday,  a
Sunday or a day on which banking institutions in the city to which the notice or
communication is to be sent are not required to be open.

                  13. Entire Agreement;  Amendments. This Agreement contains the
entire  agreement  between the parties hereto with respect to the subject matter
hereof and supersedes all prior or contemporaneous negotiations, correspondence,
understandings   and  agreements  between  the  parties  with  respect  thereto,
including,   without  limitation,  the  Original  Employment  Agreement  .  This
Agreement may be amended only by an agreement in writing  signed by both parties
hereto.  Anything  contained  herein  to  the  contrary   notwithstanding,   the
provisions  of  Sections  10  and 11  shall  survive  the  expiration  or  early
termination of the Employment Period.

                  14.  Assignment.  This  Agreement  is  personal in its nature.
Accordingly,  neither  party  hereto  shall,  without  the consent of the other,
assign this Agreement or any rights or obligations hereunder to any other person
or entity.

                  15.  Benefits of Agreement.  The  provisions of this Agreement
shall be binding  upon and inure to the  benefit  of the  heirs,  beneficiaries,
executors,  administrators  and  permitted  assigns  of  the  Employee  and  the
successors and permitted assigns of the Company.

                  16. Obligation of the Company's  Successors.  Any successor to
substantially  all of the  Company's  assets  and  business,  whether by merger,
consolidation,  purchase of assets or otherwise, shall succeed to the rights and
obligations  of the  Company  hereunder.  The  Company  shall  require  any such
successor,  by agreement in form and substance  satisfactory to the Employee, to
expressly  assume and agree to perform this  Agreement in the same manner and to
the same  extent  that the  Company  would be  required to perform it if no such
succession had taken place.  The failure of the Company to obtain such agreement
prior to the  effectiveness  of any such  succession  shall be a breach  of this
Agreement  and shall  entitle the  Employee  to receive  from the Company or its
successor the same amounts and benefits  that the Employee  would be entitled to
receive  under  Sections  11(a)(i) and  11(a)(ii)  upon a  Resignation  for Good
Reason.  For purposes of implementing the immediately  preceding  sentence,  the
date on  which  any such  succession  becomes  effective  shall  be  deemed  the
Termination Date.


                                       -7-


<PAGE>



                  17. Waiver of Breach.  A waiver of any breach of any provision
of this  Agreement  shall not  constitute  or  operate  as a waiver of any other
breach of such provision or of any other  provision,  and any failure to enforce
any provision  hereof shall not operate as a waiver of such  provision or of any
other provision.

                  18. Execution in Counterparts.  This Agreement may be executed
in one or more counterparts,  each of which shall be deemed an original, but all
of which shall constitute one and the same instrument.

                  19. Headings.  The headings  of sections in this Agreement are
for convenience only, are not a part of this Agreement and shall  not affect the
construction of the provisions of this Agreement.

                  20.  Governing Law. This  Agreement  shall be governed by, and
construed and enforced in accordance  with,  the laws of the State of New Jersey
without giving effect to principles of conflicts of laws.

                  21.  Enforceability.  In the event that any  provision of this
Agreement  is  determined  to  be  partially  or  wholly  invalid,   illegal  or
unenforceable  in any  jurisdiction,  then  such pro  vision  shall,  as to such
jurisdiction,  be modified or  restricted  to the extent  necessary to make such
provision  valid,  binding  and  enforceable,  or, if such  provision  cannot be
modified or restricted,  then such provision shall, as to such jurisdiction,  be
deemed to be excised from this Agreement;  provided,  however,  that the binding
effect and enforceability of the remaining provisions of this Agreement,  to the
extent that the economic  benefits  conferred upon the parties by virtue of this
Agreement remain substantially unimpaired,  shall not be affected or impaired in
any manner, and that any such invalidity,  illegality or  unenforceability  with
respect to such  provisions  shall not invalidate or render  unenforceable  such
provision in any other jurisdiction.

                                      -8-


<PAGE>


                  IN  WITNESS  WHEREOF,  the  parties  have duly  executed  this
Agreement as of the date first above written.



                                            SYNAPTIC PHARMACEUTICAL CORPORATION



                                            By:/s/ Kathleen P. Mullinux
                                               -----------------------------
                                            Name:  Kathleen P. Mullinix
                                            Title: Chairman, President and
                                                     Chief Executive Officer



                                               /s/ Lisa L. Reiter
                                               -----------------------------
                                                   Lisa L. Reiter









                                      -9-

                                                                EXHIBIT 10.40
                                                                -------------






                               AMENDMENT NO. 4 TO
                  RESEARCH COLLABORATION AND LICENSE AGREEMENT

                                                                 Amendment No. 4
dated  and  effective  as  of  March  2, 1998  between  SYNAPTIC  PHARMACEUTICAL
CORPORATION,  a Delaware corporation ("SYNAPTIC"),  and MERCK & CO., INC., a New
Jersey Corporation ("MERCK").



           WHEREAS,  SYNAPTIC and MERCK are parties to a Research  Collaboration
and License  Agreement  dated as of November 30, 1993,  an Amendment No. 1 dated
February 15, 1995, a letter  agreement dated August 25, 1995, an Amendment No. 2
and Supplement dated October 9, 1996 and an Amendment No. 3 and Supplement dated
December 1, 1997 (the  "AGREEMENT").  Capitalized  terms used and not defined in
this Amendment No. 4 shall have the meanings  ascribed to them in the AGREEMENT,
and

           WHEREAS, To their mutual benefit, the parties are willing for certain
rights under PATENTS to be provided to GLAXO (hereinafter defined).

           NOW,  THEREFORE,  in  consideration  of the  premises  and the mutual
covenants hereinafter set forth, the parties agree as follows:

           1. Amendment to the Agreement.  The AGREEMENT  shall be amended as of
the date first written above as follows:

           (i) In ARTICLE 1 - DEFINITIONS.

           Add the following new definitions:


           1.22     GLAXO shall mean Glaxo Group  Limited,  a company  organized
                    and existing under the laws of the United Kingdom and having
                    a principal office at Glaxo Wellcome House, Berkeley Avenue,
                    Greenford, Middlesex, UB6 ONN UK.

           1.23     GLAXO  PRODUCT  shall  mean a BPH  PRODUCT,  as such term is
                    defined in the OPTION AND LICENSE AGREEMENT.

           1.24     OPTION  AND  LICENSE  AGREEMENT  shall  mean  the  Agreement
                    between SYNAPTIC and GLAXO which grants rights under



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                    PATENTS  to GLAXO,  a copy of which is  attached  hereto and
made a part hereof.

           (ii) In ARTICLE 3 - LICENSE GRANT.

           Add the following Section 3.3:

           3.3   MERCK hereby grants back to SYNAPTIC such rights as may be
                 necessary for the sole purpose of enabling SYNAPTIC to grant to
                 GLAXO the rights set forth in the OPTION AND LICENSE AGREEMENT.

           (iii) In ARTICLE 7 - MILESTONES.

           Article  7.1(b)  shall be amended by inserting  after  "MAJOR  MARKET
COUNTRY" the words:

             "in  the  event  that  MERCK  makes  such  filing  of  a  New  Drug
Application or its equivalent prior to filing by GLAXO of a New Drug Application
for a GLAXO PRODUCT with the FDA or an equivalent of a New Drug  Application for
a GLAXO PRODUCT in another MAJOR MARKET COUNTRY".

           (iv) In ARTICLE 9 - ROYALTIES.

           Article 9.3 shall be replaced by Articles 9.3 (a) and 9.3 (b) below:

                  9.3 (a) In the event that GLAXO has not sold a GLAXO PRODUCT
                          during any portion of the calendar year in any country
                          of the TERRITORY and annual NET SALES of PRODUCT
                          exceed $500,000,000.00 (five hundred million dollars),
                          an additional two percent (2%) royalty will be paid by
                          MERCK on the excess NET SALES above $500,000,000.00
                         (five hundred million dollars)for that particular year.

                  9.3 (b)In the event that GLAXO has sold a GLAXO PRODUCT during
                         any portion of the calendar year in any country of the
                         TERRITORY and annual NET SALES of PRODUCT exceed
                         $300,000,000.00 (three hundred million dollars), an
                         additional two percent (2%) royalty will be paid by
                         MERCK on the excess NET SALES above $300,000,000.00
                        (three hundred million dollars)for that particular year.

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           2.  Representations  and  Warranties.  MERCK  hereby  represents  and
warrants to SYNAPTIC  that,  as of the date first  written  above,  (i) MERCK is
actively  continuing  to  develop  the  Safety  Assessment  Candidate  known  as
L-771,688  (SNAP-6383)  and has no  intention  to  discontinue  its  development
efforts with respect thereto, (ii) MERCK has no intention to abandon its efforts
to develop a  selective  alpha-1a  antagonist  for the  treatment  of BPH should
MERCK's development efforts with respect to the aforementioned Safety Assessment
Candidate  fail, and (iii) MERCK has no intention to terminate the AGREEMENT nor
does  MERCK  have any  understanding  with  GLAXO  regarding  any such  possible
termination.  MERCK  makes no  representation  or  warranty  that its conduct or
intentions  in the future  will be  consistent  with  items (i),  (ii) and (iii)
above.

           3.  Effect of Amendment.  From and after the date first written
above, all references in the AGREEMENT to "this AGREEMENT," "hereunder,"
"hereof," "herein," or words of similar import, shall be a reference to the
AGREEMENT, as amended by this Amendment No. 4.  Except as expressly amended by
this Amendment No. 4, the AGREEMENT shall remain in full force and effect and
unchanged.   

           4.  Disclaimer.  It is understood that the parties disagree about the
extent of sublicensing rights granted to MERCK under the AGREEMENT. Execution of
this AMENDMENT NO. 4 is not an admission by either party of the extent of such
rights and shall not be used by any party to establish or dispute the extent of
such rights.


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           IN WITNESS  WHEREOF,  the parties have caused this Amendment No. 4 to
be executed and delivered as of the date first written above.


                                  SYNAPTIC PHARMACEUTICAL CORPORATION

                                  By:/s/ Kathleen P. Mullinix
                                     ------------------------
                                  Name:  Kathleen P. Mullinix
                                  Title: Chairman, President and CEO


                                  MERCK & CO., INC.

                                  By:/s/ Edward Scolnik
                                     -------------------------
                                  Name:  Edward Scolnik
                                  Title:

                                                                EXHIBIT 10.41
                                                                -------------


                                     OPTION
                                       AND
                                LICENSE AGREEMENT

             This Agreement (this  "AGREEMENT") is effective as of the 2nd day
of March,  1998  (the  "Effective  Date") by and  between  Synaptic
Pharmaceutical  Corporation  ("SYNAPTIC"),  a corporation organized and existing
under the laws of the State of  Delaware  and having a  principal  office at 215
College Road, Paramus,  New Jersey 07652, and Glaxo Group Limited, a corporation
organized  and  existing  under the laws of the  United  Kingdom,  and  having a
principal office at Glaxo Wellcome House, Berkeley Avenue, Greenford, Middlesex,
UB6 ONN, U.K. ("GLAXO").

             WHEREAS, SYNAPTIC possesses patent rights pertaining to (i) the use
of selective human alpha-1a  adrenergic  receptor  compounds which may be useful
for the  treatment  of benign  prostate  hyperplasia  ("BPH") and other  medical
conditions and (ii) cloned human alpha-1a, -1b and -1d adrenergic receptors; and

             WHEREAS, MERCK & CO., INC. One Merck Drive, P. O. Box 100,
Whitehouse Station,  New Jersey 08889-0100 ("MERCK") and SYNAPTIC are parties to
a Research  Collaboration  and License  Agreement  dated  November 30, 1993,  as
amended  ("MERCK-SYNAPTIC  AGREEMENT")  under which MERCK has  exclusive  rights
under the FUNCTIONAL USE PATENTS (as hereinafter  defined),  and by an amendment
thereto of even date herewith MERCK has separately granted back to SYNAPTIC such

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<PAGE>

rights as may be necessary for SYNAPTIC to grant the rights set forth in Article
3 herein to GLAXO; and

             WHEREAS,  GLAXO is developing  selective human alpha-1a  adrenergic
receptor  compounds  which  may be  useful  for the  treatment  of BPH and other
medical  conditions  and is using cloned human alpha-1  adrenergic  receptors in
connection therewith; and

             WHEREAS,  SYNAPTIC wishes to grant GLAXO certain licenses under its
patents, as well as an option to expand the scope and extend the term of some of
such licenses, and GLAXO wishes to acquire such licenses and option on the terms
and conditions set forth herein;

             NOW, THEREFORE, SYNAPTIC and GLAXO agree as follows:

                             ARTICLE 1 - DEFINITIONS

1.1           AFFILIATE  shall mean any  corporation  or business  entity of
              which GLAXO or SYNAPTIC owns directly or indirectly, fifty percent
              (50%) or more of the outstanding  stock,  or any corporation  over
              which  GLAXO  or  SYNAPTIC,  directly  or  indirectly,   exercises
              effective control,  or any parent corporation which owns, directly
              or  indirectly,  fifty  percent  (50%) or more of the  outstanding
              stock  of  GLAXO  or  SYNAPTIC  or  indirectly  controls  GLAXO or
              SYNAPTIC.

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<PAGE>



1.2          AGENCY shall mean any governmental regulatory authority responsible
             for granting  health  approvals,  registrations,  pricing and other
             approvals  required  before a product  may be tested or marketed in
             the TERRITORY.

1.3          BPH COMPOUND shall mean any SELECTIVE ALPHA-1a  ADRENERGIC RECEPTOR
             COMPOUND for which regulatory approval to sell for the treatment of
             BPH or for the  inhibition of  contraction  of prostate  tissue has
             been obtained or is being sought.

1.4          BPH  PRODUCT  shall  mean  any  prescription  or   over-the-counter
             pharmaceutical  preparation  containing BPH  COMPOUND(S) for use in
             humans.

1.5          FUNCTIONAL  USE PATENT(S)  shall mean the United States patents set
             forth in Schedule A hereto, the foreign  counterparts  thereto, and
             any  patents  that are  reissues,  re-examinations,  continuations,
             continuations-in-part,  divisions, renewals, extensions, patents of
             addition or the like thereof.

1.6          HUMAN ALPHA-1  ADRENERGIC  RECEPTORS  shall mean those receptors so
             defined by references to Genbank Accession Numbers as follows:


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                    Subtype                            Genbank Accession Nos.

                    alpha-1a                           U02569, U03866, D25235
                    alpha-1b                           U03865, M99590
                    alpha-1d                           S70782, U03864

1.7          MAJOR MARKET COUNTRY shall mean any of the following
             countries:  the United States, France, Germany, Italy or
             the United Kingdom.

1.8          MERCK PRODUCT  shall mean a product being  developed or marketed by
             MERCK for the  treatment  of BPH which is subject to a license from
             SYNAPTIC under any of the PATENTS.

1.9          NET SALES  shall mean,  with  respect to each of BPH  PRODUCTS  and
             SELECTIVE ALPHA-1a  ADRENERGIC  RECEPTOR PRODUCTS which are not BPH
             PRODUCTS,  the gross  invoice  price of all such  PRODUCTS  sold by
             GLAXO and its AFFILIATES to independent  third parties,  after
             deducting,  if not already deducted in the amount invoiced:

                      1.     all goods returned;

                      2.     trade discounts;


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                      3.     rebates and allowances of invoiced
                             price; and

                      4.     Seven (7%) of the gross  invoice price of all sales
                             to cover  early  settlement  discounts  (where such
                             discounts are  non-discretionary) and excise, sales
                             and other taxes which GLAXO and its AFFILIATES have
                             to pay or absorb.

1.10         PATENTS  shall  mean the  FUNCTIONAL  USE  PATENT(S)  and  RECEPTOR
             PATENT(S), or any of the foregoing.

1.11         RECEPTOR PATENT(S) shall mean the United States patent set forth in
             Schedule  B  hereto,  the  foreign  counterparts  thereto,  and any
             patents   that  are   reissues,   re-examinations,   continuations,
             continuations-in-part,  divisions, renewals, extensions, patents of
             addition or the like thereof.

1.12         SELECTIVE  ALPHA-1a  ADRENERGIC  RECEPTOR  COMPOUND  shall mean any
             compound  which has an affinity for the human  alpha-1a  adrenergic
             receptor  which  is more  than  ten  (10)  times  greater  than its
             affinity for another  Human  Alpha- 1  Adrenergic  Receptor and the
             mechanism of action of which in vivo  involves  the human  alpha-1a
             adrenergic receptor.

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<PAGE>


1.13         SELECTIVE  ALPHA-1a  ADRENERGIC  RECEPTOR  PRODUCT  shall  mean any
             prescription   or   over-the-counter   pharmaceutical   preparation
             containing  SELECTIVE ALPHA-1a ADRENERGIC RECEPTOR  COMPOUND(S) for
             use in human or non-human animals.

1.14         TERRITORY shall mean all countries of the world.

1.15         THERAPEUTIC  INDICATION  shall mean,  with respect to any SELECTIVE
             ALPHA-1a ADRENERGIC  RECEPTOR PRODUCT,  the main therapeutic use as
             classified  in the  2nd  level  of the  World  Health  Organization
             Anatomical, Therapeutic, Clinical (ATC) drug classification system.

1.16         VALID  PATENT shall mean,  with  respect to any of the PATENTS,  an
             issued and  unexpired  patent,  at least one of the claims of which
             has not been (a) declared  invalid or  unenforceable  by a court of
             competent  jurisdiction  from which no appeal can be or is taken or
             (b) admitted by SYNAPTIC to be invalid.

                ARTICLE 2 - OPTION GRANT; OPTION AND LICENSE FEES

2.1          SYNAPTIC  grants to GLAXO an option  (the  "Option")  to obtain the
             non-exclusive license described in Article 3.2 below upon the terms
             and conditions set forth in this Agreement.

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<PAGE>

2.2          As  consideration  for the  Option  and the  nonexclusive  licenses
             described  in  Article   3.1,   GLAXO  shall  make  to  SYNAPTIC  a
             non-refundable,  noncreditable  payment of $2,000,000  (two million
             dollars)  within 10 days of  receipt of an  invoice  from  Synaptic
             following execution of this Agreement.

2.3          The Option shall be exercisable by GLAXO in accordance with Article
             2.4 at any time from execution of this Agreement until May 22, 1999
             (the  "EXPIRATION  DATE")  after which date it shall  automatically
             expire.

2.4          The Option shall be  exercisable by delivery of written notice from
             GLAXO to  SYNAPTIC  prior to the  EXPIRATION  DATE  along  with the
             payment of [**] by GLAXO to SYNAPTIC.
             GLAXO  shall  provide  MERCK with a copy of the  written  notice to
             SYNAPTIC.

                           ARTICLE 3 - LICENSE GRANTS

3.1    (a)              SYNAPTIC hereby grants to GLAXO and its AFFILIATES
                        throughout the TERRITORY, for the sole purpose of
                        developing, making, having made, using and selling
                        SELECTIVE ALPHA-1a ADRENERGIC RECEPTOR PRODUCTS
                        which are not BPH PRODUCTS, a non-

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                        exclusive license under any of the RECEPTOR PATENTS.
                        The license grant in this Article 3.1(a) shall extend
                        back in time to apply to acts by GLAXO prior to
                        the Effective Date of this AGREEMENT.

       (b)              For the  period  beginning  on the  Effective  Date  and
                        ending on the EXPIRATION DATE, SYNAPTIC hereby grants to
                        GLAXO and its AFFILIATES,  throughout the TERRITORY, for
                        the sole purpose of developing,
                        making,  having  made  and  using  but not  selling  BPH
                        PRODUCTS  a  non-exclusive  license  under the  RECEPTOR
                        PATENTS.  The license grant in this Article 3.1(b) shall
                        extend  back in time to apply to acts by GLAXO  prior to
                        the Effective Date of
                        this AGREEMENT.

       (c)              For the  period  beginning  on the  Effective  Date  and
                        ending on the EXPIRATION DATE, SYNAPTIC hereby grants to
                        GLAXO and its AFFILIATES,  throughout the TERRITORY, for
                        the sole purpose of developing,  making, having made and
                        using  but not  selling  BPH  PRODUCTS  a  non-exclusive
                        license under the FUNCTIONAL USE PATENTS.

3.2             Upon  exercise of the Option,  SYNAPTIC  grants to GLAXO and its
                AFFILIATES  throughout  the  TERRITORY,  for the sole purpose

                                       8

<PAGE>

                of developing, making,  having  made,   using  and  selling  BPH
                PRODUCT(S) a non-exclusive license under the PATENTS.

                                ARTICLE 4 - WARRANTIES AND PATENT VALIDITY

4.1             SYNAPTIC  represents  and  warrants  to  GLAXO  that  as of  the
                Effective  Date it  possesses  the rights  required to grant the
                licenses under Article 3 hereof.

4.2             SYNAPTIC and GLAXO each shall immediately give notice
                to the other of any certification of which they become
                aware filed under the U.S. "Drug Price Competition and
                Patent Term Restoration Act of 1984" claiming that a
                FUNCTIONAL USE PATENT or a RECEPTOR PATENT covering a
                SELECTIVE ALPHA-1a ADRENERGIC RECEPTOR PRODUCT
                (including a BPH PRODUCT) is invalid or that
                infringement will not arise from the manufacture, use
                or sale of BPH PRODUCT by a third party.  The parties
                agree to discuss and cooperate on an appropriate
                course of subsequent action.

4.3             SYNAPTIC  shall  promptly  give  notice  to GLAXO of the  grant,
                lapse,  revocation,   surrender,   invalidation  or  intentional
                abandonment of any PATENTS  licensed to GLAXO for which SYNAPTIC
                is responsible for the filing, prosecution and maintenance.

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<PAGE>


4.4             GLAXO   acknowledges  that  the  licenses  and  options  granted
                hereunder  do not convey the right under any PATENTS to develop,
                make,  have made,  use or sell any compound  whose  mechanism of
                action does not involve an
                alpha-1a adrenergic  receptor.  GLAXO warrants that it shall not
                infringe any VALID PATENT owned by SYNAPTIC by  activities as to
                which  SYNAPTIC  has  not  expressly  granted  rights  to  GLAXO
                hereunder or under any other agreement.

                    ARTICLE 5 - MILESTONE AND OTHER PAYMENTS

5.1             In consideration of the rights granted under this
                AGREEMENT, the following non-creditable and non-
                refundable payments will be made by GLAXO on only
                the first achievement of the following milestones,
                regardless of the number of times thereafter that
                such milestones are again achieved, provided that
                GLAXO has a license under the FUNCTIONAL USE PATENTS
                at the time the applicable milestone is achieved:

       (a)              [**] due within thirty
                        (30)  days  of the filing of a New Drug
                        Application for BPH PRODUCT with the United
                        States Food and Drug Agency (FDA) or  the filing
                        of its equivalent with an AGENCY in another
                        MAJOR MARKET COUNTRY in the event that

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                        GLAXO or an AFFILIATE makes such filing of a New Drug
                        Application or its equivalent prior to such a
                        filing by MERCK on a MERCK PRODUCT.

       (b)              If the  MERCK-SYNAPTIC  AGREEMENT is terminated prior to
                        December   31,  2000  then  GLAXO  shall  pay   SYNAPTIC
                        [**] within thirty (30) days
                        of  entry  into  Phase  III  of a  BPH  PRODUCT  or  the
                        equivalent entry in another
                        MAJOR MARKET COUNTRY.

5.2             If the MERCK-SYNAPTIC AGREEMENT is terminated
                subsequent to May 22, 1999, but prior to December 31,
                2000 then GLAXO shall have the option to obtain
                exclusive rights under the FUNCTIONAL USE PATENT(S),
                if available at the time of termination, by payment
                of an additional [**] to
                SYNAPTIC provided that the Option has been exercised
                under and in accordance with Article 2.4.  If the
                MERCK-SYNAPTIC AGREEMENT is terminated prior to May
                23, 1999, then GLAXO shall have the option to obtain
                exclusive rights under the FUNCTIONAL USE PATENT(S),
                if available at the time of termination, by payment
                of an additional [**] to
                SYNAPTIC, provided that the Option is exercised under
                and in accordance with Article 2.4 prior to the
                exercise  of  the  option  contemplated  by  this  Article  5.2.
                SYNAPTIC shall promptly notify GLAXO of any such  termination

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<PAGE>

                if
                exclusive  rights under the  FUNCTIONAL  USE  PATENT(S) are then
                available.  GLAXO's  option  under  this  Article  5.2  shall be
                exercisable  by the  delivery  of written  notice of exercise to
                SYNAPTIC,  together with the  [**]
                payment,  within 60 days following GLAXO's receipt of SYNAPTIC's
                notification.  Promptly  upon  receipt of the written  notice of
                exercise and the  [**] payment,  SYNAPTIC and GLAXO shall
                enter into good faith  negotiations  concerning the terms of the
                exclusive  license.  SYNAPTIC shall not enter into  negotiations
                with a third party with  respect to a license to the  FUNCTIONAL
                USE PATENT(S)  during the 180-day  period  following  SYNAPTIC's
                receipt of the notice of exercise and payment. GLAXO's option to
                obtain exclusive rights under the FUNCTIONAL USE PATENT(S) under
                this  Article 5.2 shall  automatically  expire at the end of the
                aforementioned 60-day period if not exercised within such period
                in  accordance  with this  Article 5.2 or if an agreement is not
                consummated within the aforementioned 180-day period.
                 In the  event  SYNAPTIC  and  GLAXO  are  unable  to  reach  an
                agreement  concerning  the  terms of an  exclusive  license  and
                GLAXO's  option to obtain such a license thus expires at the end
                of the 180-day  period,  SYNAPTIC shall promptly return to GLAXO
                the [**] payment previously received from GLAXO.

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                              ARTICLE 6 - ROYALTIES

6.1    (a)      In any country in the TERRITORY in which the
                        manufacture, use or sale of a BPH PRODUCT would
                        infringe a VALID FUNCTIONAL USE PATENT but for
                        a license hereunder, GLAXO shall pay to SYNAPTIC
                        a royalty on NET SALES of such BPH PRODUCT of
                        [**] percent [**].

       (b)      In the event that GLAXO has more than one product
                        subject to royalties under Section 6.1(a) for a
                        single THERAPEUTIC INDICATION on sale in any
                        country within the TERRITORY during any calendar
                        quarter, GLAXO shall pay to SYNAPTIC (i) the
                        royalty in 6.1(a) on only the product for such
                        therapeutic indication of highest NET SALES in
                        such country calculated for that calendar
                        quarter  and (ii) a royalty  on NET SALES of each  other
                        product for such therapeutic  indication of [**] percent
                        [**].

6.2    (a)              For any SELECTIVE ALPHA-1A ADRENERGIC RECEPTOR
                        PRODUCT the manufacture, use or sale of which is
                        not within Section 6.1 above, GLAXO shall pay to
                        SYNAPTIC a royalty of [**] percent [**] on NET
                        SALES of such PRODUCT until expiration of the
                        last to expire of the RECEPTOR PATENTS, provided
                        that there is a VALID

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                        RECEPTOR PATENT in  a
                        MAJOR MARKET COUNTRY at the relevant date.

       (b)              In the event that GLAXO has more than one product
                        subject to royalties under Section 6.2(a) for a
                        single THERAPEUTIC INDICATION, on sale in any
                        country within the TERRITORY during any calendar
                        quarter, GLAXO shall pay the royalty in 6.2(a)
                        on only the product for such therapeutic
                        indication of highest NET SALES in such country
                        calculated for that calendar quarter.

6.3             In the event that MERCK has not sold MERCK PRODUCT
                during any portion of a calendar year in any country
                in the TERRITORY and annual NET SALES of BPH PRODUCT
                exceed $500,000,000.00 (five hundred million
                dollars), an additional two percent (2%) royalty will
                be paid by GLAXO to SYNAPTIC on the excess NET SALES
                of BPH PRODUCT above $500,000,000.00 (five hundred
                million dollars) for that calendar  year, provided
                that there is an existing royalty obligation under
                Article 6.

6.4             In the event that MERCK  has sold MERCK PRODUCT
                during any portion of a calendar year in any country
                in the TERRITORY and annual NET SALES of BPH PRODUCT
                exceed $300,000,000.00 (three hundred million
                dollars), an additional two percent (2%) royalty will
                be paid by GLAXO to SYNAPTIC on

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<PAGE>

                the excess NET SALES
                of BPH PRODUCT above $300,000,000.00 (three hundred
                million dollars) for that  calendar year, provided
                that there is an existing royalty obligation under
                Article 6.

6.5             Sales   between  GLAXO  and  its   AFFILIATES,   or  among  such
                AFFILIATES,  for subsequent sales to an independent  third party
                shall not be subject to royalty, but in such cases royalty shall
                be calculated upon GLAXO's or its AFFILIATE's NET SALES to such
                independent third party.

6.6              The  obligation  to pay  royalties  is  imposed  only once with
                 respect to the same unit of product.

                       ARTICLE 7 - ACCOUNTING AND REPORTS

7.1             GLAXO shall deliver to SYNAPTIC within sixty (60) days after the
                end of each calendar quarter a written account, including value,
                of GLAXO's and GLAXO's  AFFILIATES' NET SALES subject to royalty
                payments  and the amount of the royalty  payment due to SYNAPTIC
                for such quarter on a country by country basis.

7.2             When GLAXO delivers the accounting to SYNAPTIC, GLAXO
                shall also deliver all royalty payments due to
                SYNAPTIC for the calendar quarter, provided however
                that any additional royalty


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<PAGE>

                payable under Article 6.4
                may be payable within 60 days following GLAXO's
                receipt of notification by SYNAPTIC that MERCK has
                sold MERCK PRODUCT during any portion of the calendar
                year in any country in the TERRITORY.

7.3             GLAXO shall keep accurate records in sufficient
                detail to enable the amounts due to SYNAPTIC to be
                determined. Upon SYNAPTIC's request, GLAXO shall
                permit an independent, certified public accountant
                selected by SYNAPTIC, except one to whom GLAXO has
                reasonable objection, to have access during ordinary
                business hours to GLAXO's records necessary to
                determine the correctness of any report or payment
                made in respect to any calendar quarter and obtain
                information as to the amount payable to SYNAPTIC for
                any such period in case of GLAXO's failure to report
                or make payment.  Such examination shall be at
                SYNAPTIC's expense and shall not take place more than
                once each year; provided, however, that in the event
                it is determined that amounts paid to SYNAPTIC were
                more than five percent (5%) less than the amounts to
                which SYNAPTIC was entitled, the expenses of such
                examination shall be borne by GLAXO and GLAXO shall
                pay SYNAPTIC the amounts due but not previously paid
                within thirty (30) days following notice of such
                determination, together with interest thereon from
                the date as of which such amounts were originally
                payable to the date of payment at the prime rate plus
                two percent (2%).  These rights

                                       16

<PAGE>

                with respect to any year shall terminate three (3) years after
                the end of any such year.  Information supplied to SYNAPTIC by
                such independent,  certified public accountant shall not include
                any  proprietary  information not required to be disclosed under
                other sections of this AGREEMENT.

7.4             All payments to be made by GLAXO to SYNAPTIC under
                this AGREEMENT shall be made in United States
                dollars by bank wire transfer in immediately
                available funds.  In the case of sales outside the
                United States, the rate of exchange to be used in
                computing the amount of currency equivalent in
                United States dollars due SYNAPTIC shall be made at
                the rate of exchange utilized by GLAXO in its
                worldwide accounting system, prevailing on the
                fourth-to-the last business day of the calendar
                quarter.

7.5             During the term of this AGREEMENT, GLAXO shall
                notify SYNAPTIC  within 30 days of achievement of
                any of the milestones referred to in Article 5.1 in
                respect of a BPH PRODUCT and within 30 days of the
                filing of a New Drug Application for any other
                SELECTIVE ALPHA-1a ADRENERGIC RECEPTOR PRODUCT with
                the United States Food and Drug Agency (FDA) or its
                equivalent with an AGENCY in another MAJOR MARKET
                COUNTRY and on which royalties would be due pursuant
                to this AGREEMENT.

                                       17

<PAGE>

7.6             Any income tax or other tax which GLAXO is required
                by law to pay or withhold with respect to royalties
                payable under this Agreement shall be deducted from
                the amount of royalties otherwise due provided that
                in regard to any such deduction GLAXO shall give
                SYNAPTIC such assistance as may reasonably be
                necessary to enable or assist SYNAPTIC to claim
                exemption therefrom and shall provide to SYNAPTIC
                promptly proper evidence as to the payment of the
                tax.

7.7             Distribution  of  products  as free  samples  by  GLAXO  and its
                AFFILIATES  to  independent  parties  shall  not be  subject  to
                royalties as long as in any calendar year the  aggregate  amount
                of such  products  provided as free  samples does not exceed two
                percent  (2%) of the units of such  products on which  royalties
                are paid.

                           ARTICLE 8 - CONFIDENTIALITY

8.1             All SYNAPTIC or GLAXO confidential information which
                is disclosed by either party and identified as
                confidential information at the time of disclosure
                during the term of this Agreement shall be
                maintained in confidence by the receiving party and
                shall not be disclosed to any other person, firm, or
                agency, governmental or private, without the prior
                written

                                       18

<PAGE>

                consent of the disclosing party, except to
                the extent that such SYNAPTIC or GLAXO information:

       (a)      is or becomes part of the public domain through no
                fault of the receiving party; or

       (b)      is  subsequently  disclosed to the receiving  party by a
                third party not under an obligation  of  confidentiality
                to the disclosing party; or

       (c)      is known at the time of its receipt by the receiving
                party as documented by written records; or

       (d)      is independently developed by the receiving party as
                documented by written records; or

       (e)      is legally required to be disclosed.

8.2             The  obligations of this Article 8 shall survive  termination or
                expiration of this AGREEMENT for a period of ten (10) years.

                              ARTICLE 9 - DURATION

                9.1  This  AGREEMENT  becomes  effective  as of the day and year
                first  above  written  and may be  terminated  as set  forth  in
                Article 10  hereof.  If GLAXO  does not  exercise  the option in

                                       19

<PAGE>
                
                accordance  with ARTICLE 2, this AGREEMENT shall expire upon the
                expiration  of the last  RECEPTOR  PATENT  to  expire.  If GLAXO
                exercises the Option in accordance with Article 2, the AGREEMENT
                expires upon the later of the expiration of the last  FUNCTIONAL
                USE PATENT or the last RECEPTOR PATENT to expire.  At such time,
                the rights and  licenses  granted to GLAXO under this  AGREEMENT
                shall be fully  paid up and  shall  continue  in full  force and
                effect and no further  payments  shall be due under the terms of
                this AGREEMENT.

                            ARTICLE 10 - TERMINATION

10.1            Upon any material  breach by either party under this  AGREEMENT,
                in addition to any other remedy it may have, the other party may
                terminate  this  AGREEMENT by ninety (90) days written notice to
                the breaching party,  specifying the material breach, default or
                other defect.  The termination shall become effective at the end
                of the ninety (90) day period unless the  breaching  party cures
                the breach during the ninety (90) day period.

10.2            Either party may  terminate  this  AGREEMENT  with notice if the
                other  party  becomes  insolvent,  makes an  assignment  for the
                benefit of creditors, is the subject of proceedings in voluntary
                (other  than  for  re-organization)  or  involuntary  bankruptcy

                                       20

<PAGE>
                instituted on behalf of or against such party, or has a receiver
                or  trustee  appointed  for  all  or  substantially  all  of its
                property; provided that in the case of an involuntary bankruptcy
                proceeding such right to terminate  shall only become  effective
                if the party  consents  to the  involuntary  bankruptcy  or such
                proceeding  is not  dismissed  within ninety (90) days after the
                filing thereof.

10.3            Any expiration or early  termination of this AGREEMENT  shall be
                without  prejudice  to the rights of either  party  against  the
                other  accrued  or  accruing  under  this  AGREEMENT   prior  to
                termination,  including  the  obligation  to pay  royalties  for
                product sold prior to such termination.

                           ARTICLE 11 - GOVERNING LAW

11.1            This AGREEMENT  shall be construed and the respective  rights of
                the parties hereto determined  according to the substantive laws
                of the  State  of New  Jersey,  notwithstanding  the  provisions
                governing  conflict of laws under such law to the  contrary.  In
                the event of any controversy or claim relating to this AGREEMENT
                or breach thereof,  the parties shall use reasonable  efforts to
                develop   practical   solutions  of  mutual  benefit  to  settle
                conflicts amicably between themselves.

                                       21

<PAGE>

                             ARTICLE 12 - ASSIGNMENT

12.1            Neither  party may  assign  this  AGREEMENT  in whole or in part
                without the prior written consent of the
                other, except that no such consent shall be required in the case
                of GLAXO if GLAXO assigns this  AGREEMENT to an AFFILIATE  whose
                obligations  GLAXO  guarantees  and in the case of  SYNAPTIC  if
                SYNAPTIC  assigns  this  AGREEMENT to a third party who acquires
                all or substantially all of its business.

                             ARTICLE 13 - SEVERANCE

13.1            If any  provision  of this  Agreement  is held to be  invalid or
                unenforceable,  all other provisions shall nevertheless continue
                in full force and effect,  unless there is a material  change in
                the benefits and/or rights received under this AGREEMENT.

                             ARTICLE 14 - AMENDMENT

14.1            This AGREEMENT and all Schedules  appended hereto constitute the
                entire agreement  between the parties and supersede all previous
                arrangements   whether   written  or  oral.   Any  amendment  or
                modification  to this  AGREEMENT  shall be made in  writing  and
                signed by both parties.

                                       22

<PAGE>
                               ARTICLE 15 - NOTICE

15.1            Notices to SYNAPTIC shall be addressed to:

                       Synaptic Pharmaceutical Corporation
                                215 College Road
                            Paramus, New Jersey 07652

                              Attention: President

                Notices to GLAXO shall be addressed to:

                               Glaxo Group Limited
                              Glaxo Wellcome House
                                 Berkeley Avenue
                                    Greenford
                                    Middlesex
                                     UB6 ONN
                                 UNITED KINGDOM

                          Attention: Company Secretary

                Either party may change its address by
                giving notice to the other party in the
                manner herein  provided.  Any notice required or provided for by
                the  terms of this  AGREEMENT  shall be in  writing  and sent by
                registered or certified mail, return receipt requested,  postage
                prepaid or by express  courier  services  providing  evidence of
                delivery and properly addressed in accordance with the paragraph
                above.  The effective date of notice shall be the actual date of
                receipt by SYNAPTIC or GLAXO.

                                       23

<PAGE>

                           ARTICLE 16 - FORCE MAJEURE

16.1            No failure or omission by the parties hereto in the  performance
                of any obligation of this AGREEMENT  shall be deemed a breach of
                this  AGREEMENT or create any  liability if the same shall arise
                from any cause or causes  beyond  the  control  of the  parties,
                including,  but not limited to, the following:  act of God; acts
                or omissions of any government; any rules, regulations or orders
                issued  by  any  governmental   authority  or  by  any  officer,
                department,  agency or  instrumentality  thereof;  fire;  storm;
                flood; earthquake; accident; war; rebellion; insurrection; riot;
                invasion;  strikes;  and lockouts and provided that such failure
                or omission  resulting  from one of the above causes is cured as
                soon as is  practicable  after the  occurrence of one or more of
                the above-mentioned causes.


                          ARTICLE 17 - INDEMNIFICATION

17.1           GLAXO will indemnify and hold SYNAPTIC and MERCK harmless with
               respect to any  injury,  loss or cost  resulting  from  exercise
               by GLAXO of the licenses granted to GLAXO by SYNAPTIC under this
               AGREEMENT.

                                       24
<PAGE>

                        ARTICLE 18 - PUBLIC ANNOUNCEMENTS

18.1            Any public  announcements  or similar  publicity with respect to
                this AGREEMENT or the rights granted  hereunder shall be at such
                time and in such  manner  as  SYNAPTIC  and GLAXO  shall  agree;
                provided that nothing herein shall prevent either party upon
                notice to the other from  making such  public  announcements  as
                such party's legal obligations require.

                           ARTICLE 19 - MISCELLANEOUS

19.1            It  is  expressly  agreed  that  GLAXO  and  SYNAPTIC  shall  be
                independent  contractors and that the  relationship  between the
                two parties shall not constitute a partnership, joint venture or
                agency.  Neither GLAXO nor SYNAPTIC  shall have the authority to
                make any statements, representations or commitments of any kind,
                or to take any action, which shall be binding on the other party
                without the prior written consent of such other party.


                                       25
<PAGE>



19.2            This AGREEMENT may be executed in two or more counterparts, each
                of which shall be deemed an original,  but all of which together
                shall constitute one and the same instrument.



GLAXO GROUP LIMITED                        SYNAPTIC PHARMACEUTICAL CORPORATION

By: /s/Jeremy Strachaw                      By:/s/Kathleen P. Mullinix
    ------------------                         -----------------------
Title: Director                             Title: Chairman, President & CEO
Date:  March 5, 1998                        Date:




                                       26
<PAGE>



                                   SCHEDULE A


                             FUNCTIONAL USE PATENTS


                USP 5,403,847
                USP 5,578,611










                                       27



<PAGE>


                                   SCHEDULE B


                                RECEPTOR PATENTS




                USP 5,556,753


                                       28


                                                                EXHIBIT 23.1
                                                                ------------


                         Consent of Independent Auditors

We consent to the incorporation by reference in the Registration Statement (Form
S-8 No. 333- 05793) pertaining to the 1988 Amended and Restated  Incentive Plan,
1996  Incentive  Plan and the 1996  Nonemployee  Director  Stock  Option Plan of
Synaptic Pharmaceutical Corporation of our report dated January 30, 1998 (except
for the second paragraph of Note 11 as to which the date is March 2, 1998), with
respect to the  financial  statements  of  Synaptic  Pharmaceutical  Corporation
included in the Annual Report (Form 10-K) for the year ended December 31, 1997.


                                                   /s/ ERNST & YOUNG LLP

Hackensack, NJ
March 26, 1998


                                                                  EXHIBIT 24
                                                                  ----------
                                POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS,  that each person whose  signature  appears
below  constitutes and appoints each of Kathleen P. Mullinix and Lisa L. Reiter,
or either of them, such person's true and lawful attorney-in-fact and agent with
full power of substitution  and re-  substitution  for such person and in his or
her name, place and stead, in any and all capacities, to sign this Annual Report
on Form 10-K and any or all  amendments  thereto and to file the same,  with all
exhibits  thereto,  and  other  documents  in  connection  therewith,  with  the
Securities and Exchange  Commission  and the National  Association of Securities
Dealers, granting unto said attorney-in-fact and agent full power and authority,
to do and perform each and every act and thing requisite or necessary to be done
in and about the premises, to all intents and purposes and as fully as he or she
might or could do in  person,  hereby  ratifying  and  confirming  all that said
attorney-in-fact  and agent or her  substitutes  may  lawfully do or cause to be
done by virtue hereof.



          Signature                       Title                     Date       
- ------------------------------     ----------------------      --------------

/s/ Kathleen P. Mullinix           Chairman of the Board,      March 13, 1998
- ------------------------------     President, and Chief
Kathleen P. Mullinix               Executive Officer


/s/ Robert L. Spence               Senior Vice President,      March 12, 1998
- ------------------------------     Chief Financial Officer,
Robert L. Spence                   and Treasurer


/s/ Jonathan J. Fleming            Director                    March 13, 1998
- ------------------------------                                               
Jonathan J. Fleming


/s/ Zola P. Horovitz, Ph.D         Director                    March 13, 1998
- ------------------------------                                               
Zola P. Horovitz, Ph.D


/s/ Eric R. Kandel, M.D            Director                    March 13, 1998
- ------------------------------                                               
Eric R. Kandel, M.D


/s/ John E. Lyons                  Director                    March 13, 1998
- ------------------------------                                               
John E. Lyons


/s/ Sandra Panem, Ph.D             Director                    March 13, 1998
- ------------------------------                                               
Sandra Panem, Ph.D


/s/ Alison Taunton-Rigby, Ph.D     Director                    March 13, 1998
- ------------------------------                                               
Alison Taunton-Rigby, Ph.D

<TABLE> <S> <C>

<ARTICLE> 5
       
<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-END>                               DEC-31-1997
<CASH>                                      23,113,000
<SECURITIES>                                38,987,000
<RECEIVABLES>                                   40,000
<ALLOWANCES>                                         0
<INVENTORY>                                          0
<CURRENT-ASSETS>                            34,437,000
<PP&E>                                       8,447,000
<DEPRECIATION>                               3,765,000
<TOTAL-ASSETS>                              69,402,000
<CURRENT-LIABILITIES>                        1,698,000
<BONDS>                                              0
                                0
                                          0
<COMMON>                                       105,000
<OTHER-SE>                                  67,599,000
<TOTAL-LIABILITY-AND-EQUITY>                69,402,000
<SALES>                                              0
<TOTAL-REVENUES>                            10,307,000
<CGS>                                                0
<TOTAL-COSTS>                               17,853,000
<OTHER-EXPENSES>                                     0
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<INTEREST-EXPENSE>                               5,000
<INCOME-PRETAX>                            (5,346,000)
<INCOME-TAX>                                         0
<INCOME-CONTINUING>                        (5,346,000)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                               (5,346,000)
<EPS-PRIMARY>                                   (0.66)
<EPS-DILUTED>                                   (0.66)
        

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