SYNAPTIC PHARMACEUTICAL CORP
10-K, 2000-03-24
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, 1999

                                       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
$76,278,000 as of February 15, 2000,  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  February  15,  2000,  there  were  10,767,311   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, 1999, in connection with the
registrant's  2000  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, 1999



                                     Part I
                                                                          Page
                                                                          ----
Item  1. Business.....................................................      1
Item  2. Properties...................................................     25
Item  3. Legal Proceedings............................................     25
Item  4. Submission of Matters to a Vote of Securityholders...........     25

                                     Part II

Item  5. Market for Registrant's Common Equity and Related
           Stockholder Matters........................................     26
Item  6. Selected Financial Data......................................     27
Item  7. Management's Discussion and Analysis of Financial Condition
           and Results of Operations..................................     27
Item 7A. Quantitative and Qualitative Disclosures About Market Risk...     36
Item  8. Financial Statements.........................................     37
Item  9. Changes in and Disagreements with Accountants on Accounting
           and Financial Disclosure...................................     58

                                    Part III

Item 10. Directors and Executive Officers of the Registrant...........     58
Item 11. Executive Compensation.......................................     58
Item 12. Security Ownership of Certain Beneficial Owners
           and Management.............................................     58
Item 13. Certain Relationships and Related Transactions...............     58

                                     Part IV

Item 14. Exhibits, Financial Statement Schedules and Reports
           on Form 8-K................................................     59




                                       (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  in its genomics  program to discover and
clone the genes that code for human receptors. The Company and its licensees are
also utilizing this technology in functional  genomics  programs to discover the
function  of  these  receptors  in the  body  and  thus  specific  physiological
disorders with which they may be  associated.  The Company and its licensees are
in turn  utilizing  the  cloned  receptor  genes to  design  compounds  that can
potentially be developed as drugs for treating these disorders.

         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 target. The Company believes that
its technology provides four distinct  advantages over the traditional  approach
to drug  discovery  in which  compounds  are  screened  against  animal  tissues
containing  many  different  types of  receptors.  First,  by having an isolated
receptor 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
receptors  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  models.  Third,  Synaptic  believes  that  its  technology  may be  more
cost-effective  than  traditional  drug  discovery  because  the Company and its
licensees  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.  Fourth, once a compound designed with
this technology is tested in clinical trials,  the specific receptor targeted by
such compound may be validated as a useful intervention point of therapy.

         Synaptic focuses its receptor and drug discovery  efforts on members of
a receptor  superfamily known as "G  protein-coupled  receptors" or "GPCRs." The
Company  selected this receptor  superfamily for two principal  reasons.  First,
many GPCRs 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  GPCRs.  Second,  the  GPCR
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  receptors  within  the GPCR
superfamily as targets for novel drugs.

         The Company  began its genomics  program in 1988 shortly  following its
inception  and has since  that time  discovered  the genes  that code for many G
protein-coupled  receptors.  Gene discovery is, however,  just the first step in
the long process of drug discovery. In order for receptors to have value as drug
targets in the drug discovery process,  it is imperative that their functions in
the body be determined.  The multi-step process of determining the function of a
receptor  can be  described  as  "target  validation,"  which  occurs  only when
compounds  directed  toward the  receptor  of  interest  have been shown to have
therapeutic efficacy in a population of individuals who suffer from the disorder
in question. The data required to prove therapeutic

                                        1

<PAGE>



efficacy of such  compounds are available  only after the completion of Phase II
clinical  trials.   "Functional  genomics"  is  the  term  which  comprises  the
technologies that are involved in target validation.

         An  essential  step in the process of  validating  a receptor as a drug
target is  determining  the "family"  within the GPCR  superfamily  of which the
receptor is a member.  This  determination  is made by discovering  the specific
endogenous ligand with which the receptor preferentially  interacts.  Genes that
code for  receptors  whose  endogenous  ligand has not yet been  discovered  are
called "orphan receptors." Without knowing the family, or endogenous ligand, for
a receptor, it is difficult to generate pharmacological  information which might
suggest a function  for that  receptor  in the body and,  as a  consequence,  to
speculate on the role of an orphan receptor in specific physiological disorders.
The  Company  anticipated  several  years ago that,  as  worldwide  interest  in
sequencing the entire human genome increased, more and more discoveries from its
and  others'  genomics  programs  would be orphan  receptors.  Accordingly,  the
Company began to develop technologies that would facilitate the discovery of the
endogenous  ligands for orphan  receptors.  These efforts have culminated in the
successful  development  of an assay,  which the  Company  calls its  "Universal
Functional Assay" (UFA). By means of the Universal Functional Assay, the Company
has discovered the endogenous ligands for several orphan receptors.

         Synaptic  has  varying  levels of  expertise  in the many  steps of the
validation  process,  with its highest  expertise  in the  earlier  steps of the
validation  process.  In order to gain  access to  expertise  required to effect
steps where it has no expertise,  or its expertise is limited, the Company seeks
to  leverage  its  resources  by  entering  into   collaborative  and  licensing
arrangements with pharmaceutical companies. In these arrangements, the Company's
human  receptor-targeted  drug design technology is used through the preclinical
stage  of  the  drug  discovery  process  and  the  Company's  licensees  assume
responsibility  for conducting  clinical trials with compounds that successfully
complete the preclinical stage.

         Through  December 31, 1999,  the Company's gene  discoveries  resulting
from its genomics and functional programs had led to collaborations  between the
Company   and  a  number  of   pharmaceutical   companies.   In  four  of  these
collaborations, the Company and its collaborative partners Eli Lilly and Company
("Lilly"),  Merck & Co., Inc.  ("Merck"),  Novartis Pharma AG ("Novartis"),  and
Grunenthal  GmbH  ("Grunenthal"),  confirmed  the role of at least five receptor
targets in  specific  physiological  disorders  in  studies,  known as "proof of
concept" studies, in animal model systems.  Further, the Company's collaboration
with Lilly  yielded a compound that showed  substantial  efficacy in patients in
three Phase II clinical trials and thus validated the specific receptor targeted
by the compound as a target of drugs for the treatment of migraine headache. The
Company's  collaboration  with Merck yielded a compound that showed  substantial
efficacy in a Phase II clinical trial and thus  validated the specific  receptor
targeted  by that  compound  as a target  of drugs for the  treatment  of benign
prostatic hyperplasia ("BPH").  These compounds were subsequently withdrawn from
clinical trials in 1999 due to drug development concerns unrelated to Synaptic's
technology.

         In January 2000, the Company entered into a  collaborative  arrangement
with Kissei Pharmaceutical Co., Ltd. ("Kissei").  Unlike earlier arrangements in
which the Company's  collaborative partners licensed from the Company previously
cloned  receptor  genes whose  endogenous  ligands had at the time  already been
discovered by Synaptic,  Kissei is providing funding to the Company for research
in which the Company will utilize its genomics  technologies on behalf of Kissei
to discover  and clone novel  receptor  genes and to discover  their  endogenous
ligands.

         Certain   discussions  in  this  Report  refer  to  various  phases  of
preclinical  testing and clinical trials.  For a description of such phases, see
"Government Regulation" below.


                                        2

<PAGE>



Business Objectives

         Synaptic's   business   objectives   are  to  develop,   together  with
collaborative  partners,  a broad array of drugs based upon the Company's  human
receptor-targeted  drug  design  technology,  and  to  license  certain  of  its
technology  to third  parties  which  will  use the  technology  in  their  drug
development efforts. In order to achieve its objectives the Company employs five
principal strategies.

         To Discover and Clone G Protein-Coupled Receptor Genes

         The first strategy of the Company is to aggressively discover and clone
G protein-coupled  receptor genes and to aggressively seek patent protection for
such discoveries.

         The  Company's  original  approach  to gene  discovery  was a  targeted
genomics  approach,  which involves the use of the Company's  molecular  biology
expertise  to  discover  and  clone  receptor  genes  within  families  of GPCRs
identified  by the  Company  as being of  particular  interest  based upon their
potential  role in certain  physiological  disorders.  During  the past  several
years,  the  Company  has   successfully   developed  an  array  of  proprietary
technologies  related to a nontargeted approach to the discovery of GPCRs. These
technologies   involve  molecular  biology,   cell  biology  and  bioinformatics
algorithms. The receptor discoveries resulting from the nontargeted approach are
generally orphan receptors.

         As of February 18, 2000, Synaptic had successfully cloned many receptor
genes and had  received 50 patents  relating to 16 of these  receptor  genes and
related drug discovery  systems.  In addition,  at that date  additional  patent
applications  relating to the Company's receptor gene discoveries had been filed
in the United States and in other countries.

         To Develop a Broad Array of Functional Genomics Technologies

         The  Company's  second  strategy is to attempt to  validate  individual
GPCRs as drug targets. The Company has discovered,  and will continue to attempt
to discover,  technologies  that will facilitate an understanding of the various
functions of specific GPCRs in the body. One such technology is an assay,  which
the  Company  calls its  "Universal  Functional  Assay,"  that  facilitates  the
discovery of the endogenous ligands for GPCRs, a critical step in the process of
target  validation.  The Universal  Functional Assay allows for the screening of
the Company's proprietary  endogenous ligand library against orphan receptors of
interest.  The successful  application of the UFA is, however,  dependent on the
presence of the endogenous  ligand for the receptor of interest in the Company's
ligand  collection.  In an attempt to maximize the chances  that the  endogenous
ligand for a particular  receptor will be discovered,  the Company has developed
proprietary  algorithms  which it employs in  deciding  how best to enhance  and
expand its ligand collection.

         To Discover and Design Potential Drugs with Human Receptor-Targeted
             Drug Design Technology

         The  Company's  third  strategy is to discover  and design,  or to have
collaborative partners and other licensees discover and design,  potential drugs
through the use of the Company's human receptor-targeted drug design technology.
The Company and its  licensees are using this  technology to design,  synthesize
and optimize compounds for further development.  The Company's two approaches to
designing  and   synthesizing   compounds   include   medicinal   chemistry  and
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 ligands
and targeted receptors to design and synthesize initial chemical structures that
are then optimized.

                                        3

<PAGE>



         To Leverage Resources and Generate Royalty-Based Revenues

         The  Company's  fourth  strategy is to leverage  resources and generate
royalty-based  revenues through  collaborations and licensing  arrangements with
pharmaceutical  companies. As part of this strategy, the Company focuses most of
its scientific resources on the discovery of receptor genes and their endogenous
ligands,  the use of such genes as  potential  drug targets and the early design
phases  of  the  drug  discovery   process,   while  relying   predominately  on
collaborative  partners and other  licensees for preclinical  testing,  clinical
trials  and   commercialization.   With  respect  to  its  nontargeted  genomics
expertise,  the Company seeks to establish  collaborations  in which it utilizes
this  expertise  on behalf of its  collaborative  partners to discover and clone
novel receptor genes present in specific  tissues  selected by its partners and,
together  with those  partners,  attempts to link its  receptor  discoveries  to
specific  physiological   functions.   In  these  arrangements,   the  Company's
collaborative  partners  would  be  responsible  for all  late  preclinical  and
clinical  development  activities,  as well  as  commercialization  of any  drug
resulting  from any such  arrangement.  The  Company  may also,  as part of this
strategy,  seek to license certain of its receptor discoveries to pharmaceutical
companies,  which would then be solely responsible for any research necessary to
evaluate the  licensed  discoveries  as potential  drug targets and for any drug
discovery and development efforts focused on these discoveries.

         The  Company's   collaborative  and  licensing  arrangements  generally
provide for the payment to the Company of milestone payments upon the occurrence
of certain  events and royalties  tied to net sales of any drugs  resulting from
the use of the Company's  technology.  The  collaborative  arrangements may also
provide  for  financial  support for the  Company's  research.  By pursuing  the
objective  of  leveraging  resources  and  generating   royalty-based  revenues,
Synaptic  benefits  from the  expertise  and resources of its partners and other
licensees, while simultaneously maintaining relatively low capital requirements.
See "Joint Research Programs" and "Other Licensees' Programs" below."

         To Retain Ownership of Certain Products

         The Company's fifth strategy is to retain  ownership  rights to certain
products developed through the use of its technology.  The Company is seeking to
implement  this strategy 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  and  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.  In January
1998,  the Company  entered into a  collaboration  with  Grunenthal in which the
Company  participates  in  and  may  fund a  portion  of  the  drug  development
activities   conducted   as  part   of  the   collaboration.   See   "Grunenthal
Collaboration" under "Joint Research Programs" below.


                                        4

<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 GPCR
superfamily  are the serotonin,  adrenergic,  neuropeptide Y ("NPY") and galanin
families  of  receptors.  Each  member  of each  family  is  called a  "receptor
subtype."  If the  ligand  with  which a receptor  interacts  is not known,  the
receptor is called an "orphan receptor."

         Historically,  it was believed  that each family of receptors  had only
one or two members.  Scientists have discovered,  however, 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.

         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 marketed. In general,  however, these drugs do
not  differentiate  among receptor  subtypes and, while they may indeed interact
with the targeted  receptor  subtypes,  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.


                                        5

<PAGE>



         The  reason  that  many  of  these  currently  available  drugs  do not
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

         Advantages Over Traditional Approach

         Since its inception,  Synaptic's  goal has been to develop a technology
that will facilitate the design and development of drugs that are safer and more
efficacious than existing drugs. Toward that end, the Company has developed, and
continues  to  refine  and  expand,  its  human  receptor-targeted  drug  design
technology.   The  Company  believes  that  this  technology  can  overcome  the
limitations of the traditional approach to drug discovery. This technology makes
it possible not only to clone receptors  previously  believed or known to exist,
but also to discover and clone receptors which had previously been  undetectable
in animal tissues because they were present in concentrations  too low to detect
using traditional  pharmacological techniques. In addition, the Company believes
that the expansion of its technology platform to facilitate the discovery of the
endogenous  ligands for orphan  receptors and to determine  their functions will
enable it to extend  its reach  into the drug  discovery  process.  The  Company
believes  that  a  number  of  its  newly  discovered   receptors  will  provide
opportunities  for the design of novel drugs. In addition,  the Company believes
that its ability to access and to use individual  cloned human  receptors in its
and its licensees' drug design efforts will yield safer and more effective drugs
than those currently  available.  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 licensees can eliminate or
redesign  nonsubtype-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
receptors  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  receptors
included  within  different  receptor  families.  For  example,  in the  case of
obesity,  there  are  pharmacological  data  indicating  that NPY,  galanin  and
serotonin  receptors are involved in controlling food intake. 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

                                        6

<PAGE>



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.

       Industry-Shift from Traditional Approach Towards Use of Cloned Receptors

         Over the past decade, most of the major  pharmaceutical  companies have
developed a keen  interest in using  cloned  receptors in at least some of their
drug  discovery  efforts.  This  interest  coincides  with,  and  may in part be
responsible  for, the worldwide race to sequence the entire human genome.  While
worldwide  genomics efforts have resulted in the development of new technologies
which greatly accelerate the pace at which new receptors are discovered, most of
these  discoveries  are orphan  receptors.  Without  information  regarding  the
endogenous  ligands of these  receptors,  it is difficult to  hypothesize  about
their  role in  specific  physiological  functions.  As a  result,  these  newly
discovered  receptors  are, and will continue to be, of limited value as targets
for the  design  and  development  of drugs  until  their  biological  roles are
determined.

         As the new millennium commences, a principal focus of the biotechnology
and  pharmaceutical  industries  is upon  utilizing  the vast body of data being
generated with respect to cloned receptors to better understand these receptors,
their physiological  functions and their potential as targets for the design and
development of drugs that are safer and more  efficacious  than existing  drugs.
Synaptic believes that its human  receptor-targeted  drug design technology will
play  an  important  role  in  both  the  discovery  of new  receptors  and  the
elucidation of the functions of newly  discovered  receptors and their potential
as drug targets.

         Overview -- The Three Principal Steps

         The Company's human  receptor-targeted drug design technology has three
principal steps:

         (i)  Genomics.  Genomics is the discovery and cloning of the genes that
code for receptors.  In this step,  the Company's  molecular  biologists  employ
genetic engineering techniques,  molecular biology technologies,  automated gene
sequencing and  bioinformatics to discover and clone receptor genes. Many of the
component technologies in this step are proprietary to the Company.

         (ii)  Functional  Genomics.  Functional  genomics  is  the  term  which
comprises the  technologies  involved in the process of target  validation.  For
example,  certain functional genomics  technologies  facilitate the discovery of
the endogenous  ligands for receptors  and,  thus, the biological  roles of such
receptors in the body,  while others  involve  assays that  facilitate  both the
search for  compounds  that are  selective for the receptors of interest and the
use of selective  compounds in various  animal models of behavior and physiology
in an  attempt  to  provoke a  response  in an animal  model  system  that might
indicate the role of such receptors in the body. Observation of a response in an
animal model constitutes a confirmation,  or "proof of concept,"of a role of the
receptors  targeted by the selective  compounds and provides an  opportunity  to
develop hypotheses concerning the possible therapeutic utility of drugs that act
at the receptors of interest. There is no guarantee,  however, that effects seen
in animals  will also occur in humans.  The  downstream  steps in the process of
target validation include  preclinical testing and Phase I and Phase II clinical
trials. These steps are currently performed by Synaptic's collaborative partners
or licensees.

         (iii) Chemistry:  Compound  Design and  Optimization.  Chemistry, as it
relates to Synaptic's human receptor-targeted  drug  design technology, involves
two  principal  activities:  the  design and synthesis of  compounds  which  are
selective for the receptor of interest and which can thus be used  in  proof  of
concept studies;  and, following proof of concept, the optimization of selective
compounds to arrive at a compound

                                        7

<PAGE>



which has the desired pharmacological profile and which can thus proceed through
preclinical testing and clinical trials.


Drug Discovery Paradigm

         Set  forth  below  is a diagram  of the  Drug Discovery Paradigm, which
illustrates  various  steps  in  the  drug  discovery  process and the role that
Synaptic's human receptor-targeted drug design technology plays in this process.


                        DRUG DISCOVERY PARADIGM -- 2000
                        ===============================


 /--------------Synaptic Expertise------------/------"Big Pharma"-------------/

 /---Genomics---/--------------------Functional Genomics----------------------/

Gene Discovery   Functional Screening                Preclinical
 and Cloning     Assays     Assays                   Pharmacology
+-----+------+------+------+------+--------+-------+------+------+----------+
+     +      +      +      +      +        + Proof +      +      + Validated+
+     +      +      +      +      +        +  of   +      +      +  Targets +
+     +      +      +      +      +        +Concept+      +      +          +
+-----+------+------+------+------+--------+-------+------+------+----------+
                      Endogenous   Compound                Phase I
                       Ligand       Design and              Phase II
                        Identif-    Optimization             Efficacy Trials
                         ication


Research 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 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 GPCR 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 urinary  retention  resulting  from benign  prostatic  hyperplasia  ("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 and  licensees
can draw in beginning their drug discovery programs. Third, the GPCR superfamily
is extremely  large and,  based on several  estimates,  exceeds  1,000  receptor
subtypes  belonging  to more than 45 known  families  and an  unknown  number of
additional  families  the  endogenous  ligands of which either have not yet been
identified or have been identified but have not been publicly disclosed.


                                        8

<PAGE>



         The Company's human  receptor-targeted  drug design technology is being
utilized  or has  been  utilized  in a number  of  different  research  and drug
discovery programs.  Some of these programs are currently being conducted by the
Company   independently.   Others  may  have  been   conducted  by  the  Company
independently  or  in  collaboration  with  pharmaceutical   companies  but  are
currently inactive and available for licensing by the Company.  Finally, some of
the programs are being conducted by the Company in joint research  programs with
its collaborative partners or by the Company's licensees.

         Total operating expenses incurred by the Company for each of the fiscal
years  1999,  1998 and  1997  were  $19,652,000,  $19,576,000  and  $17,853,000,
respectively,  of which  approximately  $1,759,000,  $7,182,000 and  $9,785,000,
respectively,  was funded by the Company's  collaborative  partners  during such
years.  In 1998,  the Company  increased its internal  research and  development
spending  in  part as a  result  of the  expiration  of its  collaboration  with
Novartis and the  termination of the  associated  research  funding  provided by
Novartis. The Company again increased internal research and development spending
during  1999,  in part as a  result  of the  July  31,  1999  expiration  of its
collaboration with Lilly and the termination of the associated  research funding
provided by Lilly and the February 28, 1999 expiration of its collaboration with
Merck and the termination of the associated research funding provided by Merck.

         Certain of the programs in which the Company's human  receptor-targeted
drug design  technology  is being or has been  utilized  are  summarized  in the
following table:




















                                        9

<PAGE>



                               Summary of Certain
                      Research and Drug Discovery Programs


                                                                    Types [and
                                                                    Number] of
                                                                Issued U.S. and
Programs(1)              Subject Matter    Primary Indications  Foreign Patents
- --------------------------------------------------------------------------------

Company Programs
- ----------------
  Genomics Research     Gene Discovery     All Potent'l GPCR-based      --
                          and Cloning
  Functional Genomics
     Research           Target Validation  All Potent'l GPCR-based      --
     Undisclosed        --                 Urology                      --
     Undisclosed        --                 Obesity                      --
     Galanin            Galanin            Obesity, Diabetes,       Receptor [1]
                                            Alzheimer's Disease,
                                            Depression and Pain
     Neuropeptide Y     NPY                Depression and Pain     Receptor [10]

   Alpha 1a Antagonist  Alpha 1a           BPH                   Funct'l Use [9]
                                                                 Receptor [3]
                                                                 Chemistry [3]

Joint Research Programs
- -----------------------
   Grunenthal           Undisclosed        Pain                        --
   Kissei               Gene Discovery     Undisclosed                 --
                            and
                         Cloning/Target
                         Validation

Programs of Licensees
- ---------------------
   Lilly                Serotonin          Acute Migraine,       Funct'l Use [1]
                                           Depression            Receptor [31]
                                            and Obesity

   Novartis             NPY                Obesity               Receptor [10]

   Glaxo                Alpha 1a,1b or 1d  (2)                   Receptor [4]
- --------------------------------------------------------------------------------

(1)   The Company's  technology is being  utilized by certain of the Company and
      its  licensees in drug  discovery  programs in addition to those  programs
      referenced  in  the  above  table.  The  subjects  of  such  programs  are
      confidential to the Company.

(2)   Glaxo has a nonexclusive  license to use Synaptic's  alpha 1 receptors for
      certain  purposes,  but is not  required  to  provide  Synaptic  with  any
      information   regarding   such   use   unless   it  files  an  NDA  for  a
      royalty-bearing  compound under its agreement with Synaptic. Glaxo has not
      notified Synaptic of any such NDA filing.


                                       10

<PAGE>



Company Programs

         Genomics and Functional Genomics Research

         The Company  began its genomics  program in 1988 shortly  following its
inception  and has since  that time  discovered  the genes  that code for many G
protein-coupled  receptors. The Company continues to place considerable emphasis
on receptor gene discovery  and,  accordingly,  continues to devote  substantial
resources to its genomics  program.  Gene discovery is, however,  just the first
step in the long process of drug discovery. In order for receptors to have value
as drug  targets in the drug  discovery  process,  it is  imperative  that their
functions  in the body be  determined.  As a result,  the Company is  committing
significant  resources  to  the  development  and  utilization  of  technologies
designed both to  facilitate  the  discovery of the  endogenous  ligands for its
orphan  receptor  discoveries  and to further the overall  process of validating
receptors for which the  endogenous  ligands have been  discovered as targets of
drugs for specific physiological disorders.

                  Galanin Program

         One focus of the Company in its  functional  genomics  program has been
the  galanin  family  of  receptors.  The  neurotransmitter  galanin  is  widely
distributed in the  gastrointestinal  tract and the brain. 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.  The  immediate  objective of this
program is to achieve proof of concept of the biological function of one or more
galanin receptors in animal model systems.

         To date,  the  discovery  and  cloning  of the genes for three of these
subtypes have been reported. The Company believes that it is responsible for the
discovery  of two of the three  reported  genes that code for  galanin  receptor
subtypes.  As of  February  18,  2000,  the  Company  had been issued one patent
relating  to the GALR2  receptor  subtype.  As of that date,  additional  patent
applications relating to the Company's galanin discoveries had been filed in the
United States and in other countries.

         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.  As part of this program,
the Company and  Warner-Lambert  identified  galanin receptor  subtype-selective
compounds.  Under  the  terms of its  agreement  with  Warner-Lambert,  Synaptic
granted  Warner-Lambert  an exclusive  worldwide  license  under  certain of its
patent rights to develop and commercialize galanin agonists and antagonists.  In
May 1999,  this license  automatically  terminated  upon the  termination of the
agreement.  Synaptic is now seeking to license  this  program to a third  party.
There can be no assurance  that Synaptic  will be  successful in licensing  this
program to a third party or that any licensee  would be successful in developing
galanin receptor subtype-selective compounds.

                  NPY Program

         Neuropeptide Y is a neurotransmitter  that is widely distributed in the
nervous system and  gastrointestinal  tract.  Evidence from both pharmacological
studies and  molecular  cloning  demonstrates  the  existence  of  multiple  NPY
subtypes. NPY exerts a multitude of actions in the body which indicate potential
roles  for  the  control  of  appetite,  pain,  affective  disorders,  circadian
function, vasoconstriction, and

                                       11

<PAGE>



gastrointestinal motility. In addition, the administration of NPY has been shown
to greatly enhance food ingestion in several species, and selective  antagonists
of the Y5 receptor subtype suppress  appetite and lead to loss of body weight in
rodents. In addition to its role in feeding,  the Y5 receptor appears to mediate
circadian  function,  play a role in the  control of body  temperature,  and may
suppress  seizure   disorders.   NPY  has  also  been  shown  to  reduce  plasma
extravazation  in a  neurogenic  model  of  migraine  headache,  as  well  as to
constrict  blood vessels in a "cranial  window"  model for that same  condition,
both through the Y2 receptor subtype.

         To date,  the  discovery and cloning of the genes for four NPY receptor
subtypes have been reported. The Company believes that it is responsible for the
discovery of three of these subtypes, the Y2, Y4 and Y5 receptor subtypes. As of
February  18,  2000,  the Company had been issued ten patents  relating to these
receptors. As of that date, additional patent applications had been filed in the
United States and in other countries.

         The Company's NPY technology and related intellectual property, insofar
as they relate to obesity and  cardiovascular  disease,  are subject to licenses
granted  by the  Company to  Novartis.  See  "Novartis  Programs"  under  "Other
Licensees' Programs" below.

                  Alpha 1a Antagonist Program

         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.

         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 is  responsible  for the
discovery  of the  genes  that  code for the human  alpha-1a,  -1b,  -1d and -2b
receptors.  As of  February  18,  2000,  the Company  had  received  six patents
relating to these genes and related  drug  discovery  systems.  As of that date,
additional patent applications relating to certain of these genes had 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's  first  drug  discovery  program  involving  the alpha 1
adrenergic  receptors  focused  on  the  condition  known  as  benign  prostatic
hyperplasia ("BPH"). 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.


                                       12

<PAGE>



         Through the use of its alpha  adrenergic drug discovery  systems and by
means of in vivo studies in animals,  Synaptic discovered that different alpha 1
adrenergic 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 receptor subtypes are involved in the
regulation of blood pressure.  This discovery confirmed the Company's hypothesis
that  many  of the  side  effects  caused  by  nonselective  alpha-1  adrenergic
antagonists that were available for the treatment of BPH stemmed from their lack
of  selectivity  for the receptor  subtype  involved in  relaxation  of prostate
musculature.

         The Company,  in  collaboration  with Merck,  used the  Company's  drug
discovery  systems to design  compounds  that block the activity of the alpha-1a
receptor  subtype,  but that have  minimal  affinity  for  alpha-1b and alpha-1d
receptor subtypes. In studies involving the administration of alpha-1a selective
antagonists to animals,  "proof of concept"--that  the alpha-1a receptor subtype
is an appropriate target of drugs for the treatment of symptoms  associated with
BPH--was  demonstrated.  Further,  one  of  the  compounds  resulting  from  the
collaboration  was found in a Phase IIa clinical  trial to be efficacious in the
treatment  of BPH  without  cardiovascular  side  effects  seen  with  currently
available  nonselective alpha-1 adrenergic  antagonists,  thereby validating the
alpha-1a  receptor subtype as a target of drugs for the treatment of BPH. Due to
drug development  concerns  unrelated to Synaptic's  technology,  Merck withdrew
this compound  from  clinical  trials in 1999 and  subsequently  terminated  its
efforts to develop an alpha-1a antagonist for BPH.

         As of  February  18,  2000,  the  Company  had been  issued 15  patents
relating to its BPH program, nine of which are functional use patents that cover
the use of alpha-1a  antagonists  having defined  degrees of selectivity for the
alpha-1a  receptor subtype relative to one or both of the other alpha-1 receptor
subtypes for the treatment of BPH (the "BPH use patents"), three of which relate
to the human  alpha-1a  adrenergic  receptor  subtype  and three of which  cover
selective alpha-1a antagonists.  As of that date, additional patent applications
had been filed in the United States and in other countries.

         Under the terms of its agreement with Merck, Synaptic had 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.  In  addition,  Synaptic  had
granted  Merck  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 purpose. In March 2000, these licenses
automatically  terminated  upon the  termination of the Merck  agreement.  Merck
continues  to have a  non-exclusive  license to use certain  Synaptic  know-how.
However,  Synaptic  is now free to license  its  technology  and  patent  rights
relating to the BPH program to third parties and is currently  seeking licensees
for  such  patent  rights.  There  can be no  assurance  that  Synaptic  will be
successful  in licensing  this  technology  and related  patent  rights to third
parties or that any  licensee  would be  successful  in  developing  an alpha-1a
antagonist for the treatment of BPH.


Joint Research Programs

         A key element of the Company's  business  strategy has been to leverage
resources   and  to  attempt  to   generate   royalty-based   revenues   through
collaborative and licensing  arrangements  with  pharmaceutical  companies.  The
Company is currently  collaborating with two  pharmaceutical  companies pursuant
to: (i) the Cooperation  Agreement dated as of January 12, 1998, as amended (the
"Grunenthal  Agreement"),  with  Grunenthal  GmbH  ("Grunenthal")  and  (ii) the
Collaborative  Research and License  Agreement dated as of January 24, 2000 (the
"Kissei Agreement"), with Kissei. Concurrently with the establishment of these

                                       13

<PAGE>



collaborative  arrangements,  the Company granted certain rights with respect to
its technology and patent rights to Grunenthal and Kissei.  Set forth below is a
brief summary of these collaborative arrangements.

         Grunenthal Collaboration

         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. The basis of the collaboration
has been the  complementary  technologies  of the two  companies.  Synaptic  has
cloned the genes for many receptors  whose  biological  functions are not known.
Grunenthal  has a broad  expertise in various animal models of pain. The work of
the collaboration involves the coupling of the Company's human receptor-targeted
drug design technology with Grunenthal's expertise in pain-related technology in
an  attempt  first to  identify  receptors  that  could be targets of drugs that
alleviate pain and then to design and develop drugs targeted to such receptors.

         Under the terms of the Grunenthal  Agreement,  Synaptic  agreed to make
available to Grunenthal  for evaluation all receptors (to the extent not already
licensed  exclusively  to a third  party)  cloned by Synaptic for which there is
evidence of a role in the  mediation of pain or whose  function has not yet been
elucidated  but which were first cloned by Synaptic  from tissues known to be so
implicated. Synaptic further agreed not to pursue such receptors,  independently
or with any third party,  as targets of potential  drugs for the  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.

         The terms of the  Grunenthal  Agreement  provide that 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.

         Kissei Collaboration

         In  January  2000,  the  Company  and  Kissei  entered  into the Kissei
Agreement  pursuant  to which they agreed to  collaborate  in an effort in which
Synaptic will conduct both a genomics and functional  genomics program on behalf
of Kissei in an attempt to clone genes that code for G protein-coupled receptors
from tissues  selected by Kissei and to identify the ligands for such receptors,
and Kissei will  attempt to  discover  and  develop  compounds  that act at such
receptors. The term of the collaboration is three years.

         Under  the terms of the  Kissei  Agreement,  Kissei  will  provide  the
Company  with  funding  to support  Synaptic's  research.  Kissei  will have the
opportunity to select up to a certain number of receptors that are discovered by
Synaptic  during the  course of the  collaboration  and to receive an  exclusive
worldwide  license to use the  selected  receptors to develop,  manufacture  and
market drugs that act through such receptors. Kissei's license will convert to a
nonexclusive  license in all countries except Japan following its achievement of
certain

                                       14

<PAGE>



milestones.  In consideration  for this license,  Kissei will be required to pay
the Company license fees,  milestone  payments and royalty payments on each drug
that reaches the marketplace.

         Kissei has the right to  terminate  the Kissei  Agreement  effective in
January 2001, 2002 or 2003 upon at least three months' prior written notice.  In
the event of any such  termination,  Kissei  will not be required to provide the
Company  with  any  research  funding  that  has  not  come  due  prior  to such
termination.


Other Licensees' Programs

         In addition to the licenses  granted in  connection  with the Company's
ongoing  collaborative  arrangements,  licenses  to  certain  of  the  Company's
technology  and patent  rights have been  granted to three other  pharmaceutical
companies  pursuant to: (A) the Research,  Option and License Agreement dated as
of January 25, 1991,  as amended (the "Lilly  Agreement"),  with Lilly;  (B) 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"),  with  Novartis;  and (C) the
Option and License Agreement dated as of March 2, 1998 (the "Glaxo  Agreement"),
with Glaxo Group Limited ("Glaxo"). The Lilly and Novartis licenses were granted
concurrently  with the  establishment by Synaptic of collaborative  arrangements
with  such   companies.   While  the  Novartis   collaboration   and  the  Lilly
collaboration ended in August 1998 and July 1999,  respectively,  the associated
licenses continue for the respective periods provided in the Novartis Agreements
and the Lilly Agreement.

         Lilly Programs

         Serotonin is one of the major neurotransmitters 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,  many of the  serotonergic  drugs
currently  available were designed without the use of cloned serotonin  receptor
subtype genes and some of these drugs have unacceptable 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 nonsubtype-selective
drugs.  As a  consequence,  a  nonsubtype-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 of
seven.  The Company has been issued 32 patents  relating to these  receptors and
related drug discovery systems. Additional patent applications relating to these
genes have been filed in the United States and in other countries.

         In 1991,  the  Company  and  Lilly  began a  collaboration  to  exploit
Synaptic's  serotonin  receptor  technology.  The basis of the collaboration was
Synaptic's  discovery  of  several  serotonin  receptors  and  its  creation  of
serotonin  receptor drug discovery  systems,  and Lilly's expertise in serotonin
pharmacology, chemistry and drug development.

                                       15

<PAGE>



         During the course of the collaboration, one of the serotonin receptors,
the  serotonin  1F  receptor,  was  validated  as a target for the  treatment of
migraine headaches.  The use of the serotonin 1F receptor as a target allows for
the design of compounds  that are  efficacious  in the treatment of migraine and
that, in addition,  do not carry the cardiovascular side effects associated with
currently  available   serotonin-based  drugs  for  the  treatment  of  migraine
headache.

         In addition to migraine headache, there is a wide variety of additional
applications for  serotonin-based  drugs,  including potential therapies for the
treatment of obesity and novel  receptor-based  therapies  for the  treatment of
depression. Although many years of research have been committed to the serotonin
receptor system by dozens of research teams around the world, the  understanding
of the  biological  role of most of the  serotonin  receptors is still in a very
early  stage.  Considerable  work must be done in order to validate  many of the
serotonin receptors as drug targets.

         Lilly  recently  informed  the  Company  that  it  is  conducting  drug
discovery  programs  focused  on a number of  serotonin  receptor  subtypes  and
therapeutic applications,  including migraine headache,  obesity and depression,
and that receptor subtype-selective  compounds have been identified for a number
of Lilly's serotonin programs.

         Under the terms of the Lilly  Agreement,  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 drugs that affect
serotonergic  transmission.  The Company retained 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 for cross-reactivity  screening of
compounds  in  nonserotonin  drug  discovery  programs.  Lilly was also  granted
certain  exclusive  rights  under  several of the  Company's  patents and patent
applications.

         The terms of the Lilly Agreement  provide that Lilly is responsible for
all development,  manufacturing, marketing and sales of drugs resulting from the
use of Synaptic's technology. The Company will be 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's
milestone and royalty payment  obligations  under the Lilly Agreement  continue,
notwithstanding the expiration of the term of the collaboration.

         Novartis Programs

         From August 1994 to August 1998, the Company and Novartis  engaged in a
collaboration  directed  primarily to the  identification and development of NPY
drugs  for  the  treatment  of  obesity  and  eating  disorders.  As part of its
collaboration with the Company, Novartis received an exclusive worldwide license
to use the Company's NPY receptor subtype drug discovery systems for the limited
purpose of developing and  commercializing Y5 antagonists,  as well as any other
NPY drugs,  for the  treatment  of  obesity  and  eating  disorders,  as well as
cardiovascular  disorders.  Novartis also  received  rights under several of the
Company's  patents  and patent  applications.  The  license  and  rights  remain
exclusive until August 2001, following which time they become nonexclusive.

         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

                                       16

<PAGE>



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  correlates  with the ability of these  peptides to stimulate
feeding in animals. As part of its collaboration with the Company, Novartis then
showed in proof of concept  studies that several  peptides that activated the Y5
receptor  preferentially over other known NPY receptors increased food intake in
rats.  Additional  proof of concept studies by Synaptic and Novartis showed that
small molecules that selectively block the Y5 receptor significantly reduce food
intake in rats and reduce body weight after chronic  administration.  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's  collaboration  with
Novartis  focused  on  discovering  and  developing  a potent and  selective  Y5
antagonist for the treatment of obesity.  Novartis recently informed the Company
that it was  continuing its efforts to identify a Y5 antagonist as a development
candidate for this obesity program.

         In  consideration  for  the  licenses  granted  to it  pursuant  to the
Novartis  Agreements,  from August 1994 to August  1998,  Novartis  provided the
Company with funding to support a specified  number of the Company's  scientists
dedicated  to work on the  collaboration.  Novartis  will  be  required  to make
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.

         Glaxo Agreement

         In March 1998,  the Company and Glaxo entered into the Glaxo  Agreement
pursuant to which the Company  granted  Glaxo 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.  Synaptic  will be 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
at that time.


Terminated Agreements

         The Company had also granted  licenses to certain of its technology and
patent  rights  to two  other  pharmaceutical  companies  pursuant  to  (i)  the
Collaborative  Research  and  License  Agreement  dated as of July 28, 1997 (the
"Warner-Lambert  Agreement"),   with  Warner-Lambert;   and  (ii)  the  Research
Collaboration  and License  Agreement  dated as of November 30, 1993, as amended
(the "Merck  Agreement"),  with Merck. The Warner-Lambert  license terminated in
May 1999  upon the  termination  of the  collaboration  and the  Merck  licenses
terminated in March 2000 upon the termination of the Merck Agreement.


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 and/or  out-licensing its technology to them
on a noncollaborative  basis. At present,  the Company is in the early stages of
discussing

                                       17

<PAGE>



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.


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  February  18,  2000,  the  Company had been issued a total of 50
patents relating to the genes that code for various G protein-coupled receptors.
These patents expire at various times from 2009 to 2016. In addition, as of that
date  additional  patent  applications  relating to the Company's  receptor gene
discoveries had been filed in the United States and 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. As of February 18, 2000,  the Company had
been issued a total of nine patents  relating to the same subject  matter in the
United States and in other countries. These patents expire at various times from
2012 to 2016.  Additional  related or corresponding  patent  applications of the
Company are on file in the United States and in other countries.

         In August 1999,  the Company  received a  functional  use patent in the
United  States  covering  the use of  selective  serotonin  1D agonists  for the
treatment of migraine headache.  Additional patent applications  relating to the
same subject matter 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 February 18, 2000, the Company had been issued eight patents
relating to six of these  transporter  discoveries  in the United  States and in
another  country.  Additional  related or corresponding  applications  have been
filed by the Company in the United States and in another country. The Company is
no longer actively working on its transporter  program.  However, the Company is
seeking to license its transporter technology 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 expects to file additional  patent  applications
in the future.

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

         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

                                       18

<PAGE>



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.  In 1998,  one of the
Company's patent  applications on file outside the United States was the subject
of  an  opposition  filed  by a  pharmaceutical  company.  During  the  year,  a
determination  favorable  to the Company was made in which most of the claims in
the Company's patent application were found to be patentable.  In November 1998,
the Company  sought to file an amendment to the patent  application  pursuant to
which  certain  of the  claims  that were  found not to be  patentable  would be
modified.  This  amendment  was approved by the patent office in such country in
February 1999 and the patent,  with the modified claims,  issued in August 1999.
In addition,  as of February 18, 2000, one of the Company's patent  applications
on file in the United  States  was the  subject  of an  interference  proceeding
involving  an issued  patent of a third  party,  and the  Company was 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. There
can be no  assurance  that the  outcome of the  interference  proceeding  or the
anticipated  interference  proceeding  will be favorable to the Company.  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  ultimate  outcome of the  interference  proceedings  is 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. Many of these groups are employing recent technological  advances in gene
sequencing  technology to rapidly identify partial  sequences of expressed genes
("expressed  sequence  tags" or "ESTs") and  complete  sequences  of genes whose
functions  have  not  been  characterized.   Some  of  these  groups,  including
Washington   University  (with  funding   provided  by  Merck),   are  currently
identifying ESTs

                                       19

<PAGE>



through partial sequencing and depositing these sequences into public databases,
while others are filing patent  applications  covering  their  discoveries.  The
public availability of EST and other sequence  information prior to the time the
Company applies for patent  protection on corresponding  gene discoveries  could
adversely affect the Company's  ability to obtain patent protection with respect
to such discoveries.  While the Company routinely  conducts searches of publicly
available  databases to determine  whether other parties have previously  cloned
ESTs or full-length  genes discovered by the Company,  it is not always possible
to  determine  whether the third  party or the  Company was the first  inventor.
Patent  applications  covering ESTs and full-length genes filed by third parties
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.  To the
extent any patents issue to other parties on such partial or full-length  genes,
the risk increases that the Company will not be able to obtain patents  covering
certain of its  discoveries,  that the Company's  existing or future patents and
patent  applications  may  become  the  subject of  interference  or  opposition
proceedings,  that the  Company may not be able to use such  discoveries  and/or
that the  potential  products and  processes of the Company or its licensees may
give rise to claims of patent infringement.

         The commercial  success of the Company depends in part 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,  ESTs of novel GPCRs and/or  compounds that interact
with GPCRs.  Patents  issued to others may  preclude  the Company  from using or
licensing certain of its receptor discoveries or may preclude the Company or its
collaborative  partners and other 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  nonexclusive 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 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' or licensees' 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

                                       20

<PAGE>



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,  including government-financed entities, 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  receptor  subtypes,  including receptor subtypes with which the
Company is working.  In addition,  there are a number of companies  and academic
and other research institutions engaged in gene sequencing, gene discovery, gene
expression  analysis and other  genomic  service  businesses.  There is a finite
number  of genes in the  human  genome,  and many  competitors  are  seeking  to
identify,  sequence and determine the  biological  function of a large number of
genes in the shortest time  possible in order to obtain a  proprietary  position
with respect to the largest number of novel genes discovered.  In addition,  the
Company is aware that other companies and research  institutions  have developed
genomic  databases  and are  marketing,  or have  announced  their  intention to
market,  their data to  competitors  of the  Company.  The Company  expects that
additional competitors will attempt to establish gene sequence,  gene expression
or other genomic databases in the future.

         In addition,  competitors may discover and establish  patent  positions
with respect to the same gene  sequences  discovered  by the  Company.  Further,
certain entities engaged in gene sequencing have made and are continuing to make
the  results  of their  sequencing  efforts  publicly  available.  These  patent
positions or the public  availability of gene sequences  comprising  substantial
portions of the human genome could decrease the potential value of the Company's
discoveries and adversely affect the Company's  ability to realize  royalties or
other revenue from  commercialization  of this genetic  information and products
based upon this genetic information.

         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  present  and  future  collaborative  partners  or other  licensees.  The
genomics  industry is  characterized  by  extensive  research  efforts and rapid
technological  progress.  To remain  competitive  in its genomics  efforts,  the
Company will be required to continue to expand its  databases and to enhance the
functionality of its bioinformatics and database software.  New developments are
expected to continue and discoveries by others may render the Company's services
and potential products noncompetitive.


                                       21

<PAGE>



         The Company  also  expects to encounter  significant  competition  with
respect to the drugs that it and its collaborative  partners and other 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  protection for certain of
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
other licensees or that would render  technology or drugs of the Company and its
collaborators  and other  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 other licensees,  thereby rendering the Company's and
its  collaborative  partners'  and  other  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 other  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

                                       22

<PAGE>



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 things,  ethical  factors,  the safety of human  subjects and the possible
liability of the  institution.  Compounds  must be  formulated  according to the
FDA's Good Manufacturing Practices ("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 may seek to assess the efficacy of the drug for specific
targeted  indications,  to determine  dose  tolerance and the optimal dose range
and/or 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 package
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 other  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 and other licensees 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

                                       23

<PAGE>



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  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 other licensees,  impose costly procedures upon the Company's or its
collaborative partners' or other licensees' activities, diminish any competitive
advantages that the Company or its collaborative partners or other 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 other
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 February 18, 2000, the Company had 94 full-time employees,  29 of
whom hold Ph.D. or M.D. degrees. Of the Company's full-time  employees,  76 were
engaged  directly  in  scientific  research  and 18 were  engaged in general and
administrative   functions.   The  Company's   scientific   staff  members  have
diversified

                                       24

<PAGE>



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.

         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 total square footage currently leased
by the  Company is 83,843.  The lease will  expire on  December  31,  2015.  The
Company is currently  converting a portion of its space into additional research
laboratories and may renovate other portions of its space in 2000 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.




                                       25

<PAGE>



                                     Part II


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

         The Common Stock of the Company trades on The Nasdaq Stock Market under
the symbol SNAP. As of February 18, 2000, there were approximately 2,150 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  periods
indicated below.


                                 1999 Fiscal Year

                                     High              Low
                                     ----              ----
         1st Quarter 1999            19 1/4            6 1/16

         2nd Quarter 1999            7 1/2             4 1/2

         3rd Quarter 1999            9                 4 1/2

         4th Quarter 1999            7 1/4             4



                                 1998 Fiscal Year

                                     High              Low
                                     ----              ----
         1st Quarter 1998            14                10 7/16

         2nd Quarter 1998            15 1/8            11 1/8

         3rd Quarter 1998            15 1/8            9 3/4

         4th Quarter 1998            16 1/8            12 5/8



                                       26

<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)


                          1999       1998        1997        1996       1995
- -------------------------------------------------------------------------------
Total revenues         $  1,855   $   9,352   $ 10,307   $   9,481   $  7,977
Total expenses         $ 19,652   $  19,576   $ 17,853   $  14,319   $ 12,078
Other income, net      $  2,676   $   3,731   $  2,200   $   2,205   $    734
Net loss               $(15,121)  $  (6,493)  $ (5,346)  $  (2,633)  $ (3,367)
Basic and diluted net
   loss per share      $  (1.41)  $   (0.61)  $  (0.66)  $   (0.35)  $  (4.76)
Total assets           $ 48,750   $  64,696   $ 69,402   $  40,355   $ 40,913
Long term debt               --          --         --          --   $    107
Accumulated deficit    $(50,930)  $(35,809)   $(29,316)  $ (23,970)  $(21,337)
Stockholders' equity   $ 47,106   $  62,676   $ 67,704   $  39,040   $ 38,668
- -------------------------------------------------------------------------------



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

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  in its genomics  program to discover and
clone the genes that code for human receptors. The Company and its licensees are
also utilizing this technology in functional  genomics  programs to discover the
function  of  these  receptors  in the  body  and  thus  specific  physiological
disorders with which they may be  associated.  The Company and its licensees are
in turn  utilizing  the  cloned  receptor  genes to  design  compounds  that can
potentially be developed as drugs for treating these disorders.

         The  Company  is   currently   collaborating   with   Grunenthal   GmbH
("Grunenthal").  Concurrently  with  the  establishment  of  this  collaborative
arrangement,  the  Company  granted a license to certain of its  technology  and
patent rights to Grunenthal.

         In  addition  to its  ongoing  collaborative  arrangement,  three other
pharmaceutical  companies,  Eli Lilly and Company ("Lilly"),  Novartis Pharma AG
("Novartis"), and Glaxo Group Limited ("Glaxo"), have licenses to certain of the
Company's  technology  and patent rights.  The Lilly and Novartis  licenses were
granted  concurrently with the establishment of collaborative  arrangements with
such companies.  While the Lilly  collaboration  and the Novartis  collaboration
ended in July  1999 and  August  1998,  respectively,  the  associated  licenses
continue  for  the  respective   periods  provided  in  these  agreements.   For
convenience of reference, the

                                       27

<PAGE>



agreements  pursuant to which the licenses referred to in this paragraph and the
preceding paragraph were granted are collectively  referred to in this Item 7 as
the "License Agreements."

         Since  inception,  the Company has  financed its  operations  primarily
through  the sale of its stock,  through  contract  and  license  revenue  under
certain of its License Agreements, and through interest income and capital gains
resulting  from its  investments.  The Company also has received  revenues  from
government grants under the Small Business  Innovative Research ("SBIR") program
of the National Institutes of Health.

         Under the  License  Agreements,  the Company may receive one or more of
the following  types of revenue:  contract  revenue,  license  revenue,  royalty
revenue or revenue from the sales of drugs.  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  collaboration  to
which it relates and is based upon predetermined funding requirements.  Research
and  development  milestone  payment  revenue  is  recognized  when the  related
research or  development  milestone  is  achieved.  License  revenue  represents
non-refundable  payments for a license to one or more of the  Company's  patents
and/or a  license  to the  Company's  technology.  Non-refundable  payments  for
licenses were  recognized as they were received or when they became  guaranteed.
Under each of the License Agreements (other than the Grunenthal Agreement),  the
Company is entitled to receive  royalty  payments  based upon the sales of drugs
that may be developed  using the Company's  technology or that may be covered by
the  Company's  patents.  Under  the  Grunenthal  Agreement,   the  Company  has
development and marketing  rights in certain  territories with respect to drugs,
if  any,  that  are  jointly  identified  as  part  of  the  collaboration  with
Grunenthal.  Accordingly,  the  Company may  receive  revenue  from sales in its
territories (as defined) of such drugs if it markets them  independently  or the
Company may receive  royalty  payments if it licenses its marketing  rights to a
third party.  To date, the Company has not received  either  royalty  revenue or
revenue  from the sales of drugs and the Company does not expect to receive such
revenues for a number of years, if at all.

         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  $50,930,000  at December 31, 1999.  The Company
expects to continue to incur operating  losses for a number of years and may not
become profitable,  unless and until it receives royalty revenue or revenue from
sales  of drugs  that may be  developed  with the use of its  technology  or its
patent rights.


Results of Operations

         Comparison of Fiscal Years Ended December 31, 1999, 1998 and 1997

         Revenues. The Company recognized revenue of $1,855,000,  $9,352,000 and
$10,307,000  for the  fiscal  years of 1999,  1998 and 1997,  respectively.  The
decrease  of  $7,497,000  from 1999 to 1998 was  attributable  primarily  to the
following:  a net decrease in contract revenue of $5,347,000  resulting from the
contractual termination of three of the Company's collaborative arrangements and
the receipt in 1998 of $2,000,000  of  non-recurring  license  revenue under the
Glaxo Agreement.

         The decrease of $955,000 from 1998 to 1997 was  attributable  primarily
to the  following:  a net decrease in contract  revenue of $2,583,000  resulting
primarily from the contractual  termination of the Novartis Agreements on August
3, 1998 as well as the reduction in full-time equivalent scientists being funded
under

                                       28

<PAGE>



another of the License  Agreements  and a decrease in grant revenue of $372,000,
which were offset by the receipt in 1998 of $2,000,000 of non-recurring  license
revenue under the Glaxo Agreement.

         Research and Development  Expenses.  The Company incurred  research and
development expenses of $14,592,000,  $15,274,000 and $13,781,000 for the fiscal
years of 1999,  1998 and 1997,  respectively.  The decrease of $682,000,  or 4%,
from 1998 to 1999 was attributable primarily to: a reduction in compensation and
fringe  benefit  expenses  due  to a  net  decrease  in  headcount  as  well  as
corresponding reductions in travel and supply costs, all of which were partially
offset by  increased  rent  expense for  facilities  resulting  from  previously
contracted increases in square footage.

         The increase of $1,493,000,  or 11%, from 1997 to 1998 was attributable
primarily to increases in  compensation  and fringe benefit  expenses,  facility
related costs, and research supply costs.

         General and Administrative  Expenses.  The Company incurred general and
administrative expenses of $5,060,000,  $4,302,000 and $4,072,000 for the fiscal
years of 1999, 1998 and 1997,  respectively.  The increase of $758,000,  or 18%,
from 1998 to 1999 was  attributable  primarily  to  increases  in: rent  expense
resulting  from  previously   contracted   increases  in  square  footage;   and
compensation and fringe benefit expenses.

         The  increase of  $230,000,  or 6%, from 1997 to 1998 was  attributable
primarily to an increase in compensation and fringe benefit expenses.

         Other Income,  Net. The Company  recorded  other income of  $2,676,000,
$3,731,000  and  $2,200,000  for the  fiscal  years  of  1999,  1998  and  1997,
respectively.  The decrease of $1,055,000  from 1998 to 1999 in other income was
primarily due to lower interest  income as a result of lower average cash,  cash
equivalent and marketable securities balances during 1999.

         The  increase  of  $1,531,000  from  1997 to 1998 in other  income  was
primarily due to higher interest income as a result of higher average cash, cash
equivalent and marketable  securities  balances  during 1998 which resulted from
the receipt of net proceeds from a public offering of its common stock completed
in November 1997.

         Net Loss and  Basic  and  Diluted  Net  Loss  Per  Share.  The net loss
incurred by the Company was $15,121,000 ($1.41 per share), $6,493,000 ($0.61 per
share) and $5,346,000  ($0.66 per share) for the fiscal years of 1999,  1998 and
1997,  respectively.  The  increase  in net loss per share of $0.80 from 1998 to
1999  resulted  primarily  from the  recognition  of lower total  revenue and of
higher total expenses.

         The decrease in net loss per share of $0.05 from 1997 to 1998  resulted
primarily from higher average outstanding shares during 1998 partially offset by
the  recognition of higher total expenses.  The increase in average  outstanding
shares  primarily  relates to the sale of 2,875,000  shares of common stock in a
public  offering  in the  fourth  quarter of 1997 as well as the sale of 137,648
shares of common  stock  pursuant to the  exercise of stock  warrants in January
1998.

         Operating Trends.  Revenues may vary from period to period depending on
numerous  factors  including  the timing of  revenue  earned  under the  License
Agreements  and revenue  that may be earned under  future  collaborative  and/or
license agreements. On January 24, 2000, the Company entered into a research and
licensing  agreement  with Kissei  Pharmaceutical  Co.,  Ltd.  The Company  will
recognize  revenue  under this  agreement  during 2000 and expects to  recognize
revenue under this agreement during 2001 and 2002. Under

                                       29

<PAGE>



the terms of certain of the License  Agreements,  revenues may be  recognized if
certain milestones are achieved.  Management continues to assess the opportunity
for  obtaining   additional  funding  under  new  collaborative  and/or  license
agreements  as well as obtaining  financing  through  equity  transactions.  The
Company  continues to monitor its spending  level in order to insure that it has
enough cash to last through the year 2001.

         Other  income,  net is expected to decline in 2000 and 2001 as existing
funds are utilized to fund the Company's operations.

         Property  and  equipment  spending  may  vary  from  period  to  period
depending on numerous factors  including:  the number of collaborations in which
the Company is involved at any given time;  replacement due to obsolescence  and
replacement  due to normal  wear.  Consequently,  equipment  spending in 2000 is
expected to increase from that of 1999.

         At December 31, 1999, the Company held  marketable  securities  with an
estimated  fair  value of  $35,907,000.  The  Company's  primary  interest  rate
exposure results from changes in short-term interest rates. The Company does not
purchase financial instruments for trading or speculative  purposes.  All of the
marketable  securities held by the Company are classified as  available-for-sale
securities. The following table provides information about marketable securities
held by the Company at December 31, 1999:
                                                             Estimated
    Principal Amount and Weighted Average Stated Rate           Fair
                by Expected Maturity                           Value
- ----------------------------------------------------         ---------
(000's)      2000    2001     2002     2003   Total           (000's)
- ----------------------------------------------------         ---------
Principal   $6,487  $20,440  $2,500  $6,500  $35,927         $35,907

Weighted
 Average
 Stated
 Rates       6.39%   7.91%   6.50%    5.77%    7.15%             --
- ----------------------------------------------------        ---------

         The  stated  rates of  interest  expressed  in the above  table may not
approximate the actual yield of the securities which the Company currently holds
since the Company has purchased some of its marketable  securities at other than
face value. Additionally,  some of the securities represented in the above table
may be called or redeemed,  at the option of the issuer, prior to their expected
due dates.  If such early  redemptions  occur,  the  Company  may  reinvest  the
proceeds  realized on such calls or  redemptions in marketable  securities  with
stated  rates of  interest  or  yields  that are  lower  than  those of  current
holdings, affecting both future cash interest streams and future earnings.

         In addition to investments in marketable securities, the Company places
some of its cash in money market  funds in order to keep cash  available to fund
operations  and to hold  cash  pending  investments  in  marketable  securities.
Fluctuations  in short  term  interest  rates  will  affect  the yield on monies
invested in such money market  funds.  Such  fluctuations  can have an impact on
future cash interest streams and future earnings of the Company,  but the impact
of such fluctuations are not expected to be material.

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

         Management  believes  that  it has  remedied  all  of  its  information
technology and non-information technology systems that may have been affected by
the year 2000  issue.  The  Company did not  experience  any  problems or issues
arising from the date change from 1999 to 2000.  Through 1999, the Company spent
less

                                       30

<PAGE>



than  $50,000 to remedy  systems  that may have been  affected  by the year 2000
issue and does not expect any future expenses.


Liquidity and Capital Resources

         At December 31, 1999 and December 31, 1998,  cash, cash equivalents and
marketable securities aggregated $42,143,000 and $56,378,000, respectively. This
decrease  was a  result  of the  utilization  of  these  resources  to fund  the
Company's operations.

         To date, the Company has met its cash requirements  through the sale of
its stock, through contract and license revenue, through SBIR grants and through
interest  income  and  gains  resulting  from its  investments.  If the  current
biotechnology  financing  environment  remains  unfavorable,  raising additional
capital may be difficult.

         At  December  31,  1999,  the  Company had  invested  an  aggregate  of
$11,301,000 in property and equipment.

         The Company leases  laboratory and office facilities under an agreement
expiring on December 31, 2015.  The minimum  annual  payment  under the lease is
currently $1,575,000.  The lease provides for fixed escalations in rent payments
in the years 2005 and 2010.

         At  December  31,  1999,  the  Company had  $42,143,000  in cash,  cash
equivalents and marketable securities.  The Company currently intends to utilize
these funds  primarily to conduct certain of its research  programs,  for patent
related  expenditures,   for  general  corporate  purposes,  to  make  leasehold
improvements  to its  facilities  and to purchase  property and  equipment.  The
Company expects to continue to incur operating losses for a number of years. The
Company  believes  that its cash on hand and cash  that it  expects  to  receive
through  interest  payments on its  investments,  will be sufficient to fund its
operations,  as well as the Company's share of certain  development  costs under
the Grunenthal Agreement, through the year 2001.

         As  of  December  31,  1999,   the  Company  had  net  operating   loss
carryforwards of approximately  $45,000,000 for Federal income tax purposes that
will expire principally in the years 2002 through 2019. In addition, the Company
had research and  development  credit  carryforwards  of  $1,610,000  which will
expire  principally in 2002 through 2018. 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.


Recent Accounting Pronouncements

         In June 1998, the Financial Accounting Standards Board issued Statement
of Financial  Accounting  Standards No. 133,  "Accounting  for  Derivatives  and
Hedging  Activities"  ("SFAS 133"),  which establishes  accounting and reporting
standards for derivative  instruments,  including certain derivative instruments
embedded in other contracts  (collectively  referred to as derivatives)  and for
hedging  activities.  SFAS 133, as amended, is effective for all fiscal quarters
of fiscal years beginning after June 15, 2000. As the Company does

                                       31

<PAGE>



not currently  intend to engage in derivatives or in hedging  transactions,  the
Company does not anticipate  any effect on its results of operations,  financial
position or cash flows upon the adoption of SFAS 133.


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,  neither  the  Company  nor any of its
collaborative partners or other licensees has completed the development of drugs
designed  with the use of the  Company's  technology  and the  Company  does not
expect that any drugs resulting from its or its collaborative partners' or other
licensees' research and development efforts will be commercially available for a
number of years,  if at all.  All  compounds  discovered  by the Company and its
collaborative  partners and other 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,  but are not
limited  to,  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 Grunenthal,  Kissei,  Lilly,  Novartis or
Glaxo,  or any future  collaborative  partner or other  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 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

                                       32

<PAGE>



efficacy,  would slow or prevent product  development efforts of the Company and
its  collaborative  partners  and other  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 Company's agreements with Kissei, Lilly and
Novartis,   the  Company's   collaborative   partners  and  licensees  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 other licensees. The amount and
timing of resources dedicated by the Company's  collaborative partners and other
licensees 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  other  licensees,  that  one or more of the
Company's   collaborative   partners  or  other   licensees   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  other  licensees
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
related  research  programs 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, 1999,  the  Company's  accumulated
deficit was $50,930,000. 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 research  funding under
its  collaborative  arrangements  diminish.  As of December 31,  1999,  the only
revenues generated by the Company had resulted from payments under collaborative
and license  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
Novartis Agreements expired in 1998, research payments under the Merck Agreement
expired in  February  1999,  and  research  payments  under the Lilly  Agreement
expired in July 1999. The Company anticipates that there will

                                       33

<PAGE>



initially be little, if any,  biological  knowledge regarding many of its future
gene discoveries and, as a result, it may have fewer opportunities to enter into
collaborative  arrangements  focused on such  discoveries.  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  other  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 or its
collaborative  partners'  or other  licensees'  drug  candidates,  the timing of
regulatory approvals, if any, technological  advances,  determinations as to the
commercial  potential of its or its collaborative  partners' or other licensees'
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  or licensing  arrangements  with others and on 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
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.

         No assurance can be given that the Company's  existing cash on hand and
marketable  securities  and funds it will receive  under its  collaborative  and
license  agreements,  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.



                                       34

<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 other
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 or other  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 other 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 other 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 other 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 and other licensees 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 and
other licensees 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, any preclinical or clinical testing schedule of the Company 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.


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

                                       35

<PAGE>



product it may  develop,  the Company  would 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  would 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,  scientific,
software and bioinformatics 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.  Failure to attract and retain such
personnel could have a material adverse effect on the Company.


External Environment

         Over the past several years, there has been a significant  reduction in
the number of investors who are willing to commit  capital to the  biotechnology
industry.  With over 300 public  biotechnology  companies and over 1,000 private
biotechnology  companies,  the lack of capital is severely impairing the ability
of many of these  companies  to carry out  their  research.  Additionally,  many
pharmaceutical  companies  are now  routinely  performing  many of the  types of
research and services that have  historically  been  performed by  biotechnology
companies. As a consequence,  many pharmaceutical  companies are less interested
than in the past both in engaging in collaborations with biotechnology companies
in a number  of areas and in  providing  them with  research  funding  and other
sources of revenue.

         Over time, the Company could be materially adversely affected by a lack
of available capital and/or a lack of interest on the part of the pharmaceutical
industry in its  services or products.  This  unfavorable  external  environment
could  result in the  Company's  inability  to complete  certain of its research
projects  and/or  in the need for the  Company  to  downsize  until it begins to
receive royalty income pursuant to outstanding licensing arrangements.


Item 7A.  Quantitative and Qualitative Disclosures About Market Risk

         Quantitative  and  qualitative  disclosures  about  market  risk (i.e.,
interest rate risk) are included in Item 7 of this Report.

                                       36

<PAGE>



Item 8.           Financial Statements



                       SYNAPTIC PHARMACEUTICAL CORPORATION

                          INDEX TO FINANCIAL STATEMENTS





                                                                            Page
                                                                            ----
Report of Independent Auditors...............................................38

Balance Sheets at December 31, 1999 and 1998.................................39

Statements of Operations and Comprehensive Income (Loss) for the years ended
 December 31, 1999, 1998 and 1997............................................40

Statements of Stockholders' Equity for the years ended
 December 31, 1999, 1998 and 1997............................................41

Statements of Cash Flows for the years ended
 December 31, 1999, 1998 and 1997............................................43

Notes to Financial Statements................................................44







                                       37

<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, 1999 and 1998,  and the related
statements of operations and comprehensive  income (loss),  stockholders' equity
and cash flows for each of the three  years in the  period  ended  December  31,
1999.  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 auditing standards generally
accepted in the United States. 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, 1999 and 1998, and the results of its
operations  and its cash flows for each of the three  years in the period  ended
December 31, 1999, in conformity with accounting  principles generally  accepted
in the United States.



                                            ERNST & YOUNG LLP


Hackensack, New Jersey
February 4, 2000


                                       38

<PAGE>



                       SYNAPTIC PHARMACEUTICAL CORPORATION

                                 BALANCE SHEETS

(in thousands, except share and per share information)


December 31, 1999 and 1998

Assets                                                   1999            1998
- -------------------------------------------------------------------------------
Current assets:
    Cash and cash equivalents                          $  6,236     $  16,590
    Restricted cash                                          --           600
    Marketable securities--current maturities             6,471         7,133
    Other current assets                                    847         1,064
- -------------------------------------------------------------------------------
        Total current assets                             13,554        25,387
Property and equipment, net                               5,186         5,733
Marketable securities                                    29,436        32,655
Patent and patent application costs,
 net of accumulated amortization
    (1999--$1,801; 1998--$1,454)                            574           921
- -------------------------------------------------------------------------------
                                                       $ 48,750     $  64,696
===============================================================================


Liabilities and Stockholders' Equity
- -------------------------------------------------------------------------------
 Current liabilities:
    Accounts payable                                  $     486     $     966
    Accrued liabilities                                     525           645
    Accrued compensation                                    386           326
    Deferred revenue                                         --            83
- -------------------------------------------------------------------------------
        Total current liabilities                         1,397         2,020

Deferred rent obligation                                    247            --

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--10,764,661 shares
     in 1999 and 10,711,374 shares in 1998                  108           107
    Additional paid-in capital                           98,719        98,516
    Accumulated other comprehensive income--net
     unrealized  losses on securities                      (791)          (77)
    Deferred compensation                                    --           (61)
    Accumulated deficit                                (50,930)       (35,809)
- -------------------------------------------------------------------------------
           Total stockholders' equity                    47,106        62,676
- -------------------------------------------------------------------------------
                                                      $  48,750     $  64,696
===============================================================================


                       See notes to financial statements.

                                       39

<PAGE>



                       SYNAPTIC PHARMACEUTICAL CORPORATION

            STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS)


(in thousands, except share and per share information)


For the Years Ended December 31, 1999, 1998 and 1997


                                          1999         1998       1997
- -------------------------------------------------------------------------

Revenues:
    Contract revenue                 $   1,855      $  7,202   $   9,785
    License revenue                         --         2,000          --
    Grant revenue                           --           150         522
- -------------------------------------------------------------------------
        Total revenues                   1,855         9,352      10,307

Expenses:
    Research and development            14,592        15,274      13,781
    General and administrative           5,060         4,302       4,072
- -------------------------------------------------------------------------
        Total expenses                  19,652        19,576      17,853
- -------------------------------------------------------------------------
Loss from operations                  (17,797)       (10,224)     (7,546)

Other income, net:
    Interest income                      2,674         3,603       2,205
    Interest expense                        --            --          (5)
    Gain on sale of securities               2           128          --
- -------------------------------------------------------------------------
Other income, net                        2,676         3,731       2,200
- -------------------------------------------------------------------------
Net loss                             $ (15,121)     $ (6,493)    $(5,346)
========================================================================


Comprehensive loss:

Net loss                             $ (15,121)     $ (6,493)    $(5,346)

    Unrealized (losses) gains
     arising during period               (702)           (82)         27

    Less: reclassification
     adjustment for gains
      included in net income              (12)           (21)         --
- ------------------------------------------------------------------------
Comprehensive loss                  $ (15,835)      $ (6,596)    $(5,319)
========================================================================


Basic and diluted net loss
 per share                         $   (1.41)       $  (0.61)    $ (0.66)
========================================================================
Shares used in computation of
 net loss per share               10,742,296      10,684,892   8,129,260
========================================================================


                       See notes to financial statements.

                                       40

<PAGE>



                       SYNAPTIC PHARMACEUTICAL CORPORATION

                       STATEMENTS OF STOCKHOLDERS' EQUITY


(in thousands, except share information)
<TABLE>

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

                                                                  Net
                                                               Unrealized
                                                                 Gains                                         Total
                                                    Additional  (Losses)   Deferred       Accumu-               Stock-
                                   Common Stock      Paid-In      on        Compen-        lated     Treasury   holders'
                                 Shares   Amount     Capital   Securities    sation       Deficit     Stock      Equity
                                 ------   ------     -------   ----------    ------       -------     -----   ------------
Balance at January   1, 1997   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 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
Purchase of 375 shares of
 Treasury Stock at cost              --     --           --          --         --             --       (1)           (1)
Forfeiture of Deferred
 Compensation related to
 Stock Incentive Plan                --     --          (20)         --         20             --       --            --
Amortization of Deferred
 Compensation                        --     --           --          --         79             --       --            79
Issuance of 47,516, shares
 of common stock pursuant        47,141      1          127          --         --             --        1           129
 to exercise of stock options
Issuance of 137,648 shares of
 common stock pursuant to
 exercise of stock warrants     137,648      1        1,307          --         --             --       --         1,308
Adjustment to reflect net
 unrealized gain on
 securities                          --     --          --        (103)         --             --       --          (103)
Adjustment to reflect
 recognition of short-swing
 profits realized on sale of
 stock by stockholder                --     --          53          --          --             --       --            53
Net loss for the year ended
 December 31, 1998                   --     --          --          --          --         (6,493)      --        (6,493)
                             ----------  -------   --------  ----------  ---------   ------------    -----  ------------
Balance at December 31, 1998 10,711,374  $  107    $ 98,516  $     (77)   $   (61)    $   (35,809)   $  --  $     62,676
                             ==========  =======   ========  ==========  =========   =============   =====  ============

</TABLE>



                       See notes to financial statements.

                                       41

<PAGE>


                       SYNAPTIC PHARMACEUTICAL CORPORATION

                STATEMENTS OF STOCKHOLDERS' EQUITY -- (Continued)

(in thousands, except share information)

<TABLE>

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

                                                                  Net
                                                                 Unrealized
                                                                   Gains                                         Total
                                                    Additional   (Losses)    Deferred      Accumu-               Stock-
                                   Common Stock      Paid-In      on          Compen-       lated     Treasury   holders'
                                 Shares    Amount     Capital    Securities   sation       Deficit     Stock      Equity
                                 ------    ------     -------    ----------   -------     ---------    -----   -----------
Balance at December 31, 1998   10,711,374  $  107    $ 98,516    $     (77)   $  (61)     $ (35,809)  $  --    $    62,676

Forfeiture of Deferred
 Compensation related to
 Stock Incentive Plan                --       --          (11)          --        11             --      --             --
Amortization of Deferred
 Compensation                        --       --           --           --        50             --      --             50
Issuance of 53,287, shares
 of common stock pursuant
 to exercise of stock options    53,287        1          214           --        --             --      --            215
Adjustment to reflect net
 unrealized gain on
 securities                          --       --           --         (714)       --             --      --           (714)
Net loss for the year ended
 December 31, 1999                   --       --           --           --        --        (15,121)     --        (15,121)
                               ----------  -----    ---------    ----------  --------     ---------   -----    -----------
Balance at December 31, 1999   10,764,661  $ 108     $ 98,719    $    (791)   $  (--)     $ (50,930)  $  --    $    47,106
                               ==========  =====    =========    ==========  ========     =========   =====    ===========

</TABLE>

                       See notes to financial statements.


                                       42

<PAGE>



                       SYNAPTIC PHARMACEUTICAL CORPORATION

                            STATEMENTS OF CASH FLOWS
                                 (in thousands)


For the Years Ended December 31, 1999, 1998 and 1997

                                                  1999       1998       1997
- --------------------------------------------------------------------------------
Operating activities:
Net loss                                       $(15,121)  $ (6,493)  $  (5,346)
Adjustments to reconcile net loss to net cash
  (used in) provided by operating activities:
    Depreciation and patent amortization          1,609      1,505       1,209
    Amortization of premiums/(discounts) on
     securities                                     479        226        (123)
    Amortization of deferred compensation            50         79         124
    Gain on sales of securities                      (2)      (128)         --
    Loss on sale of equipment                        32         --          --
    Deferred rent obligation                        247         --          --
Changes in operating assets and liabilities:
    Decrease (increase) in other assets             817       (390)       (816)
   (Decrease) increase in accounts payable,
     accrued liabilities and
     accrued compensation                          (540)       239         490
    Decrease in license agreement
     revenue receivable                              --         40         152
   (Decrease) increase in deferred revenue          (83)        83          --
- --------------------------------------------------------------------------------
Net cash (used in) operating activities         (12,512)    (4,839)     (4,310)

Investing activities:
    Proceeds from sale or maturity of
     investments                                 19,039     70,797      27,666
    Purchases of investments                    (16,349)   (71,799)    (35,696)
    Purchases of property and equipment              80     (2,171)     (2,888)
    Increase in patent and patent application
     costs                                         (827)        --          --
- --------------------------------------------------------------------------------
Net cash (used in) investing activities           1,943     (3,173)    (10,918)

Financing activities:
    Issuance of common stock, net of
     repurchases                                    215      1,436      33,859
    Short-swing profits realized on sale of
     stock by stockholder                            --         53          --
    Payments on capital lease                        --         --        (107)
 -------------------------------------------------------------------------------
Net cash provided by financing activities           215      1,489      33,752
- --------------------------------------------------------------------------------
Net (decrease) increase in cash and cash
    equivalents                                 (10,354)    (6,523)     18,524
Cash and cash equivalents at beginning
    of period                                    16,590     23,113       4,589
- --------------------------------------------------------------------------------
Cash and cash equivalents at end of period     $  6,236   $ 16,590    $ 23,113
================================================================================


Supplemental cash flow disclosure:
    Cash paid for interest                     $     --   $     --    $      5
================================================================================

                      See notes to financial statements.


                                       43
<PAGE>

                       SYNAPTIC PHARMACEUTICAL CORPORATION
                          NOTES TO FINANCIAL STATEMENTS
                                December 31, 1999


Note 1 -- Summary of Significant Accounting Policies

         Organization.  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 in its genomics
program  to  discover  and clone the genes  that code for human  receptors.  The
Company and its  licensees  are also  utilizing  this  technology  in functional
genomics  programs to discover the  function of these  receptors in the body and
thus specific  physiological  disorders with which they may be  associated.  The
Company and its licensees are in turn  utilizing  the cloned  receptor  genes to
design  compounds that can  potentially be developed as drugs for treating these
disorders.

         Basic and  Diluted  Net Loss Per Share.  Net loss per share is computed
using the weighted  average number of shares of common stock  outstanding.  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
diluted net loss per share.

         Revenue  Recognition.  Research  funding revenue is recognized  ratably
over the period of the  collaboration to which it relates.  Payments received in
advance under the related  contracts are 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/or patent
rights.  Non-refundable  payments for licenses  were  recognized at such time as
they were received or, if earlier, became 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,  1999,  is  approximately  $6,234,000  related to
investments  in money market funds.  At December 31, 1998,  this amount  totaled
$16,393,000.

         Marketable  Securities.  All of the Company's marketable securities are
classified as available-for-sale  securities and 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, 1999 consist  primarily of U.S.  Government
and  Federal   Agency   obligations,   U.S.   corporate   debt   securities  and
mortgage-backed  securities.  The maturities  range from March 1, 2000,  through
November 17, 2003.

         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 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
17 years (see Note 9). Software is depreciated

                                       44

<PAGE>


                       SYNAPTIC PHARMACEUTICAL CORPORATION
                   NOTES TO FINANCIAL STATEMENTS--(Continued)
                                December 31, 1999


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 Company periodically reviews capitalized costs to
assess ongoing recoverability.

         Accrued  Liabilities.  Included in accrued  liabilities at December 31,
1999 and 1998 are accrued  professional  fees  totaling  $270,000 and  $506,000,
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.

         Comprehensive  Income (Loss).  In June 1997,  the Financial  Accounting
Standards  Board issued  Statement of Financial  Accounting  Standards  No. 130,
"Reporting   Comprehensive  Income."  This  pronouncement,   which  was  adopted
effective  January  1,  1998,  requires  the  presentation  of  a  statement  of
comprehensive  income.  Comprehensive  income (loss) 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 loss for the
Company,  in  addition  to net loss,  includes  unrealized  gains and  losses on
marketable securities held for sale, currently recorded in stockholders' equity.

         Recent   Accounting   Pronouncements.   In  June  1998,  the  Financial
Accounting  Standards Board issued Statement of Financial  Accounting  Standards
No. 133, "Accounting for Derivatives and Hedging Activities" ("SFAS 133"), which
establishes  accounting  and  reporting  standards for  derivative  instruments,
including   certain   derivative   instruments   embedded  in  other   contracts
(collectively referred to as derivatives) and for hedging activities.  SFAS 133,
as amended, is effective for all fiscal quarters of fiscal years beginning after
June 15, 2000. As the Company does not currently intend to engage in derivatives
or in hedging  transactions,  the Company does not  anticipate any effect on its
results of  operations,  financial  position or cash flows upon the  adoption of
SFAS 133.

                                       45

<PAGE>


                       SYNAPTIC PHARMACEUTICAL CORPORATION
                   NOTES TO FINANCIAL STATEMENTS--(Continued)
                                December 31, 1999


Note 2 -- Marketable Securities

         The  following  is  a  summary  of  all  of  the  Company's  marketable
securities.  All  of  these  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, 1999:
U.S. Treasury obligations and
 obligations of U.S.
 government agencies            $ 8,000,000  $    --    $(279,000)  $ 7,721,000
U.S. corporate debt securities   28,698,000       --     (512,000)   28,186,000
- --------------------------------------------------------------------------------
                                $36,698,000  $    --    $(791,000)  $35,907,000
================================================================================
December 31, 1998:
U.S. Treasury obligations and
 obligations of U.S.
 government agencies            $12,998,000       --     $(43,000)  $12,955,000
U.S. corporate debt securities   25,851,000  $41,000      (79,000)   25,813,000
Mortgage-backed securities        1,016,000    4,000           --     1,020,000
- --------------------------------------------------------------------------------
                                $39,865,000  $45,000    $(122,000)  $39,788,000
================================================================================


         The gross realized gains on sale of  available-for-sale  securities for
the years ending December 31, 1999,  1998 and 1997 totaled $2,000,  $128,000 and
$0,  respectively,  and  the  gross  realized  losses  totaled  $0,  $0 and  $0,
respectively.   The   net   adjustment   to   unrealized   (losses)   gains   on
available-for-sale  securities included as a separate component of stockholders'
equity totaled $(714,000) in 1999, $(103,000) in 1998 and $27,000 in 1997.

                                       46

<PAGE>


                       SYNAPTIC PHARMACEUTICAL CORPORATION
                   NOTES TO FINANCIAL STATEMENTS--(Continued)
                                December 31, 1999


Note 3 -- Collaborative and Licensing Arrangements

         At December 31, 1999, the Company was engaged in a  collaboration  with
Grunenthal  GmbH  ("Grunenthal").  In  addition  to this  ongoing  collaborative
arrangement,  the Company has granted  licenses to certain of its technology and
patent  rights  to  four  other  pharmaceutical  companies.   Details  of  these
arrangements are set forth below:

         Grunenthal   GmbH.   The  Company  and  Grunenthal  are  parties  to  a
collaborative and licensing  agreement  pursuant to which they are collaborating
to discover and develop  drugs for the  treatment of pain.  The Company is using
its  receptor-targeted  drug design technology to identify compounds of interest
and  Grunenthal  is using its  expertise to evaluate the compounds in pain model
systems  and conduct  preclinical  studies.  Grunenthal  will  conduct  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. The Company 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 where Grunenthal retains such rights. To date,
the Company has not recognized any revenue under this collaboration.

         Eli Lilly and Company.  The Company and Eli Lilly and Company ("Lilly")
are parties to a collaborative  and licensing  agreement under which the Company
granted Lilly an exclusive license to use all but two of the Company's serotonin
drug  discovery  systems to promote the  discovery and  development  of receptor
subtype-selective  drugs  for  the  treatment  of  serotonin-related  disorders.
Through July 1999,  Lilly provided funding to the Company to support a specified
number  of the  Company's  scientists  who  conducted  research  as  part of the
collaboration.   Under  the  terms  of  the  agreement,  the  collaboration  and
associated research funding ended on July 30, 1999.

         Lilly is required to pay  royalties on sales of any products  developed
through the use of the  Company's  technology  and is required to make  payments
upon the achievement of certain milestones.

         During  1999,  1998  and  1997,  the  Company  recognized   $1,676,000,
$4,659,000,  and  $4,748,000,  respectively,  in revenue  under this  agreement.
Revenues that have been recognized are not subject to repayment.

         Merck & Co.,  Inc.  The Company and Merck & Co.,  Inc.  ("Merck")  were
parties to a  collaborative  and  licensing  agreement  to identify  and develop
alpha-1a  antagonists,  principally  for the  treatment  of BPH. The Company had
granted  Merck  certain  licenses  and  know-how  to develop  and  commercialize
alpha-1a  antagonists.  Through  February 1999,  Merck  provided  funding to the
Company to support a specified number of the Company's  scientists who conducted
research as part of the  collaboration.  Under the terms of the  agreement,  the
collaboration  and  associated  research  funding ended on February 28, 1999. In
March  2000,  certain  licenses  granted  to Merck  under  this  agreement  will
automatically  terminate  concurrently  with the  termination  of the agreement.
Merck  will  continue  to have a  non-exclusive  license  to use  certain of the
Company's know-how.

         During 1999, 1998 and 1997, the Company  recognized  $83,000,  $482,000
and $1,631,000,  respectively,  in revenue under this  agreement.  Revenues that
have been recognized are not subject to repayment.


                                       47

<PAGE>


                       SYNAPTIC PHARMACEUTICAL CORPORATION
                   NOTES TO FINANCIAL STATEMENTS--(Continued)
                                December 31, 1999


         At December 31, 1998,  the Company had received  $83,000 in advance for
work performed in January and February 1999.

         Novartis Pharma AG. The Company and Novartis Pharma AG ("Novartis") are
parties to two  collaborative  and licensing  agreements under which 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.  Through August 4, 1998,  Novartis provided funding to the Company to
support a specified number of the Company's scientists who conducted research as
part of the collaboration.  Under the terms of the agreements, the collaboration
and associated  research  funding ended on August 4, 1998. After August 4, 2001,
all of these licenses and rights become nonexclusive.

         Novartis is required to pay  royalties on certain  product sales and is
required to make payments upon the achievement of certain milestones.

         During 1998 and 1997, the Company recognized $2,041,000 and $3,406,000,
respectively,   in  revenue  under  this  agreement.  Revenues  that  have  been
recognized are not subject to repayment.

         At December 31, 1999,  Novartis  held 695,715  shares of the  Company's
common stock which represents 6.5% of the outstanding shares of the Company.

         Glaxo Group Limited.  The Company and Glaxo Group Limited of the United
Kingdom  ("Glaxo")  are  parties to a  licensing  agreement  under  which  Glaxo
currently  holds 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.  During  1998,  the
Company  recognized  $2,000,000  in revenue  under this  licensing  arrangement.
Revenue  that has been  recognized  is not  subject to  repayment.  Synaptic  is
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.


                                       48

<PAGE>


                       SYNAPTIC PHARMACEUTICAL CORPORATION
                   NOTES TO FINANCIAL STATEMENTS--(Continued)
                                December 31, 1999


Note 4 -- Property and Equipment

         Property  and  equipment  consists of the  following as of December 31,
1999 and 1998:



                                                  1999            1998
- ------------------------------------------------------------------------

Scientific equipment                        $   6,745,000   $   6,332,000
Furniture and fixtures                            192,000         188,000
Office equipment                                  521,000         514,000
Leasehold improvements                          2,218,000       2,003,000
Software                                          967,000         923,000
Equipment under capitalized leases                658,000         658,000
- ------------------------------------------------------------------------
                                               11,301,000      10,618,000
Accumulated depreciation and amortization      (6,115,000)     (4,885,000)
- ------------------------------------------------------------------------
                                            $   5,186,000   $   5,733,000
=========================================================================


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, the last of which ended in
1997.

         Accumulated  amortization  on leased  equipment as of December 31, 1999
and 1998 was $658,000.

                                       49

<PAGE>


                       SYNAPTIC PHARMACEUTICAL CORPORATION
                   NOTES TO FINANCIAL STATEMENTS--(Continued)
                                December 31, 1999


Note 6 -- Stockholders' Equity

         Common  Stock.  In 1997,  the Company  completed  a public  offering of
2,875,000 shares of its common stock.

         In January 1998,  warrants to purchase  137,648 shares of the Company's
Common Stock were  exercised at $9.50 per share.  There are  currently no common
stock warrants outstanding.

         The total number of shares of Common Stock  outstanding  was 10,764,661
as of December  31,  1999.  None of the  outstanding  common stock is subject to
repurchase.

         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 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.



                                       50

<PAGE>


                       SYNAPTIC PHARMACEUTICAL CORPORATION
                   NOTES TO FINANCIAL STATEMENTS--(Continued)
                                December 31, 1999


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.   In  May  1998,  the  Company's
stockholders  approved an amendment to the 1996 Plan which increased the maximum
number of shares  available  for awards  under the 1996 Plan from  1,100,000  to
2,100,000. Effective as of January 1, 1996, the 1996 Plan replaced the 1988 Plan
with  respect  to all  future  stock and  option  awards by the  Company  to its
employees and consultants.  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).

         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).  At December 31, 1999,  693,603 shares remain  available for
future  awards  under  the  1996  Plan.  As  of  December  31,  1999,  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 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

                                       51

<PAGE>


                       SYNAPTIC PHARMACEUTICAL CORPORATION
                   NOTES TO FINANCIAL STATEMENTS--(Continued)
                                December 31, 1999


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
                                                                     Option
                                       1996       1988    Director    Price
                                       Plan       Plan      Plan    Per Share
- ------------------------------------------------------------------------------
Outstanding at January 1, 1997       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
Granted                              339,543         --   15,000     $13.36
Exercised                             (4,453)   (43,063)      --     $ 2.70
Forfeited                            (60,918)    (4,375)      --     $12.36
- ------------------------------------------------------------------------------
Outstanding at December 31, 1998   1,125,235    217,864   45,000     $11.39
Granted                              432,100         --   20,000     $ 4.92
Exercised                            (22,542)   (30,745)      --     $ 4.03
Forfeited                           (158,516)      (625)      --     $12.86
- ------------------------------------------------------------------------------
Outstanding at December 31, 1999   1,376,277    186,494   65,000     $ 9.69
==============================================================================
Exercisable at December 31, 1999     345,592    186,494   46,562     $ 9.90
==============================================================================
Exercisable at December 31, 1998     202,195    211,276   30,000     $ 8.10
==============================================================================
Exercisable at December 31, 1997      71,511    221,212   15,000     $ 5.27
==============================================================================

                                       52

<PAGE>


                       SYNAPTIC PHARMACEUTICAL CORPORATION
                   NOTES TO FINANCIAL STATEMENTS--(Continued)
                                December 31, 1999


         The  following  table  discloses at December 31, 1999,  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       186,494     $ 1.78     2.4 years       186,494       $ 1.78

Prices ranging
 from
$4.25 - $6.875      444,100     $ 4.72     9.9 years         5,312       $ 6.15

Prices ranging
 from
$10.125 - $15.25    868,677     $12.90     8.0 years       283,592       $12.86

Prices ranging
 from
$16.50 - $17.75     128,500     $16.66     6.5 years       103,250       $16.62


         Other Disclosures. During 1999, 1998 and 1997, all options were granted
with an exercise price equal to the market price of the common stock on the date
of grant. 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  weighted-average  fair value of options  granted during 1999, 1998
and 1997 approximated $3.19, $7.66 and $7.59,  respectively.  The fair value for
these  options was estimated at the date of grant using a  Black-Scholes  option
pricing  model  with  the  following   assumptions  for  1999,  1998  and  1997,
respectively:  weighted  average  risk-free  interest rates of 6.13%,  4.70% and
5.92%; 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 .741,  .628 and .623,  were used for 1999,  1998 and
1997, respectively.

         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.

                                       53

<PAGE>


                       SYNAPTIC PHARMACEUTICAL CORPORATION
                   NOTES TO FINANCIAL STATEMENTS--(Continued)
                                December 31, 1999


         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:

                                     1999              1998             1997
- -------------------------------------------------------------------------------
Pro forma net loss             $(16,801,000)      $(7,863,000)     $(6,113,000)
Pro forma net loss per share   $      (1.56)      $     (0.74)     $     (0.75)
- -------------------------------------------------------------------------------

         For  certain  options  granted  prior to  1997,  the  Company  recorded
pursuant to APB No. 25 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 was being  amortized over the
vesting period of each option  granted.  Amortization  of deferred  compensation
under the  Incentive  Plans  amounted  to  approximately  $50,000,  $79,000  and
$124,000 during 1999, 1998 and 1997,  respectively.  In addition,  approximately
$11,000,  $20,000  and  $12,000 of  deferred  compensation  as it relates to the
Incentive Plans was reversed during 1999,  1998 and 1997,  respectively,  due to
the forfeiture of the unvested options.  At December 31, 1999, all such deferred
compensation has been amortized.


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.

         At December  31, 1999 and 1998,  the  Company  had net  operating  loss
("NOL")   carryforwards   of   approximately    $45,000,000   and   $30,000,000,
respectively,  for Federal  income tax purposes that will expire  principally in
the years  2002  through  2019.  In  addition,  the  Company  had  research  and
development credit  carryforwards of approximately  $1,610,000 which will expire
principally in 2002 through 2018. 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.

                                       54

<PAGE>


                       SYNAPTIC PHARMACEUTICAL CORPORATION
                   NOTES TO FINANCIAL STATEMENTS--(Continued)
                                December 31, 1999


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


                                               1999         1998         1997
- --------------------------------------------------------------------------------
Tax at U.S. statutory rates                $(5,141,000) $(2,208,000)$(1,818,000)
State income taxes                            (898,000)    (386,000)   (318,000)
Research and development credit                     --     (110,000)         --
Expiration of state NOL's                      248,000        2,000     356,000
Other                                          (16,000)      50,000     108,000
Valuation allowance recorded                 5,807,000    2,652,000   1,672,000
- --------------------------------------------------------------------------------
    Recorded tax provision                          --           --          --
================================================================================


     Significant  components of the Company's deferred tax assets as of December
31, 1999 and 1998, are as follows:


                                                          1999           1998
- --------------------------------------------------------------------------------
Deferred tax assets:
  Net operating loss carryforwards                   $  17,233,000 $ 11,782,000
  Research and development credit carryforwards          1,610,000    1,610,000
  Book over tax amortization                             1,638,000    1,282,000
- --------------------------------------------------------------------------------
    Total deferred tax assets                           20,481,000   14,674,000
  Valuation allowance                                  (20,481,000) (14,674,000)
- --------------------------------------------------------------------------------
  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,  1999,  1998 and 1997
approximated  $1,749,000,  $693,000,  and $703,000,  respectively,  and included
executory costs of $579,000, $120,000 and $93,000, respectively. At December 31,
1998, a standby letter of credit for $580,000 had been outstanding as a security
deposit. A bank imposed  restriction had been placed on $600,000 in cash held in
the Company's investment account to secure the letter of credit.


                                       55

<PAGE>


                       SYNAPTIC PHARMACEUTICAL CORPORATION
                   NOTES TO FINANCIAL STATEMENTS--(Continued)
                                December 31, 1999


         As of December 31, 1999, future minimum annual payments under the lease
are as follows:

       2000       $  1,575,000
       2001          1,611,000
       2002          1,611,000
       2003          1,611,000
       2004          1,611,000
 Thereafter         22,498,000
                  ------------
      Total       $ 30,517,000
                  ============


         The  Company  is party to a  license  agreement  with a major  research
university.  Under the terms of this agreement, the Company received a worldwide
nonexclusive license under a patent issued in January 1991, which patent expires
in 2008.  The Company is  committed  under this  agreement  to pay  royalties on
future net sales of products employing the technology or falling under claims of
the patents covered by this agreement.

         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, 1999, the Company had entered into agreements with each
of its Senior Vice  President and Chief  Financial  Officer,  Vice President for
Research,  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
$133,000,  $117,000 and $107,000 for the years ended December 31, 1999, 1998 and
1997, respectively, vests over a six-year period.


                                       56

<PAGE>


                       SYNAPTIC PHARMACEUTICAL CORPORATION
                   NOTES TO FINANCIAL STATEMENTS--(Continued)
                                December 31, 1999


         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 Event

         On January 24, 2000, the Company  entered into a research and licensing
agreement  with Kissei  Pharmaceutical  Co.,  Ltd.  ("Kissei"),  to identify and
develop  drugs  that  act  through  novel  receptors  which  will be  identified
utilizing the Company's genomics discovery  technologies.  Under the term of the
three-year  agreement,  Kissei  will  provide  funding to the Company to support
research that is aimed at  discovering  novel  receptors  through the use of the
Company's  proprietary  genomics  technologies.  In  addition  to  the  research
funding,  the  agreement  provides  for a license  fee,  milestone  payments and
royalty payments to the Company on sales of any products. In return, the Company
granted Kissei worldwide  exclusive rights to use selected  receptors  resulting
from the collaboration to develop, manufacture and market drugs that act through
such receptors.

                                       57

<PAGE>



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

         None.


                                   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.






                                       58

<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
                  March 24, 1999  (incorporated  by  reference to Exhibit 3.2 to
                  the  Company's  Quarterly  Report on Form  10-Q  filed for the
                  quarter ended March 31, 1999, Commission File Number 0-27324)
       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)


                                         59

<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  Nonqualified  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)


                                       60

<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       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)
     +10.12       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)
      10.13       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)
     +10.14       1996 Incentive Plan of the Company, as amended on May 12, 1998
                  (incorporated  by reference to Exhibit  10.14 to the Company's
                  Annual  Report on Form 10-K  filed for the  fiscal  year ended
                  December 31, 1998, Commission File Number 0-27324)
     +10.15       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)
     +10.16       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)
     +10.17       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)
     +10.18       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)
     +10.19       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)


                                       61

<PAGE>




     +10.20       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)
     +10.21       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)
     +10.22       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)
     +10.23       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)
   ***10.24       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)
   ***10.25       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)
      10.26       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)
      10.27       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)
    **10.28       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)
   ***10.29       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)


                                       62

<PAGE>




     +10.30       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)
     +10.31       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)
   ***10.32       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)
     +10.33       Executive Employment Agreement effective as of October 1,1997,
                  between the Company and Dr. Kathleen P. Mullinix (incorporated
                  by reference to   Exhibit 10.34 to the Company's Annual Report
                  on  Form 10-K filed for the fiscal  year  ended  December  31,
                  1997, Commission File No. 0-27324)
      10.34       Lease Agreement  dated November 19, 1997,  between the Company
                  and Century  Associates,  which becomes  effective  January 1,
                  1998  (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, 1997, Commission File No. 0- 27324)
      10.35       Amendment  No.  3  to  Research   Collaboration   and  License
                  Agreement  dated as of December  1, 1997,  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, 1997,  Commission  File No.
                  0-27324)
     +10.36       Amended and Restated Employment  Agreement dated as of January
                  1,  1998,   between   the   Company   and  Robert  L.   Spence
                  (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, 1997, Commission File No. 0-27324)
   ***10.37       Cooperation  Agreement  dated as of January 12, 1998,  between
                  the Company and Grunenthal GmbH  (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, 1997,  Commission
                  File No. 0-27324)
     +10.38       Amended and Restated Employment Agreement dated as of February
                  7, 1998, between the Company and Lisa L. Reiter  (incorporated
                  by reference to Exhibit 10.39 to the  Company's  Annual Report
                  on Form 10-K filed for the  fiscal  year  ended  December  31,
                  1997, Commission File No. 0-27324)
      10.39       Amendment No.4 to Research Collaboration and License Agreement
                  dated as of March 2,1998, between the Company and Merck & Co.,
                  Inc. (incorporated  by  reference  to  Exhibit  10.40  to  the
                  Company's Annual Report on Form 10-K filed for the fiscal year
                  ended December 31, 1997, Commission File No. 0-27324)


                                       63

<PAGE>




   ***10.40       Option  and  License  Agreement  dated as of  March  2,  1998,
                  between the Company and Glaxo Group Limited  (incorporated  by
                  reference to Exhibit 10.41 to the  Company's  Annual Report on
                  Form 10-K filed for the fiscal year ended  December  31, 1997,
                  Commission File No. 0-27324)
     +10.41       Employment  Agreement  dated as of April 1, 1998,  between the
                  Company and Theresa A. Branchek  (incorporated by reference to
                  Exhibit 10.1 to the  Company's  Quarterly  Report on Form 10-Q
                  filed for the quarter  ended March 31, 1998,  Commission  File
                  Number 0-27324)
     +10.42       Incentive  Stock  Option  Agreement  dated as of May 12, 1998,
                  between the Company and Theresa A. Branchek  (incorporated  by
                  reference to Exhibit 10.1 to the Company's Quarterly Report on
                  Form  10-Q  filed  for  the  quarter   ended  June  30,  1998,
                  Commission File Number 0-27324)
     +10.43       Nonqualified  Stock Option Agreement dated as of May 12, 1998,
                  between the Company and Theresa A. Branchek  (incorporated  by
                  reference to Exhibit 10.2 to the Company's Quarterly Report on
                  Form  10-Q  filed  for  the  quarter   ended  June  30,  1998,
                  Commission File Number 0-27324)
      10.44       Amendment No. 1 to Cooperation  Agreement  between the Company
                  and Grunenthal GmbH (incorporated by reference to Exhibit 10.1
                  to the Company's  Quarterly  Report on Form 10-Q filed for the
                  quarter  ended  September  30,  1998,  Commission  File Number
                  0-27324)
      10.45       First  Amendment  to Lease  dated  as of  November  25,  1998,
                  between   ARE-215   College   Road,   LLC,   and  the  Company
                  (incorporated  by reference to Exhibit  10.45 to the Company's
                  Annual  Report on Form 10-K  filed for the  fiscal  year ended
                  December 31, 1998, Commission File No. 0-27324)
      10.46       Amendment  No.  5  to  Research   Collaboration   and  License
                  Agreement  dated as of December  1, 1998,  between the Company
                  and Merck & Co.,  Inc.  (incorporated  by reference to Exhibit
                  10.46 to the  Company's  Annual  Report on Form 10-K filed for
                  the fiscal year ended December 31, 1998,  Commission  File No.
                  0-27324)
      10.47       Addendum  No. 3 to  Research,  Option  and  License  Agreement
                  effective  as of January 1, 1999,  between the Company and Eli
                  Lilly and Company  (incorporated by reference to Exhibit 10.47
                  to the  Company's  Annual  Report on Form  10-K  filed for the
                  fiscal  year ended  December  31,  1998,  Commission  File No.
                  0-27324)
      23.1        Consent of Independent Auditors, Ernst & Young LLP
      24          Powers of Attorney
      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.




                                       64

<PAGE>



**    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, 1999.


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 11,  2000,
will be furnished to the Securities and Exchange Commission at the time they are
distributed to the Registrant's stockholders.

















      Imitrex(R) and Zantac(R) are registered  trademarks of Glaxo Wellcome Inc.
Hytrin(R) is the registered trademark of Abbott Laboratories. Claritin(R) is the
registered  trademark of Schering  Corporation.  Propulsid(R)  is the registered
trademark of Johnson & Johnson. All other brand names or trademarks appearing in
this Report are the property of their respective owners.


                                       65

<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 24, 2000             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        Chairman, President and
- ---------------------------       Chief Executive Officer         March 24, 2000
Kathleen P. Mullinix, Ph.D.


/s/ Robert L. Spence            Senior Vice President and
- ---------------------------       Chief Financial Officer
Robert L. Spence                  (Principal Accounting Officer)  March 24, 2000


         *                      Director                          March 24, 2000
- ---------------------------
Jonathan J. Fleming


         *                      Director                          March 24, 2000
- ---------------------------
Zola P. Horovitz, Ph.D.


         *                      Director                          March 24, 2000
- ---------------------------
Eric R. Kandel, M.D.


         *                      Director                          March 24, 2000
- ---------------------------
John E. Lyons


         *                      Director                          March 24, 2000
- ---------------------------
Patrick J. McDonald


         *                      Director                          March 24, 2000
- ---------------------------
Sandra Panem


         *                      Director                          March 24, 2000
- ---------------------------
Alison Taunton-Rigby, Ph.D.




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



                                                            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 February 4, 2000,  with
respect  to the  financial  statements  of Synaptic  Pharmaceutical  Corporation
included in the Annual Report (Form 10-K) for the year ended December 31, 1999.


                                            /s/ ERNST & YOUNG LLP

Hackensack, New Jersey
March 22, 2000






                                                                  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. Koff,
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 20, 2000
- ------------------------------     President, and Chief
    Kathleen P. Mullinix           Executive Officer


/s/ Robert L. Spence               Senior Vice President,      March 20, 2000
- ------------------------------     Chief Financial Officer,
    Robert L. Spence               and Treasurer


/s/ Jonathan J. Fleming            Director                    March 20, 2000
- ------------------------------
    Jonathan J. Fleming


/s/ Zola P. Horovitz, Ph.D         Director                    March 20, 2000
- ------------------------------
    Zola P. Horovitz, Ph.D


/s/ Eric R. Kandel, M.D            Director                    March 20, 2000
- ------------------------------
    Eric R. Kandel, M.D


/s/ John E. Lyons                  Director                    March 20, 2000
- ------------------------------
    John E. Lyons


/s/ Patrick J. McDonald            Director                    March 20, 2000
- ------------------------------
    Patrick J. McDonald


/s/ Sandra Panem, Ph.D             Director                    March 20, 2000
- ------------------------------
    Sandra Panem, Ph.D


/s/ Alison Taunton-Rigby, Ph.D     Director                    March 20, 2000
- ------------------------------
    Alison Taunton-Rigby, Ph.D

<TABLE> <S> <C>

<ARTICLE> 5

<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-END>                               DEC-31-1999
<CASH>                                       6,236,000
<SECURITIES>                                35,907,000
<RECEIVABLES>                                        0
<ALLOWANCES>                                         0
<INVENTORY>                                          0
<CURRENT-ASSETS>                            13,554,000
<PP&E>                                      11,301,000
<DEPRECIATION>                               6,115,000
<TOTAL-ASSETS>                              48,750,000
<CURRENT-LIABILITIES>                        1,397,000
<BONDS>                                              0
                                0
                                          0
<COMMON>                                       108,000
<OTHER-SE>                                  46,998,000
<TOTAL-LIABILITY-AND-EQUITY>                48,750,000
<SALES>                                              0
<TOTAL-REVENUES>                             1,855,000
<CGS>                                                0
<TOTAL-COSTS>                               19,652,000
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                           (15,121,000)
<INCOME-TAX>                                         0
<INCOME-CONTINUING>                       (15,121,000)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                              (15,121,000)
<EPS-BASIC>                                     (1.41)
<EPS-DILUTED>                                   (1.41)


</TABLE>


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