SUNPHARM CORPORATION
10KSB, 1999-03-31
PHARMACEUTICAL PREPARATIONS
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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                      ------------------------------------

                                   FORM 10-KSB
         (Mark One)

         [X]      ANNUAL REPORT UNDER SECTION 13 OR 15(d) OF
                  THE SECURITIES EXCHANGE ACT OF 1934
                       For the fiscal year ended December 31, 1998
                                       OR

         [ ]      TRANSITION REPORT UNDER SECTION 13 OR 15(d) OF
                  THE SECURITIES EXCHANGE ACT OF 1934
                       For the transition period from __________ to __________
                         Commission File Number 0-27578

                              SUNPHARM CORPORATION
                 (Name of small business issuer in its charter)

                  Delaware                                      F593097048
       (State or other jurisdiction of                       (I.R.S. Employer
       incorporation or organization)                       Identification No.)

       The Veranda, Suite 301
       819 Highway A1A,
       Ponte Vedra Beach, Florida                                  32082
  (Address of principal executive offices)                      (Zip Code)

                                 (904) 394-2800
                           (Issuer's telephone number)
                      ------------------------------------
            Securities registered under Section 12(b) of the Exchange
             Act: None Securities registered under Section 12(g) of
                                the Exchange Act:
                                 Title of Class
                    Common Stock, par value $.0001 per share
                    Redeemable Common Stock Purchase Warrants
 Units consisting of Common Stock and Redeemable Common Stock Purchase Warrants

         Check whether the Issuer (1) filed all reports  required to be filed by
Section 13 or 15(d) of the  Exchange  Act during the past 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 [ ]

         Check if there is no  disclosure  of  delinquent  filers in response to
Item 405 of  Regulation  S-B contained in this form,  and no disclosure  will be
contained,  to the  best of the  Issuer's  knowledge,  in  definitive  proxy  or
information statements incorporated by reference in Part III of this Form 10-KSB
or any amendment to this Form 10-KSB. [ ]

         The Issuer's revenues for its most recent fiscal year: $230,729

         The  aggregate  market  value  of  the  voting  common  stock  held  by
non-affiliates  of the Issuer on March 16,  1999 was  $12,111,733,  based on the
closing sales price of the Issuer's  common stock on the Nasdaq Small Cap Market
on such date of $2.13 per share,  and assuming  full  conversion of the Issuer's
Series A Redeemable  Convertible Preferred Stock . For purposes of the preceding
sentence only, all directors,  executive  officers and beneficial  owners of ten
percent or more of the common  stock are assumed to be  affiliates.  As of March
16, 1999,  6,739,475  shares of the Issuer's  common stock and 300,000 shares of
the Issuer's Series A Redeemable Convertible Preferred Stock were outstanding.

         DOCUMENTS  INCORPORATED BY REFERENCE:  CERTAIN SECTIONS OF THE ISSUER'S
DEFINITIVE  PROXY  STATEMENT  RELATING TO THE  ISSUER'S  1999 ANNUAL  MEETING OF
STOCKHOLDERS,  WHICH PROXY STATEMENT WILL BE FILED UNDER THE SECURITIES EXCHANGE
ACT OF 1934, AS AMENDED,  WITHIN 120 DAYS OF THE END OF THE ISSUER'S FISCAL YEAR
ENDED  DECEMBER 31, 1998,  ARE  INCORPORATED  BY REFERENCE INTO PART III OF THIS
FORM 10-KSB.

         Transitional Small Business  Disclosure Format (check one): Yes [_]; No
[X]

================================================================================
<PAGE>

                                     PART I

         WHEN  USED  IN  THIS  DOCUMENT,  THE  WORDS  "ANTICIPATES,"  "EXPECTS,"
"BELIEVES,"   "INTENDS"  AND  SIMILAR   EXPRESSIONS  ARE  INTENDED  TO  IDENTIFY
FORWARD-LOOKING  STATEMENTS.  SUCH  STATEMENTS  ARE  SUBJECT TO  CERTAIN  RISKS,
UNCERTAINTIES   AND   ASSUMPTIONS.   SHOULD  ONE  OR  MORE  OF  THESE  RISKS  OR
UNCERTAINTIES  MATERIALIZE,  OR SHOULD  UNDERLYING  ASSUMPTIONS PROVE INCORRECT,
ACTUAL RESULTS MAY VARY MATERIALLY FROM THOSE ANTICIPATED,  EXPECTED,  ESTIMATED
OR  PROJECTED.  FOR  ADDITIONAL  DISCUSSION  OF SUCH  RISKS,  UNCERTAINTIES  AND
ASSUMPTIONS, SEE "ITEM 1. DESCRIPTION OF BUSINESS--RISK FACTORS."

ITEM 1.  DESCRIPTION OF BUSINESS.

         SunPharm    Corporation    ("SunPharm"   or   the   "Company")   is   a
development-stage  company  engaged  in the  design  and  development  of  small
molecule  pharmaceutical  products,  consisting of novel polyamine  analogue and
metal  chelator  compounds  invented at the  University  of Florida and licensed
exclusively worldwide to the Company. The Company's drug development efforts are
focused on cancer, refractory diarrhea associated with acquired immunodeficiency
syndrome ("AIDS"),  other  gastrointestinal  disorders,  and iron overload.  The
Company  currently has 9 compounds in various stages of research or development,
targeting 6 indications.

         Two of the  Company's  polyamine  analogue  compounds  have advanced to
Phase II clinical trials. Diethylhomospermine ("DEHOP"), which completed a Phase
II clinical trial in 1997 for the treatment of refractory AIDS-related diarrhea,
is currently  undergoing  additional  evaluation for safety.  A second compound,
diethylnorspermine ("DENSPM"), is in a Phase II clinical trial for the treatment
of  various  solid  tumor  cancers  under  the  direction  of  the  Parke  Davis
Pharmaceutical  Research Division of the Warner-Lambert  Company,  pursuant to a
sublicense agreement.

         The Company is also  conducting  preclinical  studies of several  other
potential  lead  compounds  and  indications   through  its  sponsored  research
agreement with the  University of Florida,  with the objective of readying these
compounds  for pilot  studies in humans at the earliest  possible  time. In this
regard,  the Company  intends to file an  Investigational  New Drug  Application
("IND") for each of the following  compounds and indications in 1999: DENSPM for
psoriasis  and  the  human  immuno-deficiency  virus  ("HIV"),   diethylspermine
("DESPM")  for  AIDS-related  diarrhea,   pyrrole-carboxylic  acid  ("PCA")  for
ulcerative  colitis,  and the  monosodium  salt of  hydroxybenzylethylenediamine
diacetic  acid  ("HBED") for  Cooley's  anemia.  In addition,  the Company has a
potential     orally     active     analogue     of    the     iron     chelator
desazadesmethyldesferrithiocin ("DFT") in preclinical development.

         The Company's  strategy is to develop products both  independently  and
through  strategic  alliances,  pursuant to which the Company  seeks  financial,
preclinical  and clinical trial  assistance  from larger  pharmaceutical  and/or
biotechnology  companies  for novel  drugs with broad  market  potential,  while
retaining  parallel  manufacturing  and/or  marketing  rights for all or part of
those products. Consistent with this strategy, the Company sublicensed worldwide
rights  (excluding  Japan) to  manufacture  and  market  DENSPM  for all  cancer
indications to  Warner-Lambert  in May 1993 and sublicensed such rights in Japan
to Nippon Kayaku Co., Ltd.  ("Nippon  Kayaku") in February 1994.  Warner-Lambert
and Nippon  Kayaku have agreed to make staged  payments to SunPharm  for license
fees and  research  and  development  milestones,  of which an aggregate of $3.1
million  has  been  paid to date,  and to pay  royalties  on  sales of  products
incorporating DENSPM. In addition,  Warner-Lambert and Nippon Kayaku have agreed
to fund and  administer all further  clinical  trials which may be conducted for
DENSPM in cancer indications.

         The  Company  was   incorporated   in  Delaware  in  1990  as  Lexigen,
Incorporated and in 1991 changed its name to SunPharm Corporation. The Company's
principal  executive offices are located at The Veranda,  Suite 301, 814 Highway
A1A, Ponte Vedra Beach,  Florida 32082. The Company's  telephone number is (904)
394-2800.  SunPharm supports a principal  research facility at the University of
Florida in Gainesville, Florida, and maintains a quality assurance laboratory in
Alachua, Florida.

                                       2

<PAGE>

TECHNOLOGY OVERVIEW

         DEVELOPMENT OF POLYAMINE ANALOGUE TECHNOLOGY

         For the past fifteen  years,  the inventor of the  Company's  polyamine
analogues,  Dr. Raymond  Bergeron,  has conducted  research at the University of
Florida  directed  towards the  development of polyamine  analogues as potential
anti-cancer  agents.  This  research  has been  supported  by over $6 million of
funding under National Cooperative Drug Discovery Group grants from the National
Cancer Institute and, since 1992,  nearly $6 million of funding from the Company
through December 31, 1998.

         CHARACTERISTICS AND FUNCTIONS OF POLYAMINES

         Human cells contain three essential,  naturally  occurring  polyamines:
putrescine,  spermidine  and  spermine.  In contrast to building  blocks such as
amino  acids,  nucleotides  and  sugars,  polyamines  do  not  incorporate  into
macromolecules  but remain as  metabolically  distinct  entities  within  cells.
Research  indicates that these  polyamines bind to nucleic acids and promote the
integrity  and  fidelity  of  many of  their  functions,  such  as  replication,
supercoiling,  ribonucleic acid ("RNA") transcription and processing and protein
synthesis.   These   functions  of   polyamines   are   necessary  for  cellular
proliferation to occur.

         Human cells employ a family of enzymes to maintain the proper  balance,
or equilibrium, of polyamines.  Included in this family of enzymes are ornithine
decarboxylase ("ODC") and S-adenosylmethionine  decarboxylase  ("SAMDC"),  which
make  or   synthesize   polyamines   for  the  cell,   and   spermidine/spermine
N1-acetyltransferase  ("SSAT"),  which  controls the export and/or  recycling of
polyamines  from the cell. All three of these enzymes are  short-lived,  rapidly
inducible proteins, and are tightly regulated by intracellular  polyamine pools.
Working  together,  these  enzymes  function in a highly  coordinated  manner to
maintain polyamine pools within a very narrow range of concentration  inside the
cell.

         The Company's polyamine analogue compounds are structurally  similar to
(hence,  "analogues" of) the cell's naturally occurring  polyamines.  Because of
this  similarity,  these  analogues are recognized as natural  polyamines by the
cell's  polyamine  uptake system and thus gain entry into the cell.  Once inside
the cell, the Company's polyamine analogues disrupt the cell's polyamine balance
and  biosynthetic  network,  causing  the cell to shut down the  enzymes ODC and
SAMDC that would normally make natural polyamines, and to increase production of
SSAT,  the enzyme which is  responsible  for the breakdown and export of natural
polyamines  from the cell. The combined  effect on the enzymes  controlling  the
proper level of polyamines in the cell results is a substantial reduction in the
amount of natural  polyamines  in the cell and a  corresponding  increase in the
amount  of  analogues  in the cell.  Because  cancer  cells  have a high rate of
polyamine biosynthesis and contain higher concentrations of essential polyamines
than normal cells,  the Company  believes that the substitution of its polyamine
analogues for the naturally  occurring  polyamines will counteract the increased
level of polyamines present in the cancer cells, thereby reducing the ability of
the cancer cells to proliferate.

         The  Company has  discovered,  through  its  sponsored  research at the
University  of  Florida,   that  certain   polyamine   analogues   modify  other
cell-related    activities    besides   cell    proliferation.    For   example,
Company-sponsored  work on uncovering  DEHOP's  mechanism of action in arresting
diarrhea  suggests  that  DEHOP  interacts  with  several  receptor   complexes,
including   the   N-methyl-D-aspartate    ("NMDA")   receptor,   which   control
neuromuscular function.  Additional evidence suggests that DEHOP also stimulates
nitric oxide release,  which could be responsible  for DEHOP's  promotion of the
relaxation of smooth muscles in the  gastrointestinal  tract. This is consistent
with studies  indicating that the smooth muscle relaxation  promoted by DEHOP is
inhibited by the nitric oxide synthase inhibitor L-NAME.

         DEVELOPMENT OF METAL CHELATOR TECHNOLOGY

         A second technology platform,  consisting of proprietary metal chelator
compounds  invented by Dr.  Bergeron  at the  University  of  Florida,  has been
licensed exclusively to the Company. Metal chelators are drugs that bind tightly
to certain metals,  such as iron, in the bloodstream and inside cells, acting to
eliminate  quantities in excess of the body's needs,  thereby avoiding damage to
vital organs such as the liver,  heart and pancreas.  Chelators are administered
to  supplement  the body's poorly  developed  ability to get rid of excess metal
concentrations. 

                                       3

<PAGE>

PRODUCTS UNDER DEVELOPMENT

         The Company  currently has 9 compounds in various stages of research or
development,  targeting 6 indications, including two compounds that have reached
Phase II clinical trials.  These products are based on novel polyamine  analogue
compounds  and metal  chelators  developed  at the  University  of  Florida  and
licensed  exclusively to the Company.  Additional  compounds and/or  indications
discovered by Dr. Bergeron and his staff will also be licensed to the Company on
an exclusive  worldwide  basis pursuant to the terms of the Company's  sponsored
research  agreement  with  the  University  of  Florida.   The  following  table
summarizes  the Company's  current  product  portfolio,  or pipeline,  which has
resulted from the license  agreement and sponsored  research  agreement with the
University of Florida:

<TABLE>
<CAPTION>
                                              PRODUCT PIPELINE
- - -----------------------------------------------------------------------------------------------------------

DISEASE AREA             COMPOUND                 INDICATION                         STATUS
- - ------------             --------                 ----------                         ------
- - -----------------------------------------------------------------------------------------------------------
<S>                      <C>               <C>                        <C>
Cancer                   DENSPM            cancer                     Phase II commenced  1st Qtr.  1998 by
                                                                      Warner-Lambert Co.

                         DPNSPM            cancer                     Preclinical development

                         DENOHO            cancer                     Preclinical development

                         DEHOHO            cancer                     Preclinical development
- - -----------------------------------------------------------------------------------------------------------
AIDS                     DEHOP             AIDS-related diarrhea      Phase II completed 4th Qtr. 1997;
                                                                      further evaluation for safety ongoing

                         DESPM             AIDS-related diarrhea      Preclinical development

                         DENSPM            HIV                        Preclinical development
- - -----------------------------------------------------------------------------------------------------------
Gastrointestinal
Disorders                PCA               Ulcerative colitis         Preclinical development
- - -----------------------------------------------------------------------------------------------------------
Others                   DENSPM            Psoriasis                  Preclinical development

                         HBED              Cooley's anemia            Preclinical development

                         DFT Analogue      Cooley's anemia            Preclinical development
- - -----------------------------------------------------------------------------------------------------------
</TABLE>

CANCER

         BACKGROUND.  The American  Cancer Society  estimates that more than 1.2
million new cases of cancer will be diagnosed and more than 500,000  people will
die of cancer in 1999 in the United States. Chemotherapy,  surgery and radiation
are the major  components in the current  treatment of cancer.  Chemotherapy  is
usually the primary  treatment for cancers,  such as  hematologic  malignancies,
which cannot be excised by surgery.  In addition,  chemotherapy  is increasingly
being used as an adjunct  to  radiation  and  surgery  to improve  efficacy  and
address metastases (the spread of cancer), and as primary therapy for some solid
tumors. The standard strategy for chemotherapy is to destroy the malignant cells
by exposing them to as much drug as the patient can tolerate. Clinicians attempt
to design a combination of drugs,  dosing schedule and method of  administration
that increases the  probability  that malignant  cells will be destroyed,  while
minimizing the harm to healthy cells.

                                        4

<PAGE>

         Most current  anti-cancer drugs have significant  limitations.  Certain
cancers,  such as colon,  lung,  kidney and pancreatic  cancers,  are inherently
unresponsive  to  chemotherapeutic  agents.  Certain other cancers may initially
respond to a  chemotherapeutic  agent,  but cease to respond as the cancer cells
acquire  resistance  to the drug  during the course of  therapy.  As such cancer
cells  develop  resistance  to a  specific  chemotherapeutic  agent,  they often
simultaneously  become  resistant  to a wide variety of  structurally  unrelated
agents  through a phenomenon  known as  "multi-drug  resistance."  Additionally,
current  anti-cancer drugs are generally highly toxic,  with effects,  including
bone marrow suppression and irreversible cardiotoxicity, which can prevent their
administration in therapeutic doses.

         DENSPM.  Phase I clinical  trials for DENSPM in refractory  solid-tumor
cancer  commenced in January 1994 at the  University  of Florida,  Johns Hopkins
University and Roswell Park Cancer  Institute.  The protocol  allowed for dosing
regimens of one,  two and three times per day at each center,  respectively,  in
order to determine  DENSPM's maximum tolerated dose and side effects.  Following
the Phase I trials, the Company and its sublicensee  Warner-Lambert  agreed that
the  maximum  tolerated  dose had been  determined  at all dosage  regimens.  In
December  1996,  the Company  received the remaining  $500,000 of the $1,000,000
milestone  payment due from  Warner-Lambert  upon reaching that  milestone,  and
transferred  the IND for the clinical  trial to  Warner-Lambert.  In early 1998,
Warner-Lambert  commenced  Phase II clinical trials of DENSPM in six solid tumor
cancers and will be responsible for all subsequent  clinical  development of the
compound (excluding Japan) in cancer applications.

         DEHOP.  This compound was first tested at the  University of Florida in
five  cancer  patients  during  1988 and 1989.  The  purpose of the study was to
determine a safe dosage for DEHOP in cancer patients,  and no drug-related  side
effects  were  observed  except for  constipation.  This led the Company and its
researchers  at the University of Florida to test DEHOP for use in treating AIDS
patients  who  suffer  from  chronic  refractory  diarrhea.   See  "--AIDS"  and
"--Gastrointestinal Disorders."

         Early studies conducted by the Company demonstrated that DEHOP may have
anti-proliferative  properties.  As a result,  the Company filed an IND in March
1996 for a Phase I clinical trial to test DEHOP in cancer  patients.  The study,
which  commenced in October 1996,  was  conducted by Dr.  George  Wilding at the
University  of Wisconsin  Comprehensive  Cancer  Center,  with  funding  under a
federal grant from the National Cancer  Institute.  The study was a dose ranging
trial conducted in cancer patients to determine  safety,  pharmacokinetics,  and
maximum tolerated dose. An adverse event was observed in this trial in 1997 at a
dose level five times higher than was used in the Phase II AIDS-related diarrhea
trial. This led to discussions with the U. S. Food and Drug  Administration (the
"FDA") to evaluate  safety data from the Phase II trial to determine  whether to
continue  development  of DEHOP for  cancer  indications  as well as for  trials
planned for other indications,  including  non-Hodgkin's lymphoma and ulcerative
colitis.  In October 1998,  the Company  announced  that an additional  Phase II
study of DEHOP would be  required,  designed to generate  additional  safety and
pharmacokinetic  data prior to commencing  pivotal  studies in  refractory  AIDS
related  diarrhea.  See "Risk  Factors  --No  Assurance  of  Successful  Product
Development or Commercialization".

         DEHOHO.  Preclinical studies have indicated that a derivative of DEHOP,
diethyldihydroxy-homospermine   ("DEHOHO")   may  be  useful  in   treatment  of
pancreatic  carcinoma.  Several  animal  studies  have  demonstrated  that  this
compound  concentrates  in the  exocrine  cells  of the  pancreas  and  after  a
relatively  short use  causes  almost  complete  atrophy of these  cells,  while
sparing the insulin producing endocrine cells.  Because the pancreatic cells are
irreversibly altered by the compound, this finding is expected to be relevant to
the treatment of pancreatic  carcinoma,  a rapid and invariably fatal neoplastic
disease.  Preclinical  IN VITRO and IN VIVO  efficacy  studies  relevant to this
indication are  anticipated to be completed by mid-year 1999,  with  preclinical
safety studies expected to commence shortly thereafter.  Similarly,  preclinical
work is planned in 1999 for two other derivative compounds,  dipropylnorspermine
("DPNSPM") and  diethyldihydroxynorspermine  ("DENOHO"),  to explore  additional
cancer indications.

AIDS

         BACKGROUND.  AIDS,  which is a disease  caused by HIV, is a devastating
viral  infection  that  destroys  the immune  system of affected  patients.  The
Centers for Disease  Control and  Prevention  ("CDC")  estimates that nearly one
million  people in the United  States and over 30 million  people  worldwide are
infected with HIV. Over 44,000 new AIDS cases were expected in the United States
in 1998, and globally there are an estimated 16,000 new cases daily.

                                        5

<PAGE>

         Disorders of the gastrointestinal tract are common in AIDS patients. It
is estimated  that between 50% and 80% of all AIDS  patients and between 20% and
30% of all HIV-positive  patients suffer from chronic diarrhea during the course
of  their  disease.  Most of  these  patients  have  periods  of  stable  weight
interspersed  with episodes of heavy diarrhea and rapid wasting that often occur
while the patient is suffering from active secondary infections.  Over time, the
patient's recovery from bouts of diarrhea is less complete,  producing long-term
loss of body cell mass. The causes of AIDS-related  diarrhea and weight loss are
not yet fully  understood,  and the condition is often  unresponsive  to medical
therapy. Of the HIV-positive  patients with chronic diarrhea,  a pathogen can be
identified as the cause in roughly 50% of the cases,  and,  among those patients
with  an  identifiable   pathogen,   approximately  50%  (or  only  25%  of  all
HIV-positive  patients  with chronic  diarrhea)  can be treated with  antibiotic
therapy. Treatment is therefore empiric and uses a combination of anti-diarrheal
agents, including opiates, loperamide, octreotide and diphenoxylate.

         DEHOP. In January 1994, the FDA allowed an  Investigator  IND submitted
by the  University of Florida to conduct  Phase I clinical  trials of DEHOP as a
possible  treatment  for chronic  AIDS-related  refractory  diarrhea.  The first
segment of the Phase I clinical trial, to determine side effects,  was completed
in June 1994. Five AIDS patients,  for whom treatments with other anti-diarrheal
medications had been unsuccessful,  received doses which were three-to five-fold
lower than those doses  previously  given to cancer patients in a prior study of
DEHOP for cancer conducted in 1989. All five patients  experienced a significant
reduction in stool volume with no measurable  adverse side effects.  An expanded
segment of the Phase I clinical trial in a total of nineteen evaluable patients,
to determine safety,  route of administration and dosage regimen,  was completed
in December 1995. Across the three dose levels tested, ten responded  positively
to the drug.  A Phase II clinical  trial of DEHOP was  conducted  on  refractory
AIDS-related  diarrhea  under a Sponsor  IND,  which was  allowed  by the FDA in
January 1996, to establish safety and appropriate  dosing regiments for use in a
future  pivotal   clinical  trial.  In  December  1997,  the  Company   reported
statistically  significant results of the Phase II multicenter clinical trial of
DEHOP.

         Overall,  the  Phase I and II  clinical  trials  demonstrated  positive
response rates of 53% and 80%, respectively,  in AIDS patients with very severe,
refractory diarrhea,  that is, diarrhea which had failed to respond to all other
approved  treatments  for two weeks prior to  initiating  treatment  with DEHOP.
Although a small number of  drug-related  adverse  events were  reported in each
study,  the  Company  believes  that the risks to patients  associated  with the
observed adverse events are outweighed by the significant anti-diarrheal benefit
of the drug  observed  in its  clinical  trials  and that  they do not  preclude
further  development  of  DEHOP  for  AIDS-related   diarrhea.  The  Company  is
continuing to evaluate the impact of safety data from its Phase I clinical trial
of DEHOP  for  cancer  on the  development  of DEHOP  for  this  indication.  As
previously  discussed,  in October 1998, the Company  announced that  additional
studies  of DEHOP  would be  required  prior to  initiating  pivotal  trials  in
AIDS-related diarrhea. If or when initiated,  these studies would be designed to
generate additional safety and pharmacokinetic data on the compound. See "Cancer
- - --DEHOP".

         HIV . The HIV-1 virus has nine known genes that contain the information
for  viral  structural,   enzymatic  and  regulatory   proteins   necessary  for
intracellular  viral  replication  and  assembly.  HIV  drugs in use  today  are
directed toward the viral enzymes,  reverse  transcriptase  and protease.  These
enzymes are necessary  for  conversion of viral RNA to DNA and assembly of viral
components into infective  virus,  respectively.  Despite the  effectiveness  of
currently  available  HIV drugs in reducing  the levels of HIV,  progress of the
disease  continues  to occur  in  treated  patients,  with  decreases  in CD4+ T
lymphocyte  levels,  the  onset  of  opportunistic   infections,   and  ultimate
progression  to  death.  Hypotheses  for the  ultimate  failure  of these  drugs
include: (i) the drugs become overwhelmed by the amount of HIV present; (ii) the
virus develops  resistance to the drugs;  and (iii) the inhibition of one or two
molecular targets (e.g. reserve  transcriptase  and/or protease) is insufficient
to  control  the  virus.  Although  treatment  with  a  combination  of  reverse
transcriptase and protease  inhibitors has been shown to reduce the level of HIV
RNA in the blood to undetectable  levels in some patients,  HIV DNA continues to
persist in the tissues of these patients. In addition,  25% of patients who have
received combination therapy with reverse  transcriptase and protease inhibitors
do not respond to the treatment,  either  because of the patient's  inability to
take  the  combination  therapy  due  to  side  effects  or the  failure  of the
combination therapy to produce an antiviral effect.

         The Company,  through its funded research at the University of Florida,
is currently  investigating  another possible  therapeutic  approach to HIV. The
viral rev gene is a regulatory gene that is required for the production of viral
structural  components by the infected  cell.  The product of the viral rev gene
combines in the  nucleus  with the viral  genetic  message,  HIV mRNA,  and with
cellular  eIF-5A,  an  initation  factor  needed  for  protein  synthesis.  This
combination  of rev,  HIV 

                                        6
<PAGE>

MRNA and  eIF-5A can then be  transported  across the  nuclear  membrane  to the
cytoplasm.  There,  the HIV genetic  message can be  translated  to HIV protein,
viral particles can assemble, burst out of the cell and infect other cells.

         The  Company  has  funded  research  at the  University  of  Florida to
investigate several proprietary analogue compounds that may alter eIF-5A in such
a way as to inhibit its combination  with the rev gene product or the ability of
the  combination  to bind to the viral  genetic  message.  One such  compound is
DENSPM,  which has been shown to remove  the  substrate  needed in an  enzymatic
reaction that converts a lysine residue on eIF-5A to hypusine.  Accordingly, the
Company believes that a reduction in hypusine will correlate with a reduction in
viral load and is planning to test this  hypothesis  in a pilot  clinical  trial
before the end of 1999. By using DENSPM to disrupt this  important  phase of the
viral  life-cycle,  the Company  believes HIV cannot  proliferate and infect new
lymphocytes.  Although  the HIV virus has a tremendous  ability to mutate,  this
approach  may  represent  an  "Achilles  heel" in the virus'  life  cycle  where
mutation plays a less important role and may therefore lead to new drugs for the
treatment of AIDS.

GASTROINTESTINAL DISORDERS

         BACKGROUND.  Ulcerative colitis is a form of inflammatory bowel disease
of unknown origin affecting approximately 500,000 Americans.  Ulcerative colitis
consists of a diffuse,  continuous,  inflammatory  process  that  almost  always
involves the rectum,  varies in its  proximal  extent,  but rarely  involves the
small  intestines.  The etiology of ulcerative  colitis remains  uncertain,  but
genetic,  infectious,   immunological,   and  psychological  factors  have  been
implicated as possible pathogenetic  mechanisms in producing the chronic mucosal
inflammatory  condition and the  ulcerative  and  hemorrhagic  conditions  which
result.   To  date  the   disease   is   treated   with   sulfasalazine,   other
5-aminosalicylic acid ("ASA") compounds and/or rectal  corticosteroids.  None of
these  treatments is totally  effective in alleviating the signs and symptoms of
ulcerative colitis.

         DEHOP.  Preclinical  investigation  with  DEHOP in  animal  models  for
inflammatory  bowel disease  (ulcerative  colitis)  indicates  that the compound
exerts  protective  and  anti-inflammatory  effects  in the mucosa of the colon.
Accordingly,  the  Company  believes  that  DEHOP,  owing  to  its  biochemical,
antimotility,  antisecretory and mucosal-protective  properties, may palliate or
attenuate colonic mucosal inflammatory infiltrates and the signs and symptoms of
mild to moderate  ulcerative colitis. To test this theory, an IND was allowed by
the Food and Drug  Administration in March 1997, whereby clinical  investigators
at the  University  of  Chicago  would  conduct a Phase I/II  clinical  trial in
patients with mild to moderate  ulcerative  colitis.  Patient enrollment in this
trial commenced in November 1997.  However, in 1998 the Company decided to delay
further  enrollment while evaluating safety data from its Phase I clinical trial
of DEHOP for cancer on the continued  development of DEHOP for this  indication,
and also in light  of  ensuing  discussions  with the FDA on  proceeding  with a
pivotal trial of DEHOP for AIDS-related diarrhea.. See "--Cancer --DEHOP".

         PCA. The Company has  identified a metal  chelator,  pyrrole-carboxylic
acid  ("PCA"),  formerly  known as JM-27,  which has been  encouraging  in early
preclinical studies. In two different models of ulcerative colitis, PCA has been
shown  to  have a  favorable  impact  on the  inflammation  of the  colon.  This
beneficial  effect  was  reversed  when  PCA  was  complexed  with  iron  before
administration,  affirming the importance of the actual chelator capacity of the
compound in exerting  its  protective  effect.  The Company  believes  that iron
present in the inflamed bowel  facilitates the production of free radicals which
amplify the  inflammatory  response and that the resultant  oxidative stress may
contribute  to the high  incidence  of colon  carcinoma in these  patients.  The
Company also  believes that the local use of iron  chelators may  simultaneously
eliminate the free iron catalyst and scavenge free radicals,  thereby minimizing
the oxidative damage to the intestinal lining.

OTHER DISEASE AREAS

         PSORIASIS

         DENSPM. The Company believes that DENSPM may have potential application
for the treatment of psoriasis.  Patients with psoriasis have been found to have
increased local ODC activity,  elevated systemic  polyamine levels and increased
urinary polyamine excretion.  Experimental studies conducted ten years ago using
various   models   of  mouse   skin   have   shown   that   the  ODC   inhibitor
difluoromethylornithine   ("DFMO"),   administered  systemically  or  topically,
prevented  polyamine  accumulation  and  subsequently  inhibited  tissue growth,
indicating the potential use of DFMO in the treatment

                                       7

<PAGE>

of  hyperproliferating  disorders of human skin.  Seven of ten patients  treated
topically  with DFMO for  psoriasis  in clinical  studies  experienced  moderate
improvement. DFMO significantly reduced putrescine and spermidine concentrations
of the skin in these patients.  However,  the overall  clinical  efficacy of the
DFMO  treatment  has been proven to be  marginal,  partly  attributable  to poor
permeability into human skin. Accordingly, DFMO has not gained a foothold in the
treatment of psoriasis.  DENSPM, however, has been shown to penetrate mouse skin
and to have cytostatic properties, and Company-sponsored  preclinical studies of
DENSPM  as a  possible  treatment  for  psoriasis  have  been  conducted  at the
University of Florida.  In addition,  the Company has completed  skin safety and
hypersensitivity studies in animals. The Company expects that an IND application
will be filed in 1999 for testing  DENSPM  against  psoriasis in human  clinical
trials.

         IRON OVERLOAD

         HBED. In March 1998,  the National  Institutes of Health (NIH) issued a
statement  on  research at the  University  of Florida  with the metal  chelator
compound monosodium  hydroxybenzylethylenediamine  diacetic acid ("HBED").  When
tested in rats and  primates  overloaded  with iron,  HBED removed up to 3 times
more iron than desferrioxamine ("DFO") by subcutaneous administration. The study
was funded in part by the  National  Institute  of Diabetes  and  Digestive  and
Kidney  Diseases  and  appeared  in the  February  15, 1998 issue of the science
journal Blood.

         The Company  believes that HBED presents a promising  drug  development
opportunity,  possibly  leading to a more effective  treatment that is easier to
administer for patients with iron overload. For example, the currently available
treatment  for excess iron levels  found in disorders  such as Cooley's  anemia,
sickle cell anemia and hemochromatosis is a nine to twelve-hour  infusion of DFO
at  least 5 days  per  week,  which  is  difficult  for  patients  to  tolerate.
Preclinical testing of HBED is continuing at the University of Florida.  Testing
in human  subjects is  expected to begin after the filing of a Physician  IND in
1999.

         DFT ANALOGUE In January 1999, Dr. Bergeron and his collaborators at the
University of Florida reported progress in identifying and structuring an orally
effective iron clearing agent with a more acceptable  level of toxicity than the
commercially  available DFO.  Results of their work were reported in the Journal
of Medicinal Chemistry, which included discussion of screening several compounds
in rodent and  primate  models.  The  Company  believes  that one such  analogue
compound,   desazadesmethyldesferrithiocin   ("DFT")  exhibits  sufficient  iron
chelation  properties  and an acceptable  safety profile in the animal models to
warrant further  investigation in humans.  An IND is expected to be prepared and
filed to begin a pilot clinical trial in the year 2000.

STRATEGIC ALLIANCES

         WARNER-LAMBERT AGREEMENT

         In May 1993,  the Company  entered  into a  sublicense  agreement  with
Warner-Lambert,  with respect to DENSPM.  The  agreement  grants  Warner-Lambert
exclusive  worldwide rights  (excluding  Japan) to manufacture and market DENSPM
for all cancer indications in exchange for certain license fees, advance royalty
payments and development  milestone payments, of which Warner-Lambert has paid a
total of $2.9  million  to date.  Warner-Lambert  will  also pay the  Company  a
royalty on all sales of products incorporating this compound and indication. The
agreement  provides for  additional  payments to the Company upon  completion of
Phase II clinical trials,  filing of a new drug application  ("NDA") for DENSPM,
and approval of the NDA for commercial sale of DENSPM.  The Company's  rights to
receive such payments are dependent on the  achievement  of these  milestones by
Warner-Lambert  and are not within the control of the  Company.  Pursuant to the
agreement,  the Company was responsible  for conducting  Phase I clinical trials
for DENSPM,  and  Warner-Lambert  is  responsible  for  completing all remaining
clinical trials at its expense.  Warner-Lambert  has a right of first refusal to
acquire the rights to DENSPM for other  indications  should the Company elect to
sublicense the  development of DENSPM for such  indications.  If  Warner-Lambert
elects to  subcontract  any portion of the  manufacturing  of the  compound to a
third party,  the Company has the right to match such third  party's offer under
certain circumstances.

                                       8

<PAGE>

         The    Warner-Lambert    sublicense    agreement    terminates   on   a
country-by-country   basis,  upon  the  later  of  (i)  the  expiration  of  the
last-to-expire  patent in such country or (ii) ten years after the  commencement
of marketing of a product in that country.

         In June 1996, Warner-Lambert acquired a 12-month option to other linear
polyamines  for use in cancer  indications  in exchange for an early  payment of
$500,000,  one half of the milestone  payment due upon completion of the Phase I
clinical study of DENSPM. In December 1996,  Warner-Lambert agreed that SunPharm
had met its  obligations  under the  sublicense  agreement for completion of the
Phase I study, and the IND was transferred to Warner-Lambert in exchange for the
remaining portion of the $1,000,000 milestone payment.

         NIPPON KAYAKU AGREEMENT

         In February  1994,  the Company  entered into an agreement  with Nippon
Kayaku with respect to the Japanese  marketing and development  rights to DENSPM
for cancer  indications.  Nippon Kayaku has committed to make staged payments to
the  Company  for  research  and  development  milestones,  of which it has paid
$225,000 to date, together with royalties on all sales of products incorporating
DENSPM.  The Nippon Kayaku  agreement  provides for  additional  payments to the
Company upon commencement of Phase I and Phase II clinical trials in Japan, upon
the submission of, and upon the approval of, an NDA in Japan, and upon the later
to occur of product pricing  approval or patent approval in Japan. The Company's
rights to receive  additional  payments  from Nippon Kayaku are dependent on the
achievement  of these  milestones and are not within the control of the Company.
Nippon Kayaku is  responsible  for completing  all necessary  Japanese  clinical
trials and associated  regulatory  submissions  at its expense.  The Company has
retained  the  right to  supply  Nippon  Kayaku  with  all of its  bulk  product
requirements for marketing DENSPM in Japan.

LICENSED TECHNOLOGY AND SPONSORED RESEARCH

         The Company  holds an  exclusive  worldwide  license to the  commercial
rights to polyamine  compounds  and various iron  chelators and their uses under
more than 45 issued  United  States and  foreign  patents and  numerous  pending
patent applications held by the University of Florida Research Foundation,  Inc.
("UFRFI"),  the technology transfer subsidiary of the University of Florida. The
agreements pursuant to which the Company has the rights to these patents require
the  Company  to file and  prosecute  the  patents  relating  to the  technology
licensed to the Company,  the costs of which are paid by the  Company.  Further,
the Company must take all necessary  steps to defend such patent rights.  If the
Company fails to take any such action, UFRFI has the right to defend such rights
at its own expense.

         No assurance can be given that any existing patent application,  or any
future patent applications,  will be issued or that any patents, if issued, will
provide the Company with adequate patent  protection with respect to the covered
products,  their uses, technology or processes.  In addition,  under its license
with UFRFI,  the Company is required to meet  specified  milestone and diligence
requirements to retain its license of these patents.

         LICENSE AGREEMENT

         The Company and UFRFI  entered  into a Patent  License  Agreement  with
Research Component (the "1991 License  Agreement") in December 1991, (as amended
from time to time),  pursuant to which UFRFI  granted to the Company a worldwide
exclusive  license to its rights under certain  patents and patent  applications
relating to polyamine and metal chelator  technology  invented by Dr.  Bergeron.
The Company  has rights  under the 1991  License  Agreement  to all  indications
currently under development and, with respect to all patent  applications  filed
for inventions  discovered during the term of the Company's  sponsored  research
agreement,  the Company  obtains rights for all  indications and uses for humans
and animals.  The Company's license is subject to certain  diligence  milestones
related to product  development and regulatory  applications,  product marketing
and certain other matters. UFRFI may terminate the 1991 License Agreement if the
Company  fails to meet  certain of these  milestones;  provided,  however,  such
termination  will be limited to a particular  compound if the default is related
to a particular compound only. UFRFI may terminate the 1991 License Agreement in
its  entirety if the  Company  defaults  in its  payment  obligations  under the
sponsored research agreement.

                                       9

<PAGE>

         Under the 1991  License  Agreement,  the  Company is  obligated  to pay
royalties on sales of products,  subject to certain annual minimum royalties and
reimbursement  of patent  costs  incurred  by the  Foundation.  These  royalties
include a royalty on net sales of the Company's products of between five and six
percent  and a royalty of 28 percent  (increasing  to 35 percent  under  certain
circumstances)  on  royalty  and  license  payments  made to the  Company by its
sublicensees.  Payments to UFRFI on sales of products  by  sublicensees  may not
however,  be less than two percent of sublicensee sales. The Company is required
to pay a minimum annual royalty of $100,000 on each anniversary date of the 1991
License Agreement, which is credited against royalties and research payments due
under the  Company's  Corporate  Research  Agreement  with UFRFI,  as  discussed
herein.

         Under the 1991 License  Agreement,  as amended,  the Company has issued
UFRFI a total of 342,760  shares of Common  Stock,  which  shares are subject to
certain  limitations  on sales under an  agreement  with the  Company.  The 1991
License  Agreement  terminates  when the last  patent  licensed  to the  Company
expires or December 9, 2011, whichever is later.

         RESEARCH AGREEMENT

         The Company and UFRFI also entered into a Corporate  Research Agreement
in December 1991 (as amended from time to time) which  provides that the Company
will fund the research and development work of Dr.  Bergeron's  laboratory for a
period not less than two years as  extended  each  December 31 at an annual cost
(including  direct and  indirect  costs) of  $875,000.  The Company has made all
required  payments  under the Corporate  Research  Agreement to date.  Under the
Corporate  Research  Agreement,  any new  invention  covered by the 1991 License
Agreement  will be licensed to the Company on the same terms as the 1991 License
Agreement without any additional license fees to UFRFI.

         The Company has a close working  relationship  with Dr. Bergeron at the
University of Florida, who is engaged as a consultant to the Company. Management
of SunPharm and the  scientists at the  University of Florida meet  regularly to
review  the  progress  and  direction  of the  University's  efforts  under  the
Corporate  Research  Agreement.  A total of 26 scientists and technicians at the
University of Florida are working on the Company's products under Dr. Bergeron's
supervision,  seven of whom have Ph.D.  degrees.  By utilizing  the  significant
resources  of  the  University  of  Florida,   including  its   state-of-the-art
equipment,  its laboratory  facilities for  synthesis,  analysis,  pharmacology,
toxicology,  IN  VITRO  and  IN  VIVO  studies,  and  its  clinical  and  animal
facilities,  the Company believes that it has accomplished significantly more in
the development of its licensed  compounds than it would have been able to do on
its own, without substantially greater need for capital.

         The Company has  incurred  costs of research and  development  totaling
approximately $2,228,000, $2,417,000 and $2,510,000 for the years ended December
31, 1996,  1997 and 1998,  respectively.  The Company has incurred  research and
development costs of approximately $12,496,000 for the period from the Company's
inception through December 31, 1998.

PATENTS AND PROPRIETARY TECHNOLOGY

         Subject  to a  nonexclusive  statutory  license  to the  United  States
government,  the  Company is the  exclusive  licensee  of over 45 issued  United
States and foreign patents and numerous pending patent applications. The Company
is required to meet specified  milestone and diligence  requirements in order to
retain its license to the patents and other  proprietary  rights  licensed  from
UFRFI.  No  assurance  can be given that the Company  will  satisfy any of these
requirements.

         The Company's  success will depend,  in part, on the validity and scope
of the patents and patent  applications  licensed from UFRFI, and on its ability
to operate without infringing on the proprietary rights of others. Other parties
have filed patent applications,  and some patents may have been or may be issued
in the therapeutic areas in which the Company is developing products.  If any of
the  Company's  proprietary  technology in these areas were to conflict with the
rights of others,  the Company's  ability to  commercialize  products using such
technologies could be materially and adversely affected.

         The patent  position of  pharmaceutical  companies  generally is highly
uncertain  and involves  complex  legal and factual  questions.  There can be no
assurance  that  the  patents  licensed  from  UFRFI  will  provide  substantial
protection or

                                       10

<PAGE>

commercial benefit to the Company,  will afford the Company adequate  protection
from competing  products,  will not be challenged or declared  invalid,  or that
additional  related  United  States  or  foreign  patents  will be  issued,  the
occurrence of any of which could have a material adverse effect on the Company's
operations.  While the United States government could use its rights as licensee
of UFRFI's  patents to increase the supply of products  based on such patents or
to reduce the cost of treatment  with such  products,  the Company is unaware of
any instance in which federal  authorities  have  exercised  such rights in that
manner.

         Certain proprietary trade secrets and unpatented know-how are important
to the  Company.  There can be no  assurance  that others may not  independently
develop the same or similar technologies.  It is the Company's current policy to
require all  employees and  consultants  to execute  confidentiality  agreements
protecting the Company's  proprietary  information.  In addition,  the Company's
sponsored   research   agreement  with  the   University  of  Florida   requires
confidential  treatment by the  University  of Florida and its  employees of the
proprietary  information  owned by or licensed to the  Company.  Notwithstanding
such  agreements,  however,  third parties  nonetheless  may gain access to such
information.

         There  has  been  significant   litigation  in  the  biotechnology  and
pharmaceutical  industry regarding patents and other proprietary  rights. If the
Company  became  involved  in  similar  litigation  regarding  its  intellectual
property rights, the cost of such litigation could be substantial.

GOVERNMENT REGULATION

         In the  United  States,  the  Company's  polyamine  analogue  and  iron
chelator products are regulated under the Federal Food, Drug and Cosmetic Act by
the FDA's Center for Drug  Evaluation and Research.  The steps required before a
pharmaceutical  product  may  be  marketed  in the  United  States  include  (i)
preclinical  laboratory  evaluation of product  chemistry and animal  studies to
assess  the  safety  and  efficacy  of the  product  and its  formulation;  (ii)
submission to the FDA of an IND, which  includes the results of the  preclinical
studies and,  unless the FDA objects,  becomes  effective 30 days  following its
filing  with the FDA (and which must  become  effective  before  human  clinical
trials may commence);  (iii) adequate and well-controlled  human clinical trials
to  establish  the  safety and  efficacy  of the drug (and  which  provide  data
satisfying FDA data integrity standards);  (iv) submission of an NDA to the FDA;
and (v) FDA review and  subsequent  approval of the NDA prior to any  commercial
sale or shipment of the drug.  In addition to  obtaining  FDA  approval for each
product,  each domestic drug  manufacturing  facility is subject to  inspections
every  two  years by the FDA and must  comply  with the  FDA's  Good  Laboratory
Practices and Good Manufacturing Practices.

         In the United States, human clinical trial programs generally involve a
three-phase  process.  Typically,  Phase  I  trials  are  conducted  in  healthy
volunteers  to determine the early  side-effect  profile and the pattern of drug
distribution and metabolism. Phase II trials are conducted in groups of patients
afflicted with the target disease to provide sufficient dose-response and safety
data as required by the FDA. If Phase II evaluations indicate that a product has
shown   indications   of   potential   effectiveness   and  has  an   acceptable
benefit-to-risk  profile,  Phase  III  trials  are  undertaken  to  conclusively
demonstrate  clinical  efficacy  and safety  within an  expanded  population  at
multiple clinical study sites.  Sometimes,  the FDA requires Phase IV studies to
track patients after a product is approved for commercial  sale to identify side
effects that may occur in a relatively small percentage of patients.

         In the case of  drugs  for  cancer,  AIDS  and  other  life-threatening
diseases, the initial human testing is generally done in patients rather than in
healthy volunteers. Because these patients are already afflicted with the target
disease,  these studies may provide results  traditionally  obtained in Phase II
studies.  Similarly,  Phase  II  studies  may be  expanded  to  provide  results
generally  obtained in Phase III studies  (such  expanded  studies are generally
referred to as Phase II/III  studies).  As a result,  subject to  obtaining  the
necessary FDA approvals,  the clinical trial process for cancer,  AIDS and other
life-threatening  diseases may be shortened in  comparison  with the process for
non-life-threatening  diseases. No assurance can be given, however, that the FDA
will grant such approvals.

         The Company will also be subject to widely varying foreign  regulations
governing clinical trials and pharmaceutical  sales. Whether or not FDA approval
has  been  obtained,   approval  of  a  product  by  the  comparable  regulatory
authorities  of foreign  countries  must be obtained  prior to  commencement  of
marketing  the product in those  countries.  The  approval  process  varies from
country to country, the time may be shorter or longer than that required for FDA
approval,  and  additional  clinical  data  may be  required  by the  regulatory
authorities of other nations. The Company intends, where

                                       11

<PAGE>

applicable and to the extent possible, to rely on licensees to obtain regulatory
approval for marketing the Company's products in foreign countries.

         From the time an NDA is filed,  regulatory review and approval of a new
pharmaceutical  product may take up to two years for  life-threatening  diseases
and longer for non-life-threatening diseases, and may involve the expenditure of
substantial  resources.  Approval depends on a number of factors,  including the
severity of the disease in question, the availability of alternative treatments,
and the risks and benefits demonstrated in clinical trials.

         During the development phase of its products or thereafter, the Company
may file for Treatment IND status under provisions of the IND regulations. These
regulations apply to products for serious or  life-threatening  diseases and are
intended to  facilitate  the  availability  of new products to  desperately  ill
patients  after  clinical  trials have shown  evidence of  efficacy,  but before
general marketing approval has been granted by the FDA.

         The  Company  may  also  seek  designation  for  its  products,   where
applicable,  as "Orphan  Drugs" under the Orphan Drug Act 1983.  The Orphan Drug
Act generally provides incentives for the development of drugs to treat diseases
affecting fewer than 200,000  persons in the United States.  It is the Company's
intention to seek this designation for DEHOP for AIDS-related  diarrhea.  A drug
that receives  Orphan Drug  designation  and is the first product to receive FDA
marketing  approval for its product claim is entitled to a seven-year  exclusive
marketing  period in the United States for that claim for the product.  However,
the  Company  believes  that its patent  position on this  compound  will afford
exclusivity for a longer period than seven years.

COMPETITION

         The Company has numerous  competitors,  including major  pharmaceutical
and chemical companies,  specialized biotechnology firms, universities and other
research institutions.  These competitors may succeed in developing technologies
and products that are more effective  than those being  developed by the Company
or which  would  render the  Company's  technology  and  products  obsolete  and
noncompetitive.  Many of these competitors have substantially  greater financial
and technical  resources and  production  and  marketing  capabilities  than the
Company.  In addition,  many of the  Company's  competitors  have  significantly
greater  experience  than the Company in preclinical  testing and human clinical
trials of new or improved pharmaceutical products and in obtaining FDA and other
regulatory approvals of products for use in health care.

         The Company is aware of various products which are under development or
manufactured  and  marketed  by  competitors.  These  products  are used for the
prevention,  diagnosis or treatment  of certain  diseases  which the Company has
targeted  for  its  own  product  development,  some of  which  use  therapeutic
approaches that would compete with certain of the Company's  potential products.
For  example,  the Company  believes  that  Novartis  AG, a major  international
pharmaceutical  company, is developing a product which targets SAMDC, one of the
two enzymes  responsible  for the  biosynthesis  of  polyamines  in human cells.
Novartis  AG is  also  marketing  a  natural  form  of  DFO  for  iron  overload
dysfunctions  ("DesferralR"),  and has significantly  greater resources than the
Company. There can be no assurance,  however, of the ultimate success or failure
of Novartis AG in these efforts.

         The  Company has not to date  managed a set of  clinical  trials to FDA
product  approval.   Accordingly,  the  Company's  competitors  may  succeed  in
obtaining FDA approval for products  more rapidly than the Company,  which could
adversely  affect  the  Company's  ability  to  further  develop  and market its
products. If the Company commences significant commercial sales of its products,
it will also be competing with respect to manufacturing efficiency and marketing
capabilities, areas in which the Company has limited or no experience.

EMPLOYEES

         As of March 30, 1999,  the Company had six full-time  employees and one
part-time  employee.  All of the Company's  preclinical  and clinical  tests are
subcontracted   and  performed  at  the   University  of  Florida  or  at  other
collaborative  entities.  Although  the Company has  obtained a  $1,000,000  key
person life insurance policy on the life of

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<PAGE>

Stefan  Borg,  of which the  Company  is the sole  beneficiary,  the loss of Mr.
Borg's  services  could  nevertheless  have a  material  adverse  effect  on the
Company.

RISK FACTORS

         DEVELOPMENT STAGE COMPANY

         The Company is in the  development  stage and has realized to date only
limited   revenues,   all  of  which  have  been  derived  from   payments  from
Warner-Lambert and Nippon Kayaku,  principally in connection with achievement of
identified research milestones with respect to DENSPM. The Company has generated
no  revenues  to date from  product  sales,  and it does not expect to  generate
revenue from product sales for at least several years.  The Company has incurred
net losses since  commencement  of its  operations and it expects to continue to
incur losses for the  foreseeable  future.  As of December 31, 1998, the Company
had an accumulated deficit of $19.3 million. Moreover, there can be no assurance
that the Company will  successfully  complete the transition  from a development
company to successful operations and/or profitability.

         NO ASSURANCE OF SUCCESSFUL PRODUCT DEVELOPMENT OR COMMERCIALIZATION

         Since its inception, the Company has devoted its efforts exclusively to
the  research  and  development  of  potential   pharmaceutical  products  based
primarily upon its licensed polyamine analogue and metal chelator  technologies.
While  two of these  analogues,  DEHOP and  DENSPM,  are  currently  in Phase II
clinical  trials,  such  trials are  typically  not  sufficient  to  demonstrate
conclusively the safety or efficacy of the products under  investigation,  often
requiring that  substantial  further  clinical trials be successfully  completed
before such  products  may be approved  for  commercialization.  There can be no
assurance  that DEHOP or DENSPM,  or any other  potential  product  currently in
development or to be developed in the future, will prove to be safe or effective
in clinical trials, meet applicable  regulatory  standards,  be capable of being
produced  in  commercial  quantities  at  acceptable  cost,  or be  successfully
marketed. See "--Government Regulation; No Assurance of Regulatory Approval."

         NEED FOR ADDITIONAL FINANCING

         The Company has expended and will continue to expend  substantial funds
to continue the research and  development of its products,  conduct  preclinical
and clinical trials,  establish clinical and  commercial-scale  manufacturing in
its own facilities or in the facilities of others,  and seek corporate  partners
for the  marketing of its products.  The amount and timing of such  expenditures
are subject to a number of factors.  Based on its current  operating  plan,  the
Company  anticipates that its available  capital  resources at December 31, 1998
will be adequate to satisfy  its capital  needs into the third  quarter of 1999,
but will not be  sufficient  to fund the  Company's  operations  to the point of
introduction  of a  commercially  successful  product.  The Company's  rights to
receive  payments from  Warner-Lambert  and Nippon Kayaku are dependent upon the
achievement  of  certain   development  and   commercialization   milestones  by
Warner-Lambert and Nippon Kayaku,  respectively,  and are not within the control
of the Company.  Further,  the capability of  Warner-Lambert or Nippon Kayaku to
achieve such milestones depends upon the availability  and/or  prioritization of
sufficient  funding to support necessary testing of DENSPM,  the availability of
trained and experienced staff for testing and the results of such testing, among
other factors.  As a result,  no assurance can be made that such milestones will
be  achieved  or  that  such  payments  will be  received  by the  Company.  See
"--Strategic Alliances."

         The Company will require  significant  levels of additional  capital in
the  future,  which  it  intends  to raise  through  additional  equity  or debt
financings,  additional  arrangements  with  corporate  partners,  or from other
sources.  No assurance can be given that the  necessary  funds will be available
for the Company to finance its  development  on  acceptable  terms or at all. If
adequate  funds are not  available  from  operations  or  additional  sources of
financing,  the Company's business and/or its market valuation may be materially
and adversely  affected.  See "Item 6.  Management's  Discussion and Analysis of
Financial Condition and Results of Operations."

                                       13

<PAGE>

         GOVERNMENT REGULATION; NO ASSURANCE OF REGULATORY APPROVAL

         Research,   preclinical   development,   clinical   trials,   and   the
manufacturing  and marketing of therapeutic  products  under  development by the
Company  are  subject  to  extensive  and  rigorous   regulation  by  government
authorities in the United States and other countries, including, but not limited
to, the FDA. In order to obtain approval to commercialize a product, the Company
must  demonstrate to the  satisfaction of the FDA and comparable  authorities in
other  countries  that such product is safe and  effective for its intended uses
and that the Company is capable of  manufacturing  the product to the applicable
standards.  In the  United  States,  this  requires  that  the  product  undergo
extensive preclinical testing, that the Company file an IND application with the
FDA prior to commencing a series of human clinical trials,  and that the Company
file an NDA requesting FDA approval for commercial marketing of the product.

         The approval process for the Company's product  candidates is likely to
take  several  years  and  will  involve  significant   expenditures  for  which
additional  financing  will be required.  The cost to the Company of  conducting
human clinical trials for any potential product can vary dramatically based on a
number  of  factors,  including  the order and  timing of  clinical  indications
pursued  and the extent of  development  and  financial  support,  if any,  from
corporate partners.  Although Phase I and Phase II clinical trials of DENSPM and
DEHOP have been or are  presently  being  conducted,  further  clinical  trials,
including large,  time-consuming and more costly Phase II and Phase III clinical
trials,  will be  required  to  demonstrate  the  safety and  efficacy  of these
compounds.  There can be no  assurance  that the  Company  will have  sufficient
resources to complete the required regulatory review process or that the Company
could survive the inability to obtain,  or delays in obtaining,  such approvals.
Approvals  that may be granted  will be subject to continual  review,  and later
discovery of  previously  unknown  problems may result in withdrawal of products
from the market.  Failure to comply with the applicable regulatory  requirements
can, among other things,  result in fines,  suspensions of regulatory approvals,
product  recalls,  operating  restrictions  and criminal  prosecution.  Further,
additional  government regulation may be established that could prevent or delay
regulatory  approval of and/or limit federal  government  reimbursement  for the
Company's products. See "--Government Regulation."

         DEPENDENCE ON EXCLUSIVE LICENSE

         All of the Company's development and  commercialization  rights for its
products  are  derived  from its  license  agreement  with the  Foundation.  The
Company's  rights under the license  agreement are subject to early  termination
under  certain  circumstances,  including  failure  to pay  royalties  or  other
material  breach by the  Company,  bankruptcy  of the  Company or failure by the
Company to carry on its  business,  failure to commence  marketing of a licensed
product  within six months of approval in any  specific  market,  and failure to
comply with the terms of the Company's  sponsored  research  agreement  with the
University  of Florida,  among others.  In the event that the license  agreement
terminates for any reason,  the Company's rights to manufacture and market DEHOP
and DENSPM and its other  potential  products would  terminate.  See "--Licensed
Technology and Sponsored Research."

         LIMITED  PERSONNEL;   RELIANCE  ON  STRATEGIC  ALLIANCES;  RELIANCE  ON
         COLLABORATIVE ARRANGEMENTS FOR RESEARCH AND DEVELOPMENT

         Given that  SunPharm  currently  has six  full-time  employees  and one
part-time employee,  the Company is substantially  dependent on third parties to
conduct  research and  development,  to conduct clinical trials of its potential
products, and to manufacture DEHOP, DENSPM and other compounds for such research
and  development.   See  "--Licensed  Technology  and  Sponsored  Research"  and
"--Strategic Alliances."

         The Company is dependent on the  University of Florida and Dr.  Raymond
Bergeron, the inventor of the Company's technology, with respect to all research
and a large  portion  of the  early  preclinical  development  of its  potential
products.  The Company has no control over the facilities where the research and
development work is being performed or over the personnel  performing such work.
If the University of Florida  breaches its obligations  under its agreement with
the Company,  the Company's  remedies may be limited by applicable law affecting
actions against state agencies.

                                       14

<PAGE>

         The  Company   benefits   significantly   from  and  is   dependent  on
collaborative  arrangements  with the  University  of Florida and Dr.  Bergeron.
Although the Company believes that its relationships  with its collaborators are
good,  there can be no  assurance  that the  Company's  relationships  with such
institutions  and  individuals  will continue.  The loss of these  relationships
would significantly increase the Company's expenses and could have a substantial
negative effect on the Company's ability to attain its long-range objectives. In
addition,  the loss of Dr.  Bergeron's  services  could have a material  adverse
effect on the Company.

         The Company is dependent on strategic alliances with Warner-Lambert and
Nippon Kayaku with respect to the development and  commercialization  of DENSPM,
and  expects to rely on future  strategic  alliances  with other  pharmaceutical
companies  with  respect  to other  potential  products.  Although  the  Company
believes that  Warner-Lambert,  Nippon Kayaku and any future strategic  alliance
partners have or will have an economic  motivation to develop and  commercialize
such  products,  the  amount  and  timing of  resources  to be  devoted to these
activities  are not within the control of the Company and will be subject to the
priorities of such strategic  alliance  partners in allocating  these resources,
which  may  not be  consistent  with  the  best  interests  of the  Company.  No
assurances can be given that the Company's  agreements with  Warner-Lambert  and
Nippon Kayaku,  or with any other  strategic  alliances the Company may enter in
the future, will result in the successful  development or  commercialization  of
DENSPM or other potential  products,  or that any such agreements will result in
any significant revenues,  profits or cost savings to the Company.  Furthermore,
no  assurances  can be given that the Company  will be able to enter into future
strategic  alliance  agreements on favorable  terms. In addition,  the Company's
strategic  alliance  partners or their  affiliates  may be pursuing  alternative
products or  technologies  which may compete  with the  Company's  products  and
technologies. See "--Strategic Alliances."

         UNCERTAINTIES AS TO PATENTS AND PROPRIETARY TECHNOLOGIES

         Subject  to a  nonexclusive  statutory  license  to the  United  States
government,  the Company is the exclusive licensee of more than 45 issued United
States and foreign patents and numerous pending patent applications. The Company
is required to meet specified  milestone and diligence  requirements in order to
retain its license to the patents and other proprietary rights licensed from the
Foundation. No assurance can be given that the Company will satisfy any of these
requirements.

         The patent  position of  pharmaceutical  companies  generally is highly
uncertain  and involves  complex  legal and factual  questions.  There can be no
assurance that the patents licensed from the Foundation will provide substantial
protection or  commercial  benefit to the Company,  afford the Company  adequate
protection from competing products,  or not be challenged or declared invalid or
that  additional  related United States or foreign  patents will be issued,  the
occurrence of any of which could have a material adverse effect on the Company's
operations. The United States government could use its rights as licensee of the
Foundation's patents to increase the supply of products based on such patents or
to reduce the cost of treatment with such products.

         Certain proprietary trade secrets and unpatented know-how are important
to the  Company.  There can be no  assurance  that others may not  independently
develop the same or similar  technologies.  Although the Company has taken steps
to protect its trade secrets and unpatented know-how,  third parties nonetheless
may gain access to such information.

         There  has  been  significant   litigation  in  the  biotechnology  and
pharmaceutical  industry regarding patents and other proprietary  rights. If the
Company  became  involved  in  similar  litigation  regarding  its  intellectual
property  rights,  the  cost  of  such  litigation  could  be  substantial.  See
"--Patents and Proprietary Technology."

                                       15

<PAGE>

         UNCERTAINTY   OF  HEALTH   CARE   REFORM   MEASURES   AND  THIRD  PARTY
         REIMBURSEMENT

         The Company's  ability to successfully  commercialize  its products may
depend  in part on the  extent  to  which  reimbursement  for the  costs of such
products  and  related  treatments  will be  available  from  government  health
administration   authorities,   private  health  coverage   insurers  and  other
organizations.  While the Company cannot predict whether any future  legislative
or  regulatory  proposals to reform the health care system may be adopted,  such
proposals could have a material adverse effect on the Company's ability to raise
capital.  Any such reform  measures,  if  adopted,  could  adversely  affect the
pricing  of  therapeutic  products  in  the  United  States  or  the  amount  of
reimbursement  available from United States governmental agencies or third party
insurers  and  could  materially   adversely  affect  the  Company  in  general.
Furthermore,  the  Company's  ability to  commercialize  its  potential  product
portfolio  may be adversely  affected to the extent that such  proposals  have a
material adverse effect on the business,  financial  condition and profitability
of other  companies  that  are  prospective  collaborators  for  certain  of the
Company's proposed products.

         In both domestic and foreign markets,  sales of the Company's  proposed
products  will  depend  in  part  on  the  availability  of  reimbursement  from
third-party payors such as government health administration authorities, private
health insurers and other  organizations.  Third-party  payors are  increasingly
challenging the price and cost  effectiveness  of medical products and services.
Significant  uncertainty exists as to the reimbursement status of newly approved
health care  products.  There can be no assurance  that the  Company's  proposed
products  will  be  considered  cost  effective  or  that  adequate  third-party
reimbursement  will be available to enable the Company to maintain  price levels
sufficient  to  realize  an  appropriate  return on its  investment  in  product
development.    Legislation   and   regulations   affecting   the   pricing   of
pharmaceuticals  may change  before any of the Company's  proposed  products are
approved  for  marketing.  Adoption of such  legislation  or  regulations  could
further limit reimbursement for medical products and services. See "--Government
Regulation."

         PRODUCT LIABILITY EXPOSURE; LIMITED INSURANCE COVERAGE

         The testing,  marketing and sale of  pharmaceutical  products entails a
risk of product liability claims by consumers and others, and such claims may be
asserted against the Company.  The Company  currently  maintains $2.0 million of
product liability  insurance  coverage for clinical trials currently underway or
expected to commence in 1999. There can be no assurance that the Company will be
able to obtain additional insurance at a reasonable cost sufficient to cover all
possible  liabilities.  In the  event of a  successful  product  liability  suit
against  the  Company,  insufficient  insurance  coverage  could have a material
adverse effect on the Company. Further, the Company is required to indemnify the
University  of Florida and its  trustees,  officers,  employees  and  affiliates
against claims  resulting from the manufacture or sale of products  derived from
its compounds and to have product  liability  coverage  naming the University of
Florida as an additional insured for such risks.

         LACK OF MANUFACTURING EXPERIENCE OR FACILITIES

         The Company  currently  contracts with third parties for the production
of compounds in limited  quantities for its  preclinical and clinical trials and
currently  does not possess the staff or  facilities  necessary  to  manufacture
products in  commercial  quantities.  The Company has entered  into  agreements,
however,  for the  production  of  clinical-scale  quantities of its products by
third party  contractors  which it believes  capable of supplying its short-term
requirements. There can be no assurance that the polyamine analogue compounds or
iron chelators can be  manufactured by the Company or its suppliers at a cost or
in quantities necessary to make such compounds commercially viable products. The
Company  also may  encounter  significant  delays  in  obtaining  supplies  from
third-party  manufacturers or experience  interruptions in its supplies.  If the
Company is unable to obtain adequate supplies,  its business would be materially
adversely affected.

         RELIANCE ON FOUNDER AND INVENTOR

         The Company is highly dependent on Stefan Borg, its founder,  President
and Chief Executive  Officer,  and on Dr. Raymond Bergeron,  the inventor of the
Company's  polyamine  analogues  and  metal  chelators.  See  "--Employees"  and
"Licensed Technology and Sponsored Research --Research Agreement".

                                       16

<PAGE>

         COMPETITION

         The Company has numerous  competitors,  including major  pharmaceutical
and chemical companies,  specialized biotechnology firms, universities and other
research  institutions.  The competitors may succeed in developing  technologies
and products that are more effective  than those being  developed by the Company
or which  would  render the  Company's  technology  and  products  obsolete  and
noncompetitive.  Many of these competitors have substantially  greater financial
and technical  resources and  production  and  marketing  capabilities  than the
Company.  In addition,  many of the  Company's  competitors  have  significantly
greater  experience  than the Company in preclinical  testing and human clinical
trials of new or improved pharmaceutical products and in obtaining FDA and other
regulatory approvals of products for use in health care.

         YEAR 2000 ISSUES

         The  Company  has   undertaken  an  assessment  of  its  financial  and
operational  systems to ensure  their  Year 2000  compliance.  Year 2000  issues
result from the inability of certain computer programs or computerized equipment
to accurately  calculate,  store or use a date  subsequent to December 31, 1999.
Typically,  the year 2000 may be  represented  or  interpreted as the year 1900.
This could result in a system failure or miscalculations  causing disruptions of
operations,  including,  among other  things,  a temporary  inability to process
transactions, send invoices or engage in similar normal business.

         Based on its  review to date and  other  preliminary  information,  the
Company does not anticipate that it will incur any significant costs relating to
remediation of Year 2000 issues. The Company believes that the potential impact,
if any,  of its  systems  not being  Year 2000  compliant  should not impact the
Company's ability to continue its research and development activities.  However,
there can be no  assurance  at this  time that the  Company,  its  research  and
business  partners,  vendors or customers will  successfully be able to identify
and remedy all potential Year 2000 problems or that a system  failure  resulting
from a failure to identify any such problems  would not have a material  adverse
effect on the Company.

         NASDAQ LISTING REQUIREMENTS

         In August 1997,  the Securities  and Exchange  Commission  approved new
listing  standards for companies  listed on the Nasdaq  SmallCap  Market.  These
standards  were  established  to enhance  the  quantitative  threshold  criteria
necessary  to qualify for initial  entry and  continued  listing.  Beginning  in
February 1998, Nasdaq required each small cap issuer to sign a Listing Agreement
attesting to the issuer's consent to abide by the specific eligibility criteria,
as set forth in the  Marketplace  Rules of The  Nasdaq  Stock  Market.  To be in
compliance  with  these  rules,  SunPharm  is  required  to  meet  a  number  of
requirements,  one of which is to maintain  net  tangible  assets of at least $2
million or a minimum market  capitalization  of $35 million or earn a net income
of  $500,000  in its latest  fiscal  year (or 2 of the 3 latest  fiscal  years).
Failure  to meet this or any of the other  requirements,  or failure to cure any
deficiency  within the timeframe  permitted under the Marketplace  Rules,  could
result in delisting of the Company's stock,  resulting in reduced  liquidity and
accessibility  of the stock to  investors.  There can be no  assurance  that the
Company  will  continue  to be able to  comply  with the  Marketplace  Rules and
maintain its listing on the Nasdaq SmallCap Market.

ITEM 2.  DESCRIPTION OF PROPERTY.

         The Company leases its executive offices in Ponte Vedra Beach, Florida,
totaling 4,788 square feet, at a current annual rent of approximately  $110,000.
The lease expires in November 2003 and is renewable. The Company also leases 470
square feet of  laboratory  space at the Sid Martin  Biotechnology  Institute in
Alachua, Florida, for the purpose of analytical testing. The Company's sponsored
research is conducted in  laboratory  facilities  operated by the  University of
Florida in Gainesville, Florida.

                                       17

<PAGE>

ITEM 3.  LEGAL PROCEEDINGS.

         There are no  material  legal  proceedings  required  to be reported in
response to this item.

ITEM 4. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS.

         Not Applicable.

                                       18

<PAGE>

                                     PART II

ITEM 5.  MARKET FOR COMMON EQUITY AND RELATED STOCKHOLDER MATTERS.

         The Company's  Common Stock is currently  traded on the Nasdaq SmallCap
Market under the symbol  "SUNP".  Previously,  the Company's  Units and Warrants
from its 1995 initial public offering  ("IPO") traded on this exchange under the
symbols  "SUNPU"  and "SUNPW"  until their  expiration  on April 13,  1998.  The
following table presents quarterly  information on the price range of the Units,
Common Stock and Warrants,  indicating the high and low sales prices reported by
the Nasdaq SmallCap Market for the periods indicated.

                                 1997                           1998
                      ------------------------          --------------------
                       HIGH               LOW            HIGH            LOW
                       ----               ---            ----            ---
First Quarter
Units                 $5.44              $4.25          $5.75           $4.44
Common Stock           5.50               3.75           6.25            4.13
Warrants               0.84               0.38           0.22            0.06

Second Quarter
Units                 $4.38              $2.88            N/A             N/A
Common Stock           4.63               2.63          $5.94           $3.25
Warrants               0.44               0.25           0.06            0.03

Third Quarter
Units                 $3.88              $3.00            N/A             N/A
Common Stock           4.06               2.63          $3.38           $1.50
Warrants               0.41               0.25            N/A             N/A

Fourth Quarter
Units                 $6.25              $3.50            N/A             N/A
Common Stock           6.25               3.63          $2.25           $0.75
Warrants               0.53               0.13            N/A             N/A


         At March 16, 1999,  the  Company's  shares of Common Stock were held by
approximately 135 holders of record, and approximately 700 beneficial owners.

        SunPharm is a development-stage company, has not paid a cash dividend to
holders of its Common Stock,  and does not  anticipate  paying cash dividends on
its Common Stock in the foreseeable  future. The declaration and payment of cash
dividends in the future will be at the  discretion of the Board of Directors and
will depend on the Company's earnings,  financial  condition,  capital needs and
other factors deemed pertinent by the Board of Directors, including limitations,
if any, on the payment of dividends under state law and any then-existing credit
agreement.

ITEM 6.  MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS
         OF OPERATIONS.

OVERVIEW

        Since its inception in May 1990, SunPharm has devoted  substantially all
of  its  efforts  and  resources  to  research  and   development  of  potential
pharmaceutical  products.  Such research and development is conducted on its own
behalf and through collaborations with clinical institutions. The Company's drug
development strategy emphasizes  conducting its research and clinical activities
at the  University  of  Florida,  in  conjunction  with its  Sponsored  Research
Agreement. (See

                                       19

<PAGE>
"Item 1. Description of Business - Licensed Technology and Sponsored Research").
The Company has incurred cumulative net losses of $19,270,000 from its inception
through December 31, 1998.

        In January 1995, the Company  completed its initial  public  offering of
securities  which  resulted  in net  proceeds  to the  Company of  approximately
$7,200,000.  These proceeds were sufficient to finance the Company's  operations
through  mid-1996,  at which time the Company raised  $3,095,000 of net proceeds
through a private  placement  financing and exercise of warrants.  Also in 1996,
the Company  recorded a $1,000,000  milestone  payment from  Warner-Lambert.  In
subsequent  private placements which closed in March 1997 and November 1998, the
Company  raised  an  additional  $6,116,500  and  $1,160,000  of  net  proceeds,
respectively.  At the present time,  the Company  believes such proceeds will be
sufficient to fund its operations  into the third quarter of 1999, at which time
the Company will require additional financing.

        The  Company  intends  to  obtain  additional  funds  for  research  and
development   through   collaborative   arrangements  with  corporate  partners,
additional financing and from other sources. There can be no assurance that such
arrangements  will be concluded,  if at all, on terms  favorable to the Company.
The Company  expects to incur  additional  significant  operating  losses for at
least the next two years,  principally as a result of its continuing anticipated
research and development and clinical trials expenditures.

RESULTS OF OPERATIONS

YEARS ENDED DECEMBER 31, 1996, 1997, AND 1998

        The Company  recorded  total  revenues  of $394,000 in 1998  compared to
$280,000 in 1997 and  $1,073,000  in 1996.  1998 revenues  included  $231,000 of
sponsored research, representing payments for preclinical work contracted with a
corporate partner, with an identical amount included in research and development
expense. 1997 revenues consisted solely of interest income on invested cash. The
Company's  1996  revenues  included a  $1,000,000  milestone  payment  under the
Warner-Lambert  agreement for  successful  completion of DENSPM Phase I testing.
The  Company   expects  to  receive  an   additional   milestone   payment  from
Warner-Lambert in late 1999, provided that the Phase II trials for DENSPM, which
Warner-Lambert is conducting, are successfully completed.

        The Company reported a net loss in 1998 of $3,767,000, which compares to
net losses of $3,906,000 in 1997 and  $2,837,000 in 1996.  Compared to 1997, the
lower net loss in 1998 was due to increased  revenues,  as discussed  above. The
lower net loss in 1996 was impacted by higher revenues,  as discussed above, and
lower expenses as discussed below.

        Research and development  expenses  increased 4% from $2,417,000 in 1997
to $2,510,000 in 1998.  However,  since  $231,000 of the 1998 amount  represents
sponsored  research  offset by an equal  amount of revenue as  discussed  above,
actual research and development expenses in 1998 declined by roughly 6% from the
prior year. The Company's  research and development  expenses relate principally
to human  clinical  trials,  license  payments  to the  University  of  Florida,
expenses for screening and testing of drug compounds,  salaries and benefits for
the Company's employees who are engaged in research and development  activities,
and legal costs of patent  prosecution  by retained  counsel.  The lower  actual
expenses in 1998, as compared to 1997,  were due to lower clinical  investigator
and monitoring costs.  Research and development expenses for 1997 were 8% higher
than  the  $2,228,000   recorded  in  1996.  This  increase   reflected  greater
preclinical  activity,   increased  sponsored  research  payments  made  to  the
University of Florida,  expenses  associated with an expanding patent portfolio,
and expenses  associated with  establishment of a quality assurance  laboratory.
The Company  expects its research and  development  expenses to increase in 1999
and  2000,  reflecting  anticipated  increases  in the  funding  of  preclinical
studies,  the initiation of pilot clinical  trials for four  compounds,  and the
anticipated addition of a regulatory affairs staff position.

        General  and   administrative   expenses  declined  by  7%  in  1998  to
$1,652,000,  from $1,769,000 recorded in 1997. The decline reflected, in part, a
consolidation of investor relations activity. 1997 expenses were 26% higher than
the $1,401,000  recorded in 1996.  Contributing  significantly  to this increase
were salaries,  benefits and personnel  recruiting  expenses associated with the
addition of three management positions, beginning in September 1996. The Company
expects a slight increase in its general and administrative expenses in 1999 and
a larger increase in 2000,  anticipating greater need for administrative support
for planned  growth in its drug  pipeline  and  corporate  partnering  activity.

                                       20

<PAGE>

LIQUIDITY AND CAPITAL RESOURCES

        Since its inception,  the Company has financed its operations  primarily
through  collaborative  research and  sublicense  agreements  with its strategic
alliance  partners  and the  issuance  of debt and  equity  securities.  Through
December 31, 1998, the Company has received  $3,116,000 of cumulative  sponsored
research and  sublicensing  revenues and  $20,872,000  in  consideration  of the
issuance of debt and equity securities.

        On January 12, 1995, the Company  completed an initial  public  offering
(the "IPO") of 1,100,000  units ("Unit") at $7.00 per Unit.  Each Unit consisted
of one share of the  Company's  Common  Stock and one  Redeemable  Common  Stock
Purchase Warrant ("Warrant"), which entitled the holder to purchase one share of
Common  Stock at $8.75 per  share.  The  Warrants,  which  were due to expire on
January 12, 1998,  three years after issuance,  were extended to April 13, 1998,
at which time they expired. Additionally, on February 16, 1995, a representative
of Royce  Investments,  underwriters in the IPO, exercised an option to purchase
an  additional  165,000  Units at $7.00  per  Unit.  Proceeds  from the IPO were
approximately  $7,200,000  of  cash,  net of  underwriting  and  other  costs of
$1,655,000.  Of such net proceeds, the Company used approximately  $1,793,000 to
repay its  outstanding  indebtedness  (including  accrued  interest  and certain
fees).

        During the year ended  December  31,  1996,  the Company  completed  the
private  placement of 537,623 units (the "1996 Units")  pursuant to Section 4(2)
of the Securities Act of 1933, as amended (the "Act"),  for $5.50 per unit. Each
1996  Unit  consisted  of one  share  of the  Company's  Common  Stock  and  one
redeemable  Common Stock  Purchase  Warrant.  The warrants  included in the 1996
Units  expire four years from the date of issuance and have  exercise  prices of
$5.50 per share  until the first  anniversary  date,  $6.50 per share  until the
second  anniversary  date,  and $7.50 per share  thereafter.  Additionally,  the
warrants  included in the 1996 Units are subject to redemption by the Company at
$0.01 per  warrant,  provided  the  Company's  Common Stock closes at a price of
$8.50,  $9.50 or $10.50 per share for 20  consecutive  days  during the  second,
third or fourth years,  respectively,  of the term of the warrant. Proceeds from
the private placement were approximately $2,636,000,  net of placement agent and
other costs of approximately $321,000.

        Also during 1996, the Company  offered  certain of its existing  warrant
holders a 30% reduction in their  applicable  exercise  price if they  exercised
their warrants prior to December 31, 1996. Additionally,  for each four warrants
exercised,  participants  were issued a warrant identical to the warrants issued
in the private  placement.  As a result of this warrant exchange offer,  236,721
outstanding  warrants  were  exercised in exchange for 236,721  shares of Common
Stock and 59,178 new warrants.  The Company  received  proceeds from the warrant
exchange  of  approximately  $459,000,  net of offering  costs of  approximately
$34,000.

        On March 28, 1997, the Company sold 1,828,286  units (the "1997 Units"),
each  consisting of one share of the Company's  Common Stock and one  redeemable
Common Stock  Purchase  Warrant (the "1997  Warrants")  for $3.50 per Unit.  The
Warrants included in the 1997 Units expire five years from the date of issuance.
In case of a "cashless  exercise," the 1997 Warrant  exercise price is $4.00 per
share plus forty percent of the difference  between the current trading price of
the  Company's  Common  Stock and $4.00;  in all other  cases,  the 1997 Warrant
exercise price is $4.00 per share plus thirty percent of the difference  between
the current trading price of the Company's  Common Stock and $4.00. The Warrants
are subject to  redemption  at the exercise  price by the Company,  provided the
Company's Common Stock closes at a price of $16.00,  $20.00,  $24.00,  or $28.00
per share for twenty consecutive days during the second,  third, fourth or fifth
years, respectively,  of the term of the 1997 Warrant. Proceeds from the private
placement were  $6,116,500,  net of placement  agent and other offering costs of
$282,500.  During the nine months ended  December 31, 1997,  the Company sold an
additional  120,000  1997  Units  and  received  proceeds  of  $378,000,  net of
placement costs of $42,000.

        On March 28, 1997, the Company and warrant  holders amended the terms of
the warrants issued in the private placement of 537,623 units and in the warrant
exchange  resulting  in 59,178 new  warrants,  to provide  that (i) the  warrant
exercise price was reduced to $3.00 per share, (ii) the price of Common Stock of
the Company at which the Company can exercise  the call  feature was  increased,
(iii) the warrant  expiration  date was extended to March 31, 2001, and (iv) the
Company  would use  reasonable  best efforts to register the resale of shares by
June 30, 1997.

        On November  13,  1998,  the  Company  sold  300,000  shares of Series A
Redeemable Convertible Preferred Stock ("Preferred Stock") and 853,565 of Common
Stock to  certain  institutions  and  other  accredited  investors  in a Private

                                       21

<PAGE>

Placement  pursuant  to  Regulation  D under  the  Securities  Act of 1933.  The
purchase  price for the  Preferred  Stock and Common  Stock sold in the  Private
Placement  consisted of $1,200,000 in cash and the surrender by the investors of
approximately  347,000  redeemable  Common Stock  Purchase  Warrants  originally
issued in the  Company's  March 1997  private  placement  financing  . Shares of
Series A Preferred Stock are initially  convertible to Common Stock on a 1-for-1
basis, subject to customary antidilution adjustments.  Dividends shall accrue on
the  Series  A  Preferred  Stock at the rate of 8% per  annum.  In the  event of
liquidation, dissolution, or winding up of the Company, or, at the option of the
holders of the Preferred  Stock, a  consolidation  or merger of the Company of a
sale of all or  substantially  all of its assets,  the  Preferred  Stock will be
entitled to receive in preference  to the  Company's  Common Stock an amount per
share equal to the original purchase price plus any accrued dividends per share.
Redemption  of the  Preferred  Stock is at the  request  of  holders of at least
33-1/3% of such shares  outstanding,  which  request may be made at any time two
years following closing of the Private Placement.  In the event of such request,
the Company shall be required to redeem all of the Series A Preferred Stock held
by the  requesting  holders  at a  redemption  price  equal to $4.00  per  share
(subject to adjustment),  plus any accrued  dividends per share.  The redemption
price  may be  paid,  at the  Company's  option,  in  cash or in  shares  of the
Company's  Common Stock.  The Company's  intention is to make such redemption in
Common Stock,  and accordingly the Series A Preferred Stock has been included in
Stockholder's  Equity.  Proceeds to the Company from this Private Placement were
$1,160,000 net of legal fees of $40,000.

         During the year ended  December  31,  1998,  net cash used in operating
activities was $4,023,000,  as compared to $4,062,000 during the prior year. The
lower  usage of cash by the Company in 1998 was  primarily  due to the lower net
loss.  The  Company  had net  working  capital of  approximately  $1,410,000  at
December 31, 1998,  and will require  additional  funds to continue  preclinical
testing and clinical trials of its potential products. The Company believes that
available  cash at December 31, 1998 will satisfy its  operating  needs into the
third quarter of 1999, at which time additional funding will be required.

         On February 16, 1999, the  underwriter  of the Company's  IPO agreed to
surrender a purchase  option for 110,000  shares of Common Stock  exercisable at
$11.20 per share, which it had acquired in connection with the IPO and which was
due to expire on January 12, 2000. In exchange for surrender of this option, the
Company  agreed to issue an equal number of shares to the  underwriter  at $0.60
per share, for total proceeds of $66,000.

         On  March  31,  1999,  the  Company  sold  66,667  shares  of  Series B
Redeemable Convertible Preferred Stock ("Series B Preferred") and 183,333 shares
of Common Stock to an institutional  investor in a Private Placement pursuant to
Regulation D under the  Securities  Act of 1933.  Rights and  preferences on the
Series B  Preferred  were  identical  to the  Series A  Preferred  stock sold in
November 1998 and discussed above.  Proceeds from this Private  Placement closed
on March 31, 1999 were approximately $485,000, net of legal costs.

        The  Company  expects  to  incur  substantial  additional  research  and
development  expenses,  including expenses associated with preclinical  studies,
clinical trials and  manufacturing.  The Company intends to use a portion of its
cash resources, together with funds from its existing collaborative arrangements
with  Warner-Lambert  and  Nippon  Kayaku,  for  these  purposes;  however,  the
Company's rights to receive payments from  Warner-Lambert  and Nippon Kayaku are
dependent  upon the  achievement  of certain  milestones by  Warner-Lambert  and
Nippon Kayaku,  respectively,  and are not within the control of the Company. No
assurance  can be made  that  such  milestones  will be  achieved  or that  such
payments  will be  received  by the  Company.  The  Company  intends  to  obtain
additional  funds  for  research  and  development   through  new  collaborative
arrangements  with  corporate  partners,  additional  financing,  and from other
sources;  however,  there can be no  assurance  that the Company will be able to
obtain necessary financing when required or what the terms of any financing,  if
obtained,  might be.  Accordingly,  there can be no assurance  of the  Company's
future  success.  In addition,  the Company's  future success is affected by the
progress of the  Company's  research and  development,  the scope and results of
preclinical  studies  and  clinical  trials,  the cost and timing of  regulatory
approvals,  the  rate  of  technological  advances,  determinations  as  to  the
commercial potential of the Company's products under development,  the status of
competitive products, the establishment of manufacturing capacity or third-party
manufacturing arrangements,  its reliance on research institutions and corporate
partners, the uncertainty of health care reform and the competitive  environment
in which the Company operates. The Company's existing capital resources will not
be sufficient to fund the Company's operations to the point of introduction of a
commercially  successful  product,  if and when  that  time  should  arrive.  No
assurance  can be given that  additional  funds will be available on  acceptable
terms, if at all.

        The Company has incurred losses since inception and, therefore,  has not
been subject to federal  income taxes.  As of December 31, 1998, the Company had
net operating loss ("NOL") and tax credit carry forwards for income tax purposes
of approximately $16,953,000 and $596,000,  respectively, which may be available
to reduce future taxable income and future tax liabilities. These carry forwards
begin to expire  in 2008.  The Tax  Reform  Act of 1986  provides  for an annual
limitation  on the use of NOL  and  credit  carry  forwards  (following  certain
ownership  changes)  that could  significantly  limit the  Company's  ability to
utilize these carry forwards.  The Company has made no determination  concerning
whether  there has been such a cumulative  change in  ownership.  It is possible
that  such a change  in  ownership  occurred  following  the  completion  of the
Company's  IPO,  subsequent  private  placements,  and  subsequent  exercise  of
warrants. Accordingly, the Company's ability to utilize the aforementioned carry
forwards to reduce future  taxable  income and tax  liabilities  may be 

                                       22

<PAGE>

limited.  Additionally,  because  United  States tax laws limit the time  during
which these carry forwards may be applied against future taxes,  the Company may
not be able to take full  advantage of these  attributes  for federal income tax
purposes.

ITEM 7.  FINANCIAL STATEMENTS.

         The  financial  statements  and  supplementary   financial  information
required to be filed under this Item are  presented on pages F-1 through F-25 of
this Annual Report on Form 10-KSB, and are incorporated herein by reference.

ITEM 8.  CHANGES  IN  AND  DISAGREEMENTS  WITH  ACCOUNTANTS  ON  ACCOUNTING  AND
         FINANCIAL MATTERS.

         None.

                                       23

<PAGE>

                                    PART III

ITEM 9.  DIRECTORS,   EXECUTIVE   OFFICERS,   PROMOTERS  AND  CONTROL   PERSONS;
         COMPLIANCE WITH SECTION 16(A) OF THE EXCHANGE ACT.

         The information required by this item as to the directors and executive
officers of the Company is hereby incorporated by reference from the information
appearing under the captions "Election of Directors,"  "Executive  Compensation"
and "Compliance with Section 16(a)" in the Company's  definitive proxy statement
which  involves the election of directors and is to be filed with the Securities
and Exchange Commission  ("Commission")  pursuant to the Securities Exchange Act
of 1934,  as  amended  (the  "Exchange  Act")  within 120 days of the end of the
Company's fiscal year ended December 31, 1998.

ITEM 10.  EXECUTIVE COMPENSATION.

         The  information  required  by this  item as to the  management  of the
Company is hereby incorporated by reference from the information appearing under
the captions "Executive  Compensation" and "Election of  Directors--Compensation
of Directors" in the Company's  definitive  proxy  statement  which involves the
election of  directors  and is to be filed with the  Commission  pursuant to the
Exchange  Act  within  120 days of the end of the  Company's  fiscal  year ended
December 31, 1998.

ITEM 11. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT.

         The information required by this item as to the ownership by management
and others of securities of the Company is hereby incorporated by reference from
the  information  appearing  under the caption  "Security  Ownership  of Certain
Beneficial  Owners and Management" in the Company's  definitive  proxy statement
which  involves the election of directors and is to be filed with the Commission
pursuant to the Exchange Act within 120 days of the end of the Company's  fiscal
year ended December 31, 1998.

ITEM 12. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS.

         The  information   required  by  this  item  as  to  certain   business
relationships  and transactions with management and other related parties of the
Company is hereby incorporated by reference from the information appearing under
the captions "Certain  Relationships and Related  Transactions" in the Company's
definitive proxy statement which involves the election of directors and is to be
filed with the  Commission  pursuant to the  Exchange Act within 120 days of the
end of the Company's fiscal year ended December 31, 1998.

ITEM 13. EXHIBITS AND REPORTS ON FORM 8-K.

(a)      Exhibits

EXHIBIT NO.                              DESCRIPTION

 3.1(a)      --      Certificate of Incorporation  (incorporated by reference to
                     Exhibit 3.1 to the Company's Registration Statement on Form
                     SB-2)  (Registration  No.   33-85416-A)(the   "Registration
                     Statement")).

3.1(b)*      --      Certificate  of  Designation,  Preferences  and  Rights  of
                     Series A Redeemable Convertible Preferred Stock.

 3.2         --      Bylaws  (incorporated  by  reference  to Exhibit 3.2 to the
                     Company's Registration Statement).

 4.1         --      Specimen   Common  Stock   Certificate   (incorporated   by
                     reference  to  Exhibit  4.1  to  Amendment  No.  2  to  the
                     Company's Registration Statement).

 4.2         --      Revised Form of Warrant  Agreement  relating to  Redeemable
                     Common Stock Purchase  Warrants  (incorporated by reference
                     to  Exhibit  4.2  to  Amendment   No.3  to  the   Company's
                     Registration Statement).

                                       24

<PAGE>

EXHIBIT NO.                              DESCRIPTION

  4.3        --      Investment  Agreement  between  the  Company  and  SunPharm
                     Investors,  L.P., (incorporated by reference to Exhibit 4.4
                     to the  Company's  Quarterly  Report on Form 10-QSB for the
                     quarter ended June 30, 1997 (the "June 1997 Form  10-QSB"))
                     dated  January 11,  1993,  relating to the  Company's  9.5%
                     Extendable Notes and Warrants (incorporated by reference to
                     Exhibit 4.4 to the Company's Registration Statement).

  4.4        --      Revised  form of  Unit  Purchase  Option  issued  to  Royce
                     Investment  Group,  Inc.   (incorporated  by  reference  to
                     Exhibit   4.5  to   Amendment   No.  3  to  the   Company's
                     Registration Statement).

  4.5        --      Unit Purchase  Agreement dated March 28, 1997,  between the
                     Company and several  purchasers name therein  (incorporated
                     by  reference  to Exhibit  4.1 to the  Company's  Quarterly
                     Report on Form 10-QSB for the quarter  ended March 30, 1997
                     (the "March 1997 Form 10-QSB")).

  4.6        --      Warrant Agreement dated March 28, 1997, between the Company
                     and  several  purchasers  names  therein  (incorporated  by
                     reference to Exhibit 4.2 to the  Company's  March 1997 Form
                     10-QSB).

 4.7         --      Securities  Purchase  Agreement  dated  November  13, 1998,
                     between the Company and several purchasers named therein.


10.1         --      Patent  License  Agreement  between  the  Company  and  the
                     University  of  Florida  Research  Foundation,  Inc.  dated
                     December 9, 1991, as amended by the First Amendment thereto
                     dated  December  30,  1991 and the Second  Amendment  dated
                     March 26, 1993  (incorporated  by reference to Exhibit 10.1
                     to the Company's Registration Statement).

10.2         --      Corporate  Research  Agreement  between the Company and the
                     University of Florida Research Foundation, Inc. dated April
                     30, 1993, as amended by the First  Amendment  dated May 16,
                     1994  (incorporated  by  reference  to Exhibit  10.2 to the
                     Company's Registration Statement).

10.3         --      Sublicense Agreement between the Company and Warner-Lambert
                     Company  dated May 1, 1993  (incorporated  by  reference to
                     Exhibit 10.3 to the Company's Registration Statement).

10.4         --      Exclusive  Sublicense  Agreement  between  the  Company and
                     Nippon   Kayaku  Co.,   Ltd.   dated   February   28,  1994
                     (incorporated by reference to Exhibit 10.4 to the Company's
                     Registration Statement).

10.5**       --      Amended and Restated  1994 Stock Option Plan  (incorporated
                     by  reference to Exhibit  10.1 to the  Company's  June 1997
                     Form 10-QSB).

10.6**       --      Employment  Agreement  between the  Corporation  and Stefan
                     Borg dated  April 1, 1993  (incorporated  by  reference  to
                     Exhibit 10.6 to the Company's Registration Statement).

10.7         --      Stock Appreciation Rights Agreement between the Company and
                     Craig  Siegler  dated  August  1,  1994   (incorporated  by
                     reference  to Exhibit  10.7 to the  Company's  Registration
                     Statement).

10.8         --      Stock  Purchase  Warrant  between the  Company   and Craig
                     Siegler dated August 18, 1994 (incorporated by reference to
                     Exhibit 10.8 to the Company's Registration Statement).

10.9**       --      Consulting Agreement between the Company and Dr. Raymond J.
                     Bergeron  dated  December  9,  1991,  as amended by letters
                     dated  April 2, 1993 and April 29,  1994  (incorporated  by
                     reference  to Exhibit 10. 9 to the  Company's  Registration
                     Statement).

10.10        --      Form  of  Bridge  Warrant   Certificate   (incorporated  by
                     reference to Exhibit  10.10 to the  Company's  Registration
                     Statement).

10.11        --      Form  of  Subscription   Agreement  for  Bridge   Financing
                     (incorporated   by  reference  to  Exhibit   10.13  to  the
                     Company's Registration Statement).

10.12        --      Second Amended and Restated  Registration  Rights Agreement
                     (incorporated   by  reference  to  Exhibit   10.14  to  the
                     Company's Registration Statement).

10.13        --      Agency   Agreement   between  the   Registrant   and  Royce
                     Investment Group, Inc. dated August 12, 1994  (incorporated
                     by reference to Exhibit 10.15 to the Company's Registration
                     Statement).

10.14        --      First Amendment to Second Amended and Restated Registration
                     Rights  Agreement  (incorporated  by  reference  to Exhibit
                     10.16  to  Amendment  No. 1 to the  Company's  Registration
                     Statement).

                                       25
<PAGE>

EXHIBIT NO.                              DESCRIPTION

10.15        --      Third  Amendment to Patent  License  Agreement  between the
                     Company and the University of Florida Research  Foundation,
                     Inc.   (incorporated  by  reference  to  Exhibit  10.17  to
                     Amendment No. 1 to the Company's Registration Statement).

10.16        --      License Agreement between the Company and the University of
                     Florida  Research  Foundation,  Inc. dated October 23, 1995
                     (incorporated   by  reference  to  Exhibit   10.16  to  the
                     Company's  Annual  Report on Form 10-KSB for the year ended
                     December 31, 1995).

10.17        --      SunPharm  Corporation Amended and Restated 1995 Nonemployee
                     Directors' Stock Option Plan  (incorporated by reference to
                     Exhibit 10.2 to the Company's June 1997 Form 10-QSB).

10.18        --      Form  of   Redeemable   Common   Stock   Purchase   Warrant
                     (incorporated  by reference to Exhibit 4.2 to the Company's
                     Quarterly  Report  on Form  10-QSB  for the  quarter  ended
                     September 30, 1996 (the "September 1996 Form 10-QSB")).

10.19        --      Form of  Subscription  Agreement  relating to 1996  Private
                     Placement   of  Units   consisting   of  Common  Stock  and
                     Redeemable Common Stock Purchase Warrants  (incorporated by
                     reference to Exhibit 4.1 to the  Company's  September  1996
                     Form 10-QSB).

10.20        --      Fourth  Amendment to Patent License  Agreement  between the
                     Company and the University of Florida Research  Foundation,
                     Inc. effective September 9, 1996 (incorporated by reference
                     to the Company's  Annual Report on Form 10-KSB for the year
                     ended December 31, 1997 (the "1997 Form 10-KSB")).

10.21        --      Lock-up   Agreement   between  the  University  of  Florida
                     Research  Foundation,  Inc.  and  members  of the  Board of
                     Directors   of  Company   effective   December   31,   1996
                     (incorporated   by  reference  to  Exhibit   10.21  to  the
                     Company's 1997 Form 10-KSB).

10.22        --      Fifth  Amendment to Patent  License  Agreement  between the
                     Company and the University of Florida Research  Foundation,
                     Inc. dated December 26, 1997  (incorporated by reference to
                     Exhibit 10.22 to the Company's 1997 Form 10-KSB).

10.23        --      First  Amendment to Amended and Restated  1995  Nonemployee
                     Directors' Stock Option Plan  (incorporated by reference to
                     Exhibit  10.1 to the  Company's  Quarterly  Report  on Form
                     10-QSB for the quarter ended June 30, 1998).

10.24*       --      Second Amendment to Corporate  Research  Agreement  between
                     the  Company  and  the   University  of  Florida   Research
                     Foundation, Inc. dated September 9, 1996.

10.25*       --      Third Amendment to Corporate Research Agreement between the
                     Company and the University of Florida Research  Foundation,
                     Inc. dated April 2, 1998.

11.1*        --      Calculation of weighted average shares  outstanding and net
                     loss of per share for the twelve months ending December 31,
                     1998 and 1997.

27.1*        --      Financial Data Schedule *

- - ----------
     *Filed herewith.
  **Management or compensatory plan.

(b)      Reports on Form 8-K

         None.

                                       26

<PAGE>



                                   SIGNATURES

In  accordance  with Section 13 or 15(d) of the Exchange  Act, the Issuer caused
this  report to be  signed on its  behalf  by the  undersigned,  thereunto  duly
authorized.

                               SUNPHARM CORPORATION

                               By: /s/ STEFAN BORG
                                   ---------------------------------------------
                                       Stefan Borg
                                       President and Chief Executive Officer

                               Date:  March 30 , 1999  
                                    --------------------------------------------

In  accordance  with the Exchange  Act, this report has been signed below by the
following persons on behalf of the Issuer and in the capacities and on the dates
indicated.

Date:  March 30, 1999         /s/ STEFAN BORG
                                  ----------------------------------------------
                                  Stefan Borg
                                  President and Chief Executive Officer
                                 (Principal Executive Officer)

Date:  March 30, 1999         /s/ PAUL M. HERRON
                                  ----------------------------------------------
                                  Paul M. Herron
                                  Vice President and Chief Financial Officer
                                 (Principal Financial and Accounting Officer)

Date:  March 30, 1999         /s/ PHILIP R. TRACY
                                  ----------------------------------------------
                                  Philip R. Tracy 
                                  Chairman of the Board of Directors

Date:  March 30, 1999         /s/ CHARLES L. DIMMLER III
                                  ----------------------------------------------
                                  Charles L. Dimmler III, Director


Date:  March 30, 1999         /s/ JERRY T. JACKSON
                                  ----------------------------------------------
                                  Jerry T. Jackson, Director

Date:  March 30, 1999         /s/ ROBERT S. JANICKI, M.D.
                                  ----------------------------------------------
                                  Robert S. Janicki, Director

Date:  March 30, 1999         /s/ JAY MOORIN
                                  ----------------------------------------------
                                  Jay Moorin, Director

Date:  March 30, 1999         /s/ JACQUES REJEANGE
                                  ----------------------------------------------
                                  Jacques Rejeange, Director

Date:  March 30, 1999         /s/ ROBERT A. SCHOELLHORN
                                  ----------------------------------------------
                                  Robert A. Schoellhorn, Director

                                       27
<PAGE>
SUNPHARM CORPORATION
(A DEVELOPMENT STAGE COMPANY)

FINANCIAL STATEMENTS FOR THE YEARS ENDED
DECEMBER 31, 1998 AND 1997 AND THE PERIOD
FROM MAY 3, 1990 (DATE OF INCORPORATION) TO
DECEMBER 31, 1998 AND INDEPENDENT AUDITORS'
REPORT


<PAGE>

INDEPENDENT AUDITORS' REPORT


To the Board of Directors and Stockholders of SunPharm Corporation:

We have  audited the  accompanying  balance  sheets of SunPharm  Corporation  (a
development  stage  company) as of December  31, 1998 and 1997,  and the related
statements of  operations,  stockholders'  equity,  and cash flows for the years
then  ended,  and for the  period  from May 3, 1990 (date of  incorporation)  to
December 31, 1998.  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. The Company's financial statements for
the period May 3, 1990 (date of  incorporation)  through  December 31, 1994 were
audited by other  auditors  whose  report,  dated  April 3, 1995,  expressed  an
unqualified opinion on those statements. The financial statements for the period
May 3, 1990 (date of  incorporation)  through  December 31, 1994  reflect  total
revenues and net loss of $1,885,000 and $4,390,367, respectively, of the related
totals.  The other  auditors'  report has been furnished to us, and our opinion,
insofar as it relates to the amounts  included for such prior  period,  is based
solely on the report of such other auditors.

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

In our  opinion,  based on our  audits and the  report of other  auditors,  such
financial  statements  present fairly, in all material  respects,  the financial
position of SunPharm  as of December  31, 1998 and 1997,  and the results of its
operations  and its cash flows for the two years then ended,  and for the period
from May 3, 1990 (date of  incorporation)  to December 31, 1998,  in  conformity
with generally accepted accounting principles.

The Company is in the  development  stage at December 31, 1998.  As discussed in
Note 1 to the  financial  statements,  successful  completion  of the  Company's
development program and ultimately,  the attainment of profitable  operations is
dependent upon future events,  including obtaining adequate financing to fulfill
its development activities, obtaining regulatory approval, and achieving a level
of sales adequate to support the Company's cost structure.


DELOITTE & TOUCHE LLP
Jacksonville, Florida
February 12, 1999

                                      F-2
<PAGE>

SUNPHARM CORPORATION
(A Development Stage Company)

BALANCE SHEETS
DECEMBER 31, 1998 AND 1997
- - --------------------------------------------------------------------------------

<TABLE>
<CAPTION>

<S>                                                                    <C>             <C>      
ASSETS                                                                  1998            1997

CURRENT ASSETS:
  Cash                                                              $         --    $    356,969
  Investments                                                          1,699,200       4,268,566
  Prepaid expenses and other                                             162,734         206,024
                                                                    ------------    ------------
    Total current assets                                               1,861,934       4,831,559
RECEIVABLE FROM STOCKHOLDER                                              124,865         106,611
PROPERTY AND EQUIPMENT, net of accumulated
  depreciation of $17,085 and $10,322                                     57,933          30,319
OTHER ASSETS                                                               9,275           3,250
                                                                    ------------    ------------
TOTAL ASSETS                                                        $  2,054,007    $  4,971,739
                                                                    ============    ============

LIABILITIES AND STOCKHOLDERS' EQUITY

CURRENT LIABILITIES:
  Accounts payable                                                  $    213,627    $    399,996
  Accrued liabilities                                                    135,580         231,754
  Notes payable                                                          102,706         155,271
                                                                    ------------    ------------
    Total current liabilities                                            451,913         787,021

COMMITMENTS AND CONTINGENCIES (Note 6)

STOCKHOLDERS' EQUITY:
  Undesignated serial preferred stock, $.001 par value, 2,200,000
    and 2,500,000 shares authorized, none issued and outstanding              --              --
  Series A redeemable convertible preferred stock,
    $.001 par value, 300,000 and 0 shares authorized, issued
    and outstanding (cumulative dividends in arrears of
    $12,887 at December 31, 1998)                                            300              --
  Common stock, $.0001 par value, 25,000,000 shares
    authorized, 6,621,395 and 5,737,828 issued and outstanding               662             574
  Additional paid-in capital                                          20,871,578      19,687,198
  Deficit accumulated during development stage                       (19,270,446)    (15,503,054)
  Accumulated other comprehensive income                                      --              --
                                                                    ------------    ------------
          Total stockholders' equity                                   1,602,094       4,184,718
                                                                    ------------    ------------
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY                          $  2,054,007    $  4,971,739
                                                                    ============    ============

</TABLE>

The accompanying notes are an integral part of these financial statements.

                                      F-3
<PAGE>

SUNPHARM CORPORATION
(A Development Stage Company)

STATEMENTS OF OPERATIONS
- - -----------------------------------------------------------------------------

                                                                PERIOD FROM
                                                                MAY 3, 1990
                                                                 (DATE OF
                                                               INCORPORATION)
                                         YEARS ENDED                TO
                                         DECEMBER 31,           DECEMBER 31,
                               ----------------------------    --------------
                                    1998           1997            1998

SPONSORED RESEARCH/
  SUBLICENSING REVENUES        $    230,729    $         --    $  3,115,729

INTEREST INCOME                     163,126         280,045         678,433
                               ------------    ------------    ------------

          Total revenues            393,855         280,045       3,794,162
                               ------------    ------------    ------------

EXPENSES:
  Research and development        2,509,561       2,417,209      12,495,801
  General and administrative      1,651,686       1,769,261      10,078,807
  Royalty                                --              --         490,000
                               ------------    ------------    ------------

          Total expenses          4,161,247       4,186,470      23,064,608
                               ------------    ------------    ------------

NET LOSS                       $ (3,767,392)   $ (3,906,425)   $(19,270,446)
                               ============    ============    ============

LOSS PER SHARE                 $      (0.64)   $      (0.75)
                               ============    ============

SHARES USED IN COMPUTING
  LOSS PER SHARE                  5,876,875       5,214,733
                               ============    ============


The accompanying notes are an integral part of these financial statements.

                                      F-4
<PAGE>

SUNPHARM CORPORATION
(A Development Stage Company)

STATEMENTS OF STOCKHOLDERS' EQUITY
- - --------------------------------------------------------------------------------

<TABLE>
<CAPTION>

                                                                            Redeemable Convertible
                                                                               Preferred Stock
                                                               --------------------------------------------------
                                                                     SERIES A                    SERIES B
                                                               ----------------------   -------------------------
                                                                SHARES       AMOUNT       SHARES         AMOUNT
<S>                                                              <C>          <C>           <C>           <C>    
  Issuance of common stock for services,
    October 1991 ($.0064 per share)
  Issuance of common stock for license agreement rights,
    December 1991 ($.0064 per share)
  Issuance of common stock for cash, December 1991
    ($.0064 per share)                                         ---------    ---------    ---------      ---------

BALANCE, DECEMBER 31, 1991
  Issuance of Series A for cash, February through
    November 1992 ($1.67 per share)                              307,500    $ 513,525
  Issuance of Series B for cash, October through
    December 1992 ($5.00 per share)                                                         32,500      $ 162,500
  Issuance of common stock for services, October 1992
    ($.32 per share)
  Issuance of Series B for services, December 1992
    ($5.00 per share)                                                                        5,000         25,000
  Net loss
                                                               ---------    ---------    ---------      ---------
BALANCE, DECEMBER 31, 1992                                       307,500      513,525       37,500        187,500
  Issuance of Series B for cash, April through June 1993
    ($5.00 per share)                                                                       57,500        287,500
  Issuance of Series B for services, June 1993
    ($5.00 per share)                                                                        1,500          7,500
  Issuance of common stock for services, March 1993
    ($.32 per share)
  Issuance of common stock for cash, December 1993
    ($.32 per share)
  Net loss
                                                               ---------    ---------    ---------      ---------
BALANCE, DECEMBER 31, 1993                                       307,500      513,525       96,500        482,500
  Other Comprehensive income:
    Deferred compensation
    Amortization of deferred compensation
  Exercise of stock options, September 1994 ($.32 per share)
  Issuance of warrants to purchase common stock in
    connection with the Bridge notes ($2.63 per share)
  Net loss
                                                               ---------    ---------    ---------      ---------
BALANCE, DECEMBER 31, 1994                                       307,500      513,525       96,500        482,500
  Compensation expense
  Conversion of preferred stock to common stock                 (307,500)    (513,525)     (96,500)      (482,500)
  Initial public offering
  Net loss
                                                               ---------    ---------    ---------      ---------
BALANCE, DECEMBER 31, 1995                                            --           --           --             --
  Exercise of warrants
  Issuance of common stock
  Issuance of common stock for settlement of litigation
  Net loss
                                                               ---------    ---------    ---------      ---------
BALANCE, DECEMBER 31, 1996                                                  $                           $
                                                               =========    =========    =========      =========

</TABLE>

The accompanying notes are an integral part of these financial statements.

                                      F-5
<PAGE>

<TABLE>
<CAPTION>

- - ------------------------------------------------------------------------------------------------------------------------------
                                                                                                                    Deficit
                                                                                                      Accumulated  Accumulated
                                                                   Common Stock        Additional       Other        During
                                                             ----------  -----------    Paid-in    Comprehensive Development
                                                               Shares      Amount        Capital        Income        Stage
<S>                                                             <C>      <C>           <C>            <C>           <C>        
  Issuance of common stock for services,
    October 1991 ($.0064 per share)                             467,400  $        47   $     2,953
  Issuance of common stock for license agreement rights,
    December 1991 ($.0064 per share)                            311,600           31         1,969
  Issuance of common stock for cash, December 1991
    ($.0064 per share)                                          148,010           15           935
                                                             ----------  -----------   -----------    ----------- ------------
BALANCE, DECEMBER 31, 1991                                      927,010           93         5,857
  Issuance of Series A for cash, February through
    November 1992 ($1.67 per share)
  Issuance of Series B for cash, October through
    December 1992 ($5.00 per share)
  Issuance of common stock for services, October 1992
    ($.32 per share)                                              3,895                      1,250
  Issuance of Series B for services, December 1992
    ($5.00 per share)
  Net loss                                                                                                        $   (998,004)
                                                             ----------  -----------   -----------    ----------- ------------
BALANCE, DECEMBER 31, 1992                                      930,905           93         7,107                    (998,004)
  Issuance of Series B for cash, April through June 1993
    ($5.00 per share)
  Issuance of Series B for services, June 1993
    ($5.00 per share)
  Issuance of common stock for services, March 1993
    ($.32 per share)                                             31,160            3         9,997
  Issuance of common stock for cash, December 1993
    ($.32 per share)                                             15,580            2         4,998
  Net loss                                                                                                          (1,233,352)
                                                             ----------  -----------   -----------    ----------- ------------
BALANCE, DECEMBER 31, 1993                                      977,645           98        22,102                  (2,231,356)
  Other Comprehensive income:
    Deferred compensation                                                                  818,308    $  (818,308)
    Amortization of deferred compensation                                                                 818,308
  Exercise of stock options, September 1994 ($.32 per share)      7,790            1         2,499
  Issuance of warrants to purchase common stock in    
    connection with the Bridge notes ($2.63 per share)                                     600,000
  Net loss                                                                                                          (2,159,011)
                                                             ----------  -----------   -----------    ----------- ------------
BALANCE, DECEMBER 31, 1994                                      985,435           99     1,442,909                  (4,390,367)
  Compensation expense                                                                      28,188
  Conversion of preferred stock to common stock                 634,100           63       995,962
  Initial public offering                                     1,265,000          126     7,175,375
  Net loss                                                                                                          (4,369,653)
                                                             ----------  -----------   -----------    ----------- ------------
BALANCE, DECEMBER 31, 1995                                    2,884,535          288     9,642,434                  (8,760,020)
  Exercise of warrants                                          236,721           24       458,697
  Issuance of common stock                                      537,623           54     2,636,195
  Issuance of common stock for settlement of litigation          50,000            5       324,995
  Net loss                                                                                                          (2,836,609)
                                                             ----------  -----------   -----------    ----------- ------------
BALANCE, DECEMBER 31, 1996                                    3,708,879  $       371   $13,062,321    $        -- $(11,596,629)
                                                             ==========  ===========   ===========    =========== ============

</TABLE>

The accompanying notes are an integral part of these financial statements.

                                      F-6
<PAGE>

SUNPHARM CORPORATION
(A Development Stage Company)

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

                                                 REDEEMABLE CONVERTIBLE
                                                     PREFERRED STOCK           
                                    ------------------------------------------ 
                                           SERIES A            SERIES B        
                                    ------------------------------------------ 
                                      SHARES     AMOUNT     SHARES     AMOUNT  
                                
BALANCE, DECEMBER 31, 1996                                                     

  Exercise of stock options                                                    
  Issuance of common stock                                                     
  Issuance of warrants for service                                             
  Net loss                                                                     
                                    ---------  ---------  ---------  --------- 
BALANCE, DECEMBER 31, 1997                                                     
                                                                               
  Exercise of stock options                                                    
  Issuance of common stock                                                     
  Issuance of preferred stock         300,000  $     300                       
  Net loss                                                                     
                                    ---------  ---------  ---------  --------- 
BALANCE, DECEMBER 31, 1998            300,000  $     300                       
                                    =========  =========  =========  ========= 

                                                                     (Concluded)
The accompanying notes are an integral part of these financial statements.     

                                      F-7                                       
<PAGE>

<TABLE>
<CAPTION>
                                                                                                     DEFICIT    
                                                                                ACCUMULATED       ACCUMULATED    
                                        COMMON STOCK           ADDITIONAL          OTHER             DURING
                                  ----------------------------  PAID-IN        COMPREHENSIVE      DEVELOPMENT    
                                        SHARES      AMOUNT      CAPITAL           INCOME             STAGE       
                                
<S>                                    <C>          <C>        <C>             <C>                    <C>          
BALANCE, DECEMBER 31, 1996             3,708,879    $ 371      $ 13,062,321                        $(11,596,629)

  Exercise of stock options               75,663        8            15,802
  Issuance of common stock             1,953,286      195         6,519,055                                     
  Issuance of warrants for service                                   90,020                                     
  Net loss                                                                                           (3,906,425)
                                     -----------    -----      ------------     ------------       ------------
BALANCE, DECEMBER 31, 1997             5,737,828      574        19,687,198                         (15,503,054)
                                                                                                                
  Exercise of stock options               30,002        3            17,582                                     
  Issuance of common stock               883,565       85             7,398                                     
  Issuance of preferred stock                                     1,159,400                                     
  Net loss                                                                                           (3,767,392)
                                     -----------    -----      ------------     ------------       ------------
BALANCE, DECEMBER 31, 1998             6,621,395    $ 662      $ 20,871,578     $          -       $(19,270,446)
                                      ==========    =====      ============     ============       ============
</TABLE>
                                                                     (Concluded)
                                      F-8
<PAGE>
SUNPHARM CORPORATION
(A Development Stage Company)
STATEMENTS OF CASH FLOWS
- - --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                                                            
                                                                                                 PERIOD FROM
                                                                                                 MAY 3, 1990
                                                                                                  (DATE OF
                                                                          YEARS ENDED           INCORPORATION)
                                                                          DECEMBER 31,                TO      
                                                                ----------------------------      DECEMBER 31,
                                                                      1998             1997          1998
<S>                                                             <C>             <C>             <C>          
OPERATING ACTIVITIES:
  Net loss                                                      $ (3,767,392)   $ (3,906,425)   $(19,270,446)
  Adjustments to reconcile net loss to net cash
    used in operating activities:
      Depreciation and amortization                                    8,282           5,692          85,680
      Compensation expense related to options, warrants
        and stock appreciation rights                                     --          90,020         999,016
      Amortization of deferred offering costs incurred in
        connection with issuance of Bridge Notes                          --              --         775,000
      Write-off of patents                                                --              --          70,120
       Increase in receivable from stockholder                       (18,254)        (96,611)       (124,865)
       Decrease (increase) in prepaid expenses
        and other assets                                              37,265         406,042        (170,400)
       (Decrease) increase in accounts payable                      (186,369)         76,545         213,627
       (Decrease) increase in accrued liabilities                    (96,174)       (637,491)        141,830
       Increase in accrued legal fees                                     --              --         300,000
                                                                ------------    ------------    ------------
          Total adjustments                                         (255,250)       (155,803)      2,290,008
                                                                ------------    ------------    ------------

          Net cash used in operating activities                   (4,022,642)     (4,062,228)    (16,980,438)
                                                                ------------    ------------    ------------

INVESTING ACTIVITIES:
  Purchases of short-term investments                             (8,553,779)    (12,815,678)    (26,488,831)
  Sales and maturities of short-term investments                  11,123,145      10,342,424      24,789,631
  Purchases of property and equipment                                (35,896)        (26,824)        (79,918)
  Payment of patent costs                                                 --              --         (67,424)
                                                                ------------    ------------    ------------

          Net cash provided by (used in) investing activities      2,533,470      (2,500,078)     (1,846,542)
                                                                ------------    ------------    ------------

                                                                                                     Continued
</TABLE>
                                                       F-9

<PAGE>
SUNPHARM CORPORATION
(A Development Stage Company)
STATEMENTS OF CASH FLOWS
- - --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                                                            
                                                                                                 PERIOD FROM
                                                                                                 MAY 3, 1990
                                                                                                  (DATE OF
                                                                          YEARS ENDED           INCORPORATION)
                                                                          DECEMBER 31,                TO      
                                                                ----------------------------      DECEMBER 31,
                                                                      1998             1997          1998
<S>                                                             <C>             <C>             <C>         
FINANCING ACTIVITIES:
  (Repayments of) proceeds from notes payable                   $    (52,565)   $     43,070    $      2,706
  Issuance of Series A redeemable convertible
    preferred stock                                                1,159,700              --       1,673,225
  Issuance of Series B redeemable convertible
    preferred stock                                                       --              --         450,000
  Issuance of common stock                                            25,068       6,535,060      17,298,397
  Stock offering costs                                                    --              --        (597,348)
  Proceeds from payable to stockholders                                   --         542,500
  Repayment of payable to stockholders                                    --              --        (542,500)
                                                                ------------    ------------    ------------

          Net cash provided by financing activities                1,132,203       6,578,130      18,826,980
                                                                ------------    ------------    ------------

NET CHANGE IN CASH                                                  (356,969)         15,824              --

CASH AT BEGINNING OF PERIOD                                          356,969         341,145              --
                                                                ------------    ------------    ------------

CASH AT END OF PERIOD                                           $         --    $    356,969    $         --
                                                                ============    ============    ============

SUPPLEMENTAL INFORMATION:
  Cash paid for interest                                        $      4,064    $      2,512    $    171,516
                                                                ============    ============    ============


The accompanying notes are an integral part of these financial statements.                         (Concluded)
</TABLE>

                                                       F-10
<PAGE>

SUNPHARM CORPORATION
(A DEVELOPMENT STAGE COMPANY)

NOTES TO FINANCIAL STATEMENTS
YEARS ENDED DECEMBER 31, 1998 AND 1997 AND THE PERIOD FROM
MAY 3, 1990 (DATE OF INCORPORATION) TO DECEMBER 31, 1998
- - --------------------------------------------------------------------------------


1.    ORGANIZATION

      SunPharm  Corporation  ("SunPharm" or the  "Company"),  formerly  LexiGen,
      Incorporated,  was  incorporated  in the State of Delaware on May 3, 1990,
      issued  shares of its common stock in 1991,  and  commenced  operations in
      February 1992. The Company was formed to develop and commercialize  unique
      and  proprietary  polyamine  analogs  with   antiproliferative  and  other
      therapeutic uses.

      The Company is a development stage company which has devoted substantially
      all of its efforts to research  and  product  development  and has not yet
      generated any revenues from the sale of products.  At this time, there can
      be no assurance of future  revenues.  In addition,  the Company expects to
      continue to incur losses for the foreseeable  future,  and there can be no
      assurance that the Company will successfully  complete the transition from
      a development  stage company to  successful  operations.  The research and
      development  activities  in which the  Company is  engaged  involve a high
      degree of risk and uncertainty. The ability of the Company to successfully
      develop, manufacture and market its proprietary products is dependent upon
      many factors.  These factors include, but are not limited to, the need for
      additional  financing,  the  reliance on  collaborative  arrangements  for
      research and contractual agreements with corporate partners, the Company's
      dependence  on its  exclusive  license  agreement  with the  University of
      Florida,  the ability to attract and retain key personnel and consultants,
      including its founder, and the ability to develop manufacturing, sales and
      marketing expertise. In addition, the Company's future success is affected
      by the progress of the Company's  research and development,  the scope and
      results of preclinical studies and clinical trials, the cost and timing of
      regulatory approvals,  the rate of technological advances,  determinations
      as  to  the   commercial   potential  of  the  Company's   products  under
      development,  the status of competitive  products,  the  establishment  of
      manufacturing  capacity or  third-party  manufacturing  arrangements,  its
      reliance on research institutions and corporate partners,  the uncertainty
      of health care reform and the competitive environment in which the Company
      operates.  The Company's existing capital resources will not be sufficient
      to fund  the  Company's  operations  to the  point  of  introduction  of a
      commercially  successful  product, if and when that time should arrive. No
      assurance  can be  given  that  additional  funds  will  be  available  on
      acceptable terms, if at all.

      In order to continue its research and product  development  activities  as
      planned,  the Company has raised equity through an initial public offering
      ("IPO") and various private  placements of the Company's  Common Stock and
      Series  A and  Series  B  Redeemable  Convertible  Preferred  Stock.  Such
      offerings   through  December  31,  1998  have  resulted  in  proceeds  of
      approximately $19,421,000.  The Company intends to obtain additional funds
      for research  and  development  through  collaborative  arrangements  with
      corporate  partners,   additional  financings,  and  from  other  sources;
      however, there can be no assurance that the Company will be able to obtain
      necessary  financing when required or what the terms of any financing,  if
      obtained,  might  be.  Accordingly,  there  can  be no  assurance  of  the
      Company's future success.

                                       F-11
<PAGE>

SUNPHARM CORPORATION
(A DEVELOPMENT STAGE COMPANY)

NOTES TO FINANCIAL STATEMENTS
YEARS ENDED  DECEMBER 31, 1998 AND 1997 AND THE PERIOD FROM MAY 3, 1990 (DATE OF
INCORPORATION) TO DECEMBER 31, 1998 (CONTINUED)
- - --------------------------------------------------------------------------------

      In August 1994,  the board of directors  authorized  a  1.558-for-1  stock
      split  of all  outstanding  stock,  increased  the  number  of  shares  of
      authorized  common  stock to  25,000,000  and changed the par value of the
      common  stock to  $.0001  per  share,  all of which  was  approved  by the
      stockholders  in October  1994.  All share and per share amounts have been
      retroactively restated to reflect the stock split for all years presented.

2.    SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

      BASIS  OF  PRESENTATION  -  The  financial  statements  are  presented  in
      accordance with generally accepted  accounting  principles,  which require
      management  to  make  estimates  that  affect  the  reported  amounts  and
      contingency disclosures in the financial statements.  Actual results could
      differ from these estimates.

      PATENT COSTS - The Company  reimburses the University of Florida  Research
      Foundation,  Inc. ("UFRFI"),  for direct expenses related to the Company's
      licensed  patents.  Patent  costs  consist of legal fees and other  direct
      costs  incurred  in  filing,  prosecuting  and  maintaining  the  licensed
      patents.  These costs are charged  directly  to research  and  development
      expense.

      RESEARCH AND DEVELOPMENT - Sponsored  research  payments are recognized as
      revenue when the research  underlying  such  payments has been  performed.
      Research and  development  expenses are charged to operations as incurred.
      Research and development expenses principally include, among other things,
      consulting fees and cost reimbursements to UFRFI, preclinical and clinical
      testing of  compounds  under  investigation,  and salaries and benefits of
      employees engaged in research and development activities.

      PROPERTY AND  EQUIPMENT - Office and  laboratory  equipment  and leasehold
      improvements are carried at cost less accumulated  depreciation,  which is
      computed on a straight-line  basis over the estimated  useful lives of the
      related assets. The useful lives generally fall between 5 and 10 years.

      EARNINGS PER SHARE - During the year ended  December 31, 1997, the Company
      adopted  SFAS No. 128,  "Earnings  per Share" (SFAS 128).  This  Statement
      establishes  standards  for computing  and  presenting  earnings per share
      ("EPS") and applies to all  entities  with  publicly  held common stock or
      potential  common  stock.  This  Statement  replaces the  presentation  of
      primary  EPS and fully  diluted EPS with a  presentation  of basic EPS and
      diluted EPS, respectively.  Basic EPS excludes dilution and is computed by
      dividing earnings available to common stockholders by the weighted-average
      number of common  shares  outstanding  for the  period.  Similar  to fully
      diluted EPS,  diluted EPS reflects the  potential  dilution of  securities
      that could share in the earnings. Since the Company has experienced losses
      since  inception,  there is no dilutive  effect of any of its common stock
      equivalents. Accordingly, only basic EPS is shown.

                                       F-12
<PAGE>

SUNPHARM CORPORATION
(A DEVELOPMENT STAGE COMPANY)

NOTES TO FINANCIAL STATEMENTS
YEARS ENDED  DECEMBER 31, 1998 AND 1997 AND THE PERIOD FROM MAY 3, 1990 (DATE OF
INCORPORATION) TO DECEMBER 31, 1998 (CONTINUED)
- - --------------------------------------------------------------------------------

      STOCK OPTIONS,  WARRANTS AND SARS - Effective January 1, 1996, the Company
      adopted SFAS No. 123,  "Accounting  for  Stock-Based  Compensation"  (SFAS
      123).  SFAS 123  establishes a fair value based method of  accounting  for
      stock-based employee compensation plans; however, it also allows an entity
      to  continue  to  measure  compensation  cost for  those  plans  using the
      intrinsic  value  based  method of  accounting  prescribed  by  Accounting
      Principles  Board ("APB") Opinion No. 25,  "Accounting for Stock Issued to
      Employees."  Under  the fair  value  based  method,  compensation  cost is
      measured  at the  grant  date  based  on the  value  of the  award  and is
      recognized over the service  period,  which is usually the vesting period.
      The Company has  elected to  continue  to account for its  employee  stock
      compensation  plans under APB Opinion No. 25 with pro forma disclosures of
      net earnings and earnings per share,  as if the fair value based method of
      accounting defined in SFAS 123 has been applied.

      RECENTLY  ADOPTED  ACCOUNTING  STANDARDS  - In June  1997,  the  Financial
      Accounting  Standards  Board  issued  Statement  of  Financial  Accounting
      Standards  No. 130,  "Reporting  Comprehensive  Income"  ("SFAS No.  130")
      effective for fiscal years beginning after December 15, 1997. SFAS No. 130
      requires  that  all  items  that  are  required  to  be  recognized  under
      accounting  standards as components of comprehensive income be reported in
      a financial  statement that is displayed with the same prominence as other
      financial statements.  SFAS No. 130 does not require a specific format for
      that  financial  statement but requires  that an entity  display an amount
      representing total comprehensive  income for the period in that statement.
      SFAS No. 130 requires that an entity classify items of other comprehensive
      income by their  nature  in a  financial  statement.  For  example,  other
      comprehensive income may include foreign currency and unrealized gains and
      losses on certain investments in debt and equity securities.  In addition,
      the accumulated  balance of other  comprehensive  income must be displayed
      separately  from retained  earnings and additional  paid in capital in the
      equity section of a statement of financial position.  Adoption of SFAS No.
      130 did not have a material impact on the financial statements.

      In June 1997,  the Financial  Accounting  Standards  Board issued SFAS No.
      131, "Disclosures about Segments of an Enterprise and Related Information"
      ("SFAS No. 131")  effective for fiscal years  beginning after December 15,
      1997. SFAS No. 131 establishes  standards for reporting  information about
      operating  segments in annual financial  statements and requires  selected
      information  about operating  segments in interim financial reports issued
      to  shareholders.  It also establishes  standards for related  disclosures
      about  products  and  services,  geographic  areas  and  major  customers.
      Operating  segments are defined as components of an enterprise about which
      separate financial information is available that is evaluated regularly by
      the chief operating  decision maker in deciding how to allocate  resources
      and in assessing  performance.  SFAS No. 131 requires reporting of segment
      profit or loss,  certain  specific  revenue and expense  items and segment
      assets. It also requires  reconciliations of total segment revenues, total
      segment profit or loss, total segment assets,  and other amounts disclosed
      for  segments  to   corresponding   amounts   reported  in  the  financial
      statements.  The  Company  is in one  business  segment  and  follows  the
      requirements of SFAS No. 131, "Disclosures about Segments of an Enterprise
      and Related Information".

                                      F-13
<PAGE>

SUNPHARM CORPORATION
(A DEVELOPMENT STAGE COMPANY)

NOTES TO FINANCIAL STATEMENTS
YEARS ENDED  DECEMBER 31, 1998 AND 1997 AND THE PERIOD FROM MAY 3, 1990 (DATE OF
INCORPORATION) TO DECEMBER 31, 1998 (CONTINUED)
- - --------------------------------------------------------------------------------

      In February  1998, the FASB issued SFAS No. 132,  "Employer's  Disclosures
      about  Pensions  and Other  Postretirement  Benefits"  ("SFAS  No.  132"),
      effective for fiscal years  beginning  after  December 15, 1997.  SFAS 132
      revises  employer  disclosures  about  pension  and  other  postretirement
      benefit plans.  It does not change the measurement or recognition of those
      plans.  This  statement  standardizes  the  disclosure   requirements  for
      pensions  and other  postretirement  benefits  to the extent  practicable,
      requires additional  information on changes in the benefit obligations and
      fair values of plan assets that will  facilitate  financial  analysis  and
      eliminates  certain  disclosures.  Restatement of disclosures  for earlier
      periods  is  required.  Adoption  of SFAS No.  132 did not have a material
      impact on the financial statements.

      NEW  ACCOUNTING  STANDARDS  - In June 1998,  the FASB issued SFAS No. 133,
      "Accounting for Derivative  Instruments and Hedging Activities" ("SFAS No.
      133"),  effective for fiscal years beginning after June 15, 1999. SFAS No.
      133  requires  companies  to record  derivatives  on the balance  sheet as
      assets and liabilities,  measured at fair value. Gains or losses resulting
      from changes in the values of those  derivatives  would be  accounted  for
      depending on the use of the  derivative and whether it qualifies for hedge
      accounting. The Company has not determined the effect of this statement on
      its financial statement disclosure.

3.    INITIAL PUBLIC OFFERING AND SUBSEQUENT SECURITIES OFFERINGS

      On January 12,  1995,  the Company  completed  an IPO of  1,100,000  units
      ("Unit")  at $7.00  per  Unit.  Each  Unit  consisted  of one share of the
      Company's  common stock and one Redeemable  Common Stock Purchase  Warrant
      ("IPO Warrant"), which entitled the holder to purchase one share of common
      stock at $8.75 per share until  expiration  on April 13, 1998, as extended
      from the original  expiration  of January 12, 1998.  The IPO Warrants have
      been subject to redemption by the Company  commencing January 1996 at $.05
      per Warrant, providing the closing bid price of the Company's common stock
      exceeds  $12.25 per share for 20  consecutive  trading days ending  within
      five days of the notice of redemption. Additionally, on February 16, 1995,
      the underwriter of the offering (the "Representative") exercised an option
      to   purchase   an   additional   165,000   Units   at   $7.00   per  Unit
      (Representative's over-allotment option).

      Proceeds from the Company's IPO were approximately $7,200,000 of cash, net
      of underwriting costs and other offering costs of $1,655,000.  Of such net
      proceeds,  approximately  $1,793,000  were used to repay  the  outstanding
      indebtedness (including accrued interest and certain fees) of the Company.
      In  addition,  other  expenses  which  were  paid  included  approximately
      $310,000  for human  clinical  trials of DEHOP and  DENSPM,  $150,000  for
      research and development of other potential products, $240,000 for general
      corporate expenses, and approximately $210,000 to pay royalties to UFRFI.

      In connection  with the IPO, the Company sold to the  Representative,  for
      nominal  consideration,  a unit purchase  option to purchase up to 110,000
      Units  substantially  identical  to the Units sold in the  offering in all
      respects,  except that each warrant  included in the unit purchase  option
      entitled the holder to purchase

                                       F-14
<PAGE>

SUNPHARM CORPORATION
(A DEVELOPMENT STAGE COMPANY)

NOTES TO FINANCIAL STATEMENTS
YEARS ENDED  DECEMBER 31, 1998 AND 1997 AND THE PERIOD FROM MAY 3, 1990 (DATE OF
INCORPORATION) TO DECEMBER 31, 1998 (CONTINUED)
- - --------------------------------------------------------------------------------

      one share of common stock at $11.375 per share.  The unit purchase  option
      will be exercisable  during the four-year  period  commencing  January 12,
      1996, at an exercise price of $11.20 per Unit.

      Also,  during the five-year  period from the date of the offering,  in the
      event the Representative originates a financing or a merger,  acquisition,
      joint  venture,   strategic   alliance   introduction   or  other  similar
      transaction to which the Company is a party, the  Representative  would be
      entitled to a finder's  fee in  consideration  of the  origination  of the
      transaction.  The fee is based upon a percentage of the consideration paid
      in the transaction  or, in the case of an  introduction  to a customer,  a
      five-year  royalty on sales. In both instances,  the  consideration  would
      consist of 5% of the first $1,000,000,  4% of the next $1,000,000,  and 3%
      of any amount in excess of $2,000,000.

      Upon the  closing  of the IPO in January  1995,  the Series A and Series B
      Redeemable Convertible Preferred Stock outstanding automatically converted
      into 479,700 and 154,400 shares of common stock, respectively. The Company
      presently has 2,200,000 shares of undesignated serial preferred stock
      authorized, with none issued and outstanding.

      During the year ended December 31, 1996,  the Company  completed a private
      placement of 537,623 units  pursuant to Regulation D of the Securities Act
      of 1933 for  $5.50  per  Unit.  Each  unit  consists  of one  share of the
      Company's  common stock and one redeemable  Common Stock Purchase  Warrant
      ("1996  Warrant").  The 1996 Warrants  included in these units expire four
      years  from the date of  issuance  and have  exercise  prices of $5.50 per
      share  until  the  anniversary  date,  $6.50 per  share  until the  second
      anniversary  date, and $7.50 per share  thereafter.  The 1996 Warrants are
      subject to redemption  by the Company at $.01 per 1996  Warrant,  provided
      the Company's common stock closes at a price of $8.50, $9.50 or $10.50 per
      share for  twenty  consecutive  days  during the  second,  third or fourth
      years, respectively, of the term of the 1996 Warrant.

      Proceeds  from the private  placement as well as proceeds from the warrant
      exchange discussed in Note 7 were approximately $3,095,000 in cash, net of
      placement agent and other offering costs of approximately $355,000.

      During the year ended December 31, 1997, the Company sold 1,948,286 units,
      each  consisting  of one  share  of the  Company's  common  stock  and one
      redeemable  Common Stock Purchase  Warrant ("1997  Warrant") for $3.50 per
      unit.  The 1997 Warrants  included in the units expire five years from the
      date of  issuance.  In case of a  "cashless  exercise,"  the 1997  Warrant
      exercise  price is $4.00 per share  plus forty  percent of the  difference
      between the current trading price of the Company's common stock and $4.00;
      in all other  cases,  the 1997 Warrant  exercise  price is $4.00 per share
      plus thirty percent of the difference between the current trading price of
      the  Company's  common stock and $4.00.  The 1997  Warrants are subject to
      redemption  by the Company at the exercise  price,  provided the Company's
      common stock closes at a price of $16.00,  $20.00, or $28.00 per share for
      twenty consecutive days during the second,

                                       F-15
<PAGE>

SUNPHARM CORPORATION
(A DEVELOPMENT STAGE COMPANY)

NOTES TO FINANCIAL STATEMENTS
YEARS ENDED  DECEMBER 31, 1998 AND 1997 AND THE PERIOD FROM MAY 3, 1990 (DATE OF
INCORPORATION) TO DECEMBER 31, 1998 (CONTINUED)
- - --------------------------------------------------------------------------------

      third,  fourth  or  fifth  years,  respectively,  of the  term of the 1997
      Warrant.  Proceeds  from the private  placement  were  $6,519,250,  net of
      placement agent and other offering costs of $324,500.

      On  November  12,  1998,  the  Company  sold  300,000  shares  of Series A
      Redeemable  Convertible  Preferred Stock  ("Preferred  Stock") and 853,565
      shares of  Common  Stock to  certain  institutions  and  other  accredited
      investors  in a  Private  Placement  pursuant  to  Regulation  D under the
      Securities  Act of 1933.  The purchase  price for the Preferred  Stock and
      Common Stock sold in the Private Placement consisted of $1,200,000 in cash
      and the  surrender by the investors of  redeemable  Common Stock  Purchase
      Warrants  originally  issued in the Company's March 1997 private placement
      financing (the "1997  Warrants").  Shares of Series A Preferred  Stock are
      initially  convertible  to Common  Stock on a 1-for-1  basis,  subject  to
      customary antidilution adjustments. Dividends shall accrue on the Series A
      Preferred  Stock at the rate of 8% per annum.  In the event of liquidation
      dissolution,  or  winding  up of the  Company,  or,  at the  option of the
      holders of the Preferred  Stock, a consolidation  or merger of the Company
      or a sale of all or substantially  all of its assets,  the Preferred Stock
      will be entitled to receive in preference to the Company's Common Stock an
      amount per share  equal to the  original  purchase  price plus any accrued
      dividends per share.

      Redemption of the Preferred Stock is at the request of holders of at least
      33-1/3% of such shares outstanding,  which request may be made at any time
      two years following closing of the Private Placement. In the event of such
      request,  the  Company  shall be  required  to redeem  all of the Series A
      Preferred Stock held by the requesting holders at a redemption price equal
      to $4.00 per share (subject to adjustment), plus any accrued dividends per
      share. The redemption price may be paid, at the Company's  option, in cash
      or in shares of the Company's Common Stock. The Company's  intention is to
      make such  redemption  in  Common  Stock,  and  accordingly  the  Series A
      Preferred Stock has been included in stockholders' equity. Proceeds to the
      Company form this Private Placement were approximately $1,160,000,  net of
      legal fees of $40,000.

4.    INVESTMENTS

      At  December  31,  1998 and  1997,  the  Company's  investments  consisted
      primarily of United States  government  agency  obligations and high-grade
      commercial paper. These investments were considered as available for sale,
      and cost plus accrued interest approximated fair market value. At December
      31, 1998 and 1997, these securities had maturities of less than one year.

5.    NOTES PAYABLE

      In  January  and March  1993,  the  Company  issued  notes  payable in the
      aggregate  principal  amount of $522,500  primarily to SunPharm  Investors
      L.P., a limited partnership in which 7% of the funds loaned to the Company
      were contributed by existing stockholders of the Company. Costs associated
      with  this  issuance  totaled  $57,500.  There  were also  stock  purchase
      warrants  issued as discussed  in Note 7. The notes bore  interest at 9.5%
      through January 1995, when they were repaid.

                                       F-16
<PAGE>

SUNPHARM CORPORATION
(A DEVELOPMENT STAGE COMPANY)

NOTES TO FINANCIAL STATEMENTS
YEARS ENDED  DECEMBER 31, 1998 AND 1997 AND THE PERIOD FROM MAY 3, 1990 (DATE OF
INCORPORATION) TO DECEMBER 31, 1998 (CONTINUED)
- - --------------------------------------------------------------------------------

      In August and September  1994,  two directors of the Company loaned $5,000
      and $50,000,  respectively, to the Company. The loans were repaid from the
      proceeds  of the  Bridge  Financing  discussed  below.  In  addition,  the
      directors  were  granted   warrants  to  acquire  500  and  5,000  shares,
      respectively, of common stock at an exercise price of $5.50.

      On September 27, 1994, the Company  issued notes totaling  $1,000,000 as a
      bridge  financing  for the IPO (the  "Bridge  Notes").  The holders of the
      Bridge Notes also received  warrants to purchase  228,573 shares of common
      stock at an exercise  price of $4.375 per share.  The  estimated  value of
      $600,000 for the warrants was recorded as additional  paid-in  capital and
      deferred  offering  costs during  1994.  Proceeds of the Bridge Notes were
      $825,000,  net of a $100,000 placement fee paid to the placement agent and
      $75,000 of offering costs.  The total deferred  offering costs of $775,000
      were  charged to expense upon  repayment of the Bridge Notes in 1995.  The
      Bridge  Notes bore  interest  at an annual  rate of 10% and were repaid in
      January and February 1995 from the proceeds of the IPO.

      In November  and  December  1994,  two  directors  of the  Company  loaned
      $100,000  and  $75,000,  respectively,  to the  Company.  The  notes  bore
      interest  at 12% per  annum  and  were  repaid  from the  proceeds  of the
      Offering in January 1995. In addition,  the directors  were granted 10,000
      and 7,500 warrants,  respectively, to acquire shares of common stock at an
      exercise  price of $7.00.  The  warrants  were not  exercisable  until the
      second anniversary of the completion of the IPO.

      In January 1995, two directors of the Company loaned a total of $25,000 to
      the Company. The notes bore interest at 12% per annum and were repaid from
      the proceeds of the IPO. In addition,  the directors were granted warrants
      to acquire 2,500 shares of common stock at an exercise price of $7.00. The
      warrants  were  not  exercisable  until  the  second  anniversary  of  the
      completion of the IPO.

      At December  31, 1998 and 1997,  notes  payable as shown on the  Company's
      balance  sheets  represent  obligations  resulting  from the  financing of
      insurance premiums.

6.    COMMITMENTS AND CONTINGENCIES

      The Company has  entered  into an  agreement  with Dr.  Raymond  Bergeron,
      inventor of the technology which the Company has licensed, under which the
      Company  is  obligated  to pay $8,000  per month for  consulting  services
      through December 1999.

      In March 1993, the Company  entered into an employment  agreement with Mr.
      Stefan Borg. The agreement  provides for an annual base salary of $120,000
      for a three-year  period  beginning  April 1, 1993. The board of directors
      approved  a  $30,000  bonus  upon  the  closing  of the  bridge  financing
      discussed in Note 5 and,  effective  June 1, 1994,  the annual base salary
      was increased to $132,000.  In March 1995, the board of directors approved
      a $35,000 bonus for services performed during the preceding twelve months,
      extended the agreement to March 31, 1997 and agreed to increase the annual
      base salary to $150,000,  effective  April 1, 1995.  In August  1997,  the
      board of  directors  approved  a bonus of  $15,000,  the  grant of  25,000
      incentive stock options (see "1994 Plan" in Note 7) and an increase

                                       F-17
<PAGE>

SUNPHARM CORPORATION
(A DEVELOPMENT STAGE COMPANY)

NOTES TO FINANCIAL STATEMENTS
YEARS ENDED  DECEMBER 31, 1998 AND 1997 AND THE PERIOD FROM MAY 3, 1990 (DATE OF
INCORPORATION) TO DECEMBER 31, 1998 (CONTINUED)
- - --------------------------------------------------------------------------------

      in annual base salary to $200,000  effective April 1, 1997. The employment
      agreement with Mr. Borg continues in effect on a year-to-year basis unless
      terminated.

      On December 20, 1995, Dean L. Rider, M.D. ("Rider"),  a stockholder of the
      Company,  filed suit against the Company and Stefan Borg in Superior Court
      for the City and County of San Francisco, California, seeking compensatory
      damages of over $41 million  and  punitive  damages  based upon an alleged
      agreement  between  SunPharm and Rider.  In June 1996, the Company settled
      this  litigation  with Rider by issuing  Rider  50,000  shares of SunPharm
      common stock.  Such shares have  subsequently  been registered for resale.
      The  issuance  of the shares was  recorded  by a  reduction  in legal fees
      accrued at December 31,  1995,  which  approximated  the fair value of the
      shares  issued.  The Company  believes  that the claims made by Rider were
      without merit,  and did not admit to any wrongdoing in connection with the
      settlement.  The Company agreed to the settlement  because it believed the
      cost of the settlement to be more  economical  than the cost of continuing
      to incur significant legal expenses to defend this matter.

      The Company leases office space,  furniture and equipment  under operating
      leases.  Lease expense for the years ended  December 31, 1998 and 1997 was
      approximately   $83,400  and   $75,500,   respectively.   Future   minimum
      commitments on operating leases at December 31, 1998 are as follows:

                        1999                    $ 110,000
                        2000                      110,000
                        2001                      110,000
                        2002                      110,000
                        2003                      110,000
                                                ---------
                                                $ 550,000
                                                =========
      The  Company  is  subject  to claims  arising  in the  ordinary  course of
      business  but does not believe that any such claims  presently  identified
      will have a material adverse effect on its financial  condition or results
      of operations.

7.    STOCK OPTIONS, WARRANTS AND OTHER INCENTIVE COMPENSATION

      In 1992,  the Company  issued  warrants  to a director to purchase  77,900
      shares of the Company's  common  stock.  The warrants are  exercisable  at
      $1.93 per share.  In connection with certain notes payable issued in 1993,
      the Company issued warrants to purchase  155,021 shares and 133,234 shares
      of the  Company's  common stock at exercise  prices of $1.93 per share and
      $3.21 per share,  respectively.  These warrants have been recorded at zero
      in the  accompanying  financial  statements  as the  value  at the time of
      issuance was de minimus.

      During  1996,  the  Company  offered  the  Bridge  Notes  warrant  holders
      discussed in Note 5 and SunPharm  Investors L.P.  discussed above a thirty
      percent  reduction in their  applicable  exercise  price if they exercised
      their  warrants  prior to December 31, 1996.  Additionally,  for each four
      warrants exercised, a

                                       F-18
<PAGE>

SUNPHARM CORPORATION
(A DEVELOPMENT STAGE COMPANY)

NOTES TO FINANCIAL STATEMENTS
YEARS ENDED  DECEMBER 31, 1998 AND 1997 AND THE PERIOD FROM MAY 3, 1990 (DATE OF
INCORPORATION) TO DECEMBER 31, 1998 (CONTINUED)
- - --------------------------------------------------------------------------------

      warrant identical to those included in the units described in Note 2 would
      be  issued.  As a result of this  warrant  exchange  offer,  62,858 of the
      Bridge Note warrants and 173,863 of SunPharm L.P.  warrants were exercised
      in exchange for 236,721 shares of stock and 59,178 new warrants.  Proceeds
      from this transaction were approximately $459,000 of cash, net of offering
      costs of approximately $34,000.

      The  Company's  board of directors  granted stock options to employees and
      other parties to purchase common stock.  Employee  options  generally vest
      over a sixty  month  period or over the term of an  employment  agreement.
      Options  granted to consultants  generally vest over a particular  service
      period or in connection  with certain  milestones.  Also,  certain options
      previously granted had immediate vesting  provisions.  Most options expire
      seven years from the date of grant if not exercised.

      In April 1994,  the board of  directors  of the Company  approved the 1994
      Stock Option Plan (1994 Plan) and reserved  350,550 shares of common stock
      for issuance of stock options to employees and  consultants.  In 1997, the
      board of directors  increased the number of shares reserved by the Plan to
      750,000 shares.

      The 1994 Plan is  composed of  incentive  stock  options and  nonqualified
      stock options. The options generally vest over a two- to five-year period,
      and the incentive  stock  options  expire 10 years from the date of grant.
      For the years ended  December 31, 1998 and 1997,  there were 50,000 shares
      and 124,500 shares granted from this plan, respectively.

      On July 10, 1995, the  stockholders  of the Company  approved the SunPharm
      Corporation  1995  Nonemployee  Directors'  Stock  Option  Plan (the "1995
      Directors'  Plan").  The  maximum  number of shares of common  stock  with
      respect  to which  options  may be  granted  under this plan is 300,000 as
      amended in 1997, subject to appropriate  adjustment upon a reorganization,
      stock split,  recapitalization  or other change in the  Company's  capital
      structure.  Directors who are not employees or  consultants to the Company
      are eligible to receive  nonqualified  stock options which,  in accordance
      with the plan,  must be issued at one hundred  percent  (100%) of the fair
      market  value of the  common  stock of the  Company  on the date of grant.
      Directors who are eligible to receive  options  under the 1995  Directors'
      Plan,  will be entitled to receive an option to purchase  25,000 shares of
      common  stock on the date on which they become a  director.  Additionally,
      eligible  directors  will be entitled to receive  options  annually on the
      date of their  reelection  to the Board of  Directors  to  purchase  5,000
      shares (with an additional  10,000 shares for the Chairman of the Board of
      Directors,  if he is  eligible)  of  common  stock.  For the  years  ended
      December 31, 1998 and 1997,  options to purchase 40,000 and 125,000 shares
      of common stock were granted under the 1995 Directors' Plan.

      In August 1994, the Company elected a director of the Company, and engaged
      him  as a  consultant  to  provide  management,  marketing,  economic  and
      strategic  planning  services during a two-year  period.  The director was
      compensated under such consulting agreement at a rate of $7,500 per month,
      and by the  issuance  of a stock  appreciation  right  ("SAR") for 150,000
      common stock equivalents,  exercisable (commencing in 1996 with respect to
      50% and in 1997 with respect to the  remainder)  in an amount equal to the
      excess of the fair market value of the Company's  common stock on the date
      of exercise  over the initial  public  offering  price of the Units.  Such
      stock appreciation right terminates on January 1, 2000. As

                                       F-19
<PAGE>

SUNPHARM CORPORATION
(A DEVELOPMENT STAGE COMPANY)

NOTES TO FINANCIAL STATEMENTS
YEARS ENDED  DECEMBER 31, 1998 AND 1997 AND THE PERIOD FROM MAY 3, 1990 (DATE OF
INCORPORATION) TO DECEMBER 31, 1998 (CONTINUED)
- - --------------------------------------------------------------------------------

      consideration for his serving on the Board of Directors,  the director was
      granted a five-year stock purchase warrant  ("Warrant") for 225,000 shares
      of common stock of the Company,  such warrant being exercisable at a price
      of $5.50 per share. In 1995, the Company recorded  compensation expense of
      $18,750  and  $28,188  in  connection   with  the  SAR  and  the  warrant,
      respectively,  and due to the terms, may incur additional non-cash charges
      in the  future.  No  compensation  expense  has been  recorded  since 1995
      related to any options,  warrants or SARs based on the quoted market value
      of the Company's common stock.

      During the year ended December 31, 1997,  the Company  issued  warrants to
      two  investment  companies  to purchase  150,000  shares of the  Company's
      common  stock.  The warrants  were valued at  approximately  $90,000 which
      represents  the fair  value of the  services  provided.  Such  amount  was
      expensed  with a  corresponding  increase  to  additional  paid-in-capital
      during the year ended December 31, 1997.

      SFAS NO. 123 REQUIRED DISCLOSURE

      If compensation cost for stock option,  SARs and warrant grants ("Grants")
      had been  determined  based on the fair value at the grant  dates for 1998
      and 1997  consistent  with the  method  prescribed  by SFAS No.  123,  the
      Company's  net loss and loss per share would have been adjusted to the pro
      forma amounts indicated below:

                                                      1998               1997

Net loss                  As reported             $(3,767,392)      $(3,906,425)
                          Pro forma                (4,204,638)       (4,464,082)

Loss per share            As reported                   (0.64)            (0.75)
                          Pro forma                     (0.72)            (0.86)

      Under SFAS No. 123,  the fair value of each Grant is estimated on the date
      of grant using the Black-Scholes  option-pricing  model with the following
      weighted-average   assumptions   used  for   grants   in  1998  and  1997,
      respectively:  Dividend yield of 0% and 0%, expected  volatility of 155.2%
      and  77.8%,  risk-free  interest  rates of 5.28% and 6.33% , and  expected
      lives of 7 and 7 years.

                                       F-20

<PAGE>


SUNPHARM CORPORATION
(A DEVELOPMENT STAGE COMPANY)

NOTES TO FINANCIAL STATEMENTS
YEARS ENDED  DECEMBER 31, 1998 AND 1997 AND THE PERIOD FROM MAY 3, 1990 (DATE OF
INCORPORATION) TO DECEMBER 31, 1998 (CONTINUED)
- - --------------------------------------------------------------------------------

      A  summary  of the  status  of  Grants  under  the  Company's  stock-based
      compensation  plans as of December 31, 1998 and 1997,  and changes  during
      the years ending on those dates is presented below:
<TABLE>
<CAPTION>

                                                                   1998                       1997
                                                        --------------------------  --------------------------
                                                                          WEIGHTED-                   WEIGHTED-
                                                                           AVERAGE                     AVERAGE
                                                                          EXERCISED                   EXERCISED
                                                                GRANTS      PRICE          GRANTS       PRICE

<S>                                                            <C>         <C>           <C>           <C>   
Outstanding at beginning of year                               1,561,390   $ 3.48        1,384,696     $ 3.25

  Granted                                                         90,000     3.19          249,500       3.79
  Exercised                                                      (28,573)    0.40          (72,806)      0.10
  Forfeited                                                      (80,000)    5.42   
                                                               ---------                ----------  


Outstanding at end of year                                     1,542,817     3.42        1,561,390       3.48
                                                              ==========                ==========

Grants exercisable at year-end                                 1,298,384                 1,205,703
                                                              ==========                ==========

Weighted-average fair value of
  Grants granted during the year                              $     3.09                $     2.88
                                                              ==========                ==========

      The following table summarizes information about the outstanding Grants at
December 31, 1998:

                                              GRANTS OUTSTANDING                        GRANTS EXERCISABLE
                                 ----------------------------------------------   -------------------------------
                                     NUMBER         WEIGHTED-                        NUMBER
                                  OUTSTANDING       AVERAGE        WEIGHTED-       EXERCISABLE        WEIGHTED-
                                       AT           REMAINING       AVERAGE            AT              AVERAGE
     RANGE OF                     DECEMBER 31,      CONTRACTUAL    EXERCISE        DECEMBER 31,       EXERCISE
EXERCISE PRICES                       1998          LIFE (YEARS)      PRICE           1998             PRICE

<C>       <C>                       <C>               <C>           <C>               <C>              <C>   
$.0064 to $  .32                    364,873           2.04          $ 0.31            3289,473         $ 0.31
$1.60   to $2.99                    349,070           5.37            1.95             255,558           1.78
$3.00   to $4.50                    178,374           8.56            3.74             119,353           3.71
$5.375 to $5.75                     495,500           2.64            5.52             479,000           5.52
$6.54   to $8.75                    155,000           5.81            7.19             155,000           7.19
                                 ----------                                        -----------

                                  1,542,817                                          1,298,384
                                 ==========                                        ===========
</TABLE>

      Remaining  non-exercisable Grants as of December 31, 1998 become available
as follows:

                                1999                     142,225
                                2000                      36,083
                                2001                      34,000
                                2002                      24,625
                                2003                       7,500
                                                        --------

                                                         244,433
                                                        ========

                                       F-21

<PAGE>

SUNPHARM CORPORATION
(A DEVELOPMENT STAGE COMPANY)

NOTES TO FINANCIAL STATEMENTS
YEARS ENDED  DECEMBER 31, 1998 AND 1997 AND THE PERIOD FROM MAY 3, 1990 (DATE OF
INCORPORATION) TO DECEMBER 31, 1998 (CONTINUED)
- - --------------------------------------------------------------------------------

8.    FEDERAL INCOME TAXES

      The Company has incurred  losses since inception and,  therefore,  has not
      been subject to federal income taxes. As of December 31, 1998, the Company
      has net operating loss (NOL) and tax credit  carryforwards  for income tax
      purposes of approximately  $16,953,000 and $596,000,  respectively,  which
      may  be  available  to  reduce  future   taxable  income  and  future  tax
      liabilities. These carryforwards begin to expire in 2008.

      The Tax Reform Act of 1986 provides for an annual limitation on the use of
      NOL and tax credit  carryforwards  (following  certain ownership  changes)
      that could  significantly  limit the  Company's  ability to utilize  these
      carryforwards.  The Company has made no determination  concerning  whether
      there has been such a cumulative  change in ownership,  and it is possible
      that such a change in ownership  occurred  following the completion of the
      Company's IPO, subsequent private  placements,  and subsequent exercise of
      the  Warrants.   Accordingly,   the  Company's   ability  to  utilize  the
      aforementioned  carryforwards  to reduce  future  taxable  income  and tax
      liabilities may be limited.  Additionally,  because United States tax laws
      limit the time during  which these  carryforwards  may be applied  against
      future taxes,  the Company may not be able to take full advantage of these
      attributes for federal income tax purposes.

      As the  Company has had  cumulative  losses and there is no  assurance  of
      future taxable income, a valuation allowance has been established to fully
      offset the  deferred  tax asset  related to the net  operating  losses and
      other  items.  The  components  of the  Company's  deferred  tax assets at
      December 31, 1998 and 1997 are as follows:

                                          1998         1997

Net operating loss carryforwards       $6,709,000   $4,997,000
Research and development tax credits      596,000      464,000
Deferred compensation                     326,000      326,000
                                       ----------   ----------
          Total deferred tax assets     7,631,000    5,787,000

Less valuation allowance                7,631,000    5,787,000
                                       ----------   ----------

Net deferred tax assets                $       --   $       --
                                       ==========   ==========

9.    RESEARCH AND DEVELOPMENT

      In 1991,  the  Company  issued  311,600  shares of common  stock to UFRFI,
      recorded at $2,000, for exclusive, worldwide license agreement rights. The
      Company  also paid a  maintenance  fee to UFRFI in the  amount of  $50,000
      which  was  charged  to  research  and  development  expense.  This fee is
      credited toward sponsored  research  payments and/or  royalties.  In March
      1993, the license  agreement was amended to provide for additional  patent
      rights for the Company in  exchange  for the  Company's  payment of patent
      costs incurred by UFRFI prior to the  amendment,  a license fee of $40,000
      payable to UFRFI

                                       F-22

<PAGE>


SUNPHARM CORPORATION
(A DEVELOPMENT STAGE COMPANY)

NOTES TO FINANCIAL STATEMENTS
YEARS ENDED  DECEMBER 31, 1998 AND 1997 AND THE PERIOD FROM MAY 3, 1990 (DATE OF
INCORPORATION) TO DECEMBER 31, 1998 (CONTINUED)
- - --------------------------------------------------------------------------------

      upon execution of the  amendment,  the issuance of 31,160 shares of common
      stock valued at $10,000 and an increase in annual  maintenance fee payable
      to UFRFI from $50,000 to $100,000.  In September  1996, this agreement was
      further  amended  providing  for more  patent  rights  for the  Company in
      exchange for the  Company's  payment of a one-time  license fee of $50,000
      and an increase in the annual maintenance to $200,000 beginning in 1997.

      The Company has also entered into a research agreement with UFRFI. For the
      years ended  December  31, 1996 and 1995,  the Company  paid  $535,000 and
      $869,000,   respectively,  to  UFRFI  under  the  terms  of  the  research
      agreement.  The  amount  paid  in 1995  includes  the  maintenance  fee of
      $100,000  for  1996.  In  September   1996,  this  agreement  was  amended
      concurrently  with the license  agreement  described  above for  increased
      sponsored  research  payments  related  to  the  Company's  products  from
      $625,000  in 1995 to $641,000  in 1996,  $854,250 in 1997 and  $875,000 in
      1998. These expenses are charged to operations as incurred. Failure to pay
      such costs could result in termination of the license agreement rights. If
      UFRFI were to terminate the license,  the Company's  rights to manufacture
      and market the technology and related products would terminate and such an
      event would have a material  adverse  effect on the Company.  In 1995, the
      Company paid $50,000 to UFRFI for an additional license,  described below.
      The  Company  also  paid  UFRFI  $163,000  and  $210,00  in 1998 and 1997,
      respectively, for reimbursement of patent costs.

      The Company  agreed to pay a royalty on net sales of licensed  products up
      to 6 percent  of net sales for each  product.  A royalty  of 28 percent of
      sublicensee  payments,  but no less  than 2  percent  of net sales by such
      sublicensee,  will  also be  payable  to UFRFI.  The  Company  paid  UFRFI
      $210,000 in royalties in 1995, which were payable as a result of licensing
      fees  received in 1993.  At  December  31, 1996 the Company had accrued an
      additional  $280,000 liability to UFRFI for sublicense payments related to
      the $1 million  Warner  Lambert  milestone  payment  earned in 1996.  Such
      amount was paid in 1997.

      On May 1, 1993,  the Company  entered into a  sublicensing  agreement with
      Warner-Lambert.  The agreement  grants  Warner-Lambert  the right of first
      refusal in the event the Company decides to develop certain other licensed
      products  under certain  circumstances.  Under the terms of the agreement,
      Warner-Lambert paid the Company $100,000 in May 1993 upon the execution of
      the  agreement  and  $750,000 in October 1993 related to the filing of the
      investigational  new drug  application.  The payments  were  recognized as
      revenue  when the  payments  were  received.  Additional  payments  may be
      received  for  the  completion  of  certain  scientific  milestones.   The
      agreement  provides for Warner-Lambert to pay the Company a royalty on net
      sales,  as  defined.  On March 1, 1994,  Warner-Lambert  paid the  Company
      $750,000 in  consideration  for the  Company's  research  and  development
      activities performed. In 1996, the Company earned an additional $1 million
      from Warner  Lambert,  of which  $500,000  was  receivable  as of December
      31,1996 and was collected in January,  1997.  The agreement will terminate
      on the later of the last  expiration date of a licensed patent or 10 years
      from Warner-Lambert's marketing of a licensed product.

                                       F-23

<PAGE>

SUNPHARM CORPORATION
(A DEVELOPMENT STAGE COMPANY)

NOTES TO FINANCIAL STATEMENTS
YEARS ENDED  DECEMBER 31, 1998 AND 1997 AND THE PERIOD FROM MAY 3, 1990 (DATE OF
INCORPORATION) TO DECEMBER 31, 1998 (CONTINUED)
- - --------------------------------------------------------------------------------

      In  February  1994,  the  Company  entered  into an  exclusive  sublicense
      agreement  with Nippon Kayaku.  Upon  execution of the  agreement,  Nippon
      Kayaku paid the Company  $225,000 for research and development  performed.
      The sponsored  research payment was recognized as revenue when the payment
      was  received.  Additional  payments may be payable to the Company for the
      completion of certain  scientific  milestones.  The agreement provides for
      Nippon Kayaku to pay the Company a royalty on net sales, as defined.

      In addition,  Nippon  Kayaku will  reimburse  the Company for direct costs
      incurred for preclinical studies performed prior to the agreement.  Nippon
      Kayaku  will  also pay a  running  royalty  of 2  percent  of net sales as
      defined for 10 years in the event that Nippon Kayaku elects to manufacture
      the  product.  The  agreement  will  terminate  on the  later  of the last
      expiration of a licensed patent or 10 years from Nippon Kayaku's marketing
      of a licensed product in Japan.

      A director was issued  options with an exercise price of $.32 per share to
      purchase  77,900 shares of common stock in  connection  with the exclusive
      sublicense  agreement with Nippon Kayaku.  The original  option  agreement
      stipulated  that the  options  vested  upon the  completion  of  specified
      milestones  and,  accordingly,  compensation  expense was recorded for the
      portion of the options  that had not vested  through  September  1994,  at
      which time the Company amended the agreement to reflect vesting based upon
      time or the completion of specified milestones (see Note 7).

10.   SUBSEQUENT EVENTS (UNAUDITED)

      SURRENDER OF PURCHASE  OPTION - On February 16, 1999,  the  underwriter of
      the Company's IPO agreed to surrender a purchase option for 110,000 shares
      of Common Stock exercisable at $11.20 per share,  which it had acquired in
      connection  with the IPO and which was due to expire on January 12,  2000.
      In exchange for surrender of this option,  the Company  agreed to issue an
      equal number of shares to the  underwriter  at $0.60 per share,  for total
      proceeds of $66,000.

      PRIVATE PLACEMENT OF PREFERRED STOCK AND COMMON STOCK - On March 31, 1999,
      the  Company  sold  66,667  shares  of  Series B  Reedeemable  Convertible
      Preferred  Stock at $4.00 per share,  ("Series B  Preferred")  and 183,333
      shares of Common Stock at $1.273 per share to an institutional investor in
      a Private  Placement  pursuant to Regulation D under the Securities Act of
      1933. The shares of Series B Preferred are initially convertible to Common
      Stock on a 1-for-1 basis, subject to customary  antidilution  adjustments.
      Dividends  shall  accrue on the Series B  Preferred  at the rate of 8% per
      annum.  In the event of  liquidation,  dissolution,  or  winding up of the
      Company,  or, at the option of the  holders of the Series B  Preferred,  a
      consolidation  or merger of the Company or a sale of all or  substantially
      all of its  assets,  the  Series B  Preferred  Stock will be  entitled  to
      receive in preference  to the  Company's  Common Stock an amount per share
      equal to the original purchase price plus any accrued dividends per share.

      Redemption  of the Series B  Preferred  is at the request of holders of at
      least 33-1/3% of such shares outstanding, which request may be made at any
      time two years following closing of the Private Placement. In the event of
      such request,  the Company shall be required to redeem all of the Series B
      Preferred Stock


                                       F-24
<PAGE>

SUNPHARM CORPORATION
(A DEVELOPMENT STAGE COMPANY)

NOTES TO FINANCIAL STATEMENTS
YEARS ENDED  DECEMBER 31, 1998 AND 1997 AND THE PERIOD FROM MAY 3, 1990 (DATE OF
INCORPORATION) TO DECEMBER 31, 1998 (CONTINUED)
- - --------------------------------------------------------------------------------

      held by the  requesting  holders at a redemption  price equal to $4.00 per
      share (subject to adjustment),  plus any accrued  dividends per share. The
      redemption price may be paid, at the Company's option in cash or in shares
      of the  Company's  Common Stock.  The Company's  intention is to make such
      redemption in Common  Stock,  and  accordingly  the Series B Preferred has
      been included in  stockholder's  equity.  Net proceeds to the Company from
      this  Private  Placement  were  $485,000,  net of  fees  of  approximately
      $15,000.

      Following  is a  condensed  pro forma  balance  sheet of the Company as of
      December  31,  1998,  after giving  effect to the  transactions  disclosed
      above.
<TABLE>
<CAPTION>

                                                                             PRO FORMA
                                                                         DECEMBER 31, 1998
                                                                         -----------------
<S>                                                                        <C>         
ASSETS
Cash and short-term investments                                            $  2,250,200
Other current assets                                                            162,734
Property and equipment, net                                                      57,933
Other assets                                                                    134,140
                                                                           ------------
                                                                           $  2,605,007
                                                                           ============

LIABILITIES AND STOCKHOLDERS' EQUITY
Current liabilities                                                        $    451,913
Stockholders' equity:
Undesignated Preferred Stock, par value $.001 per share;
  2,000,000 shares authorized; 0 shares issued and outstanding
Series A Preferred Stock, par value $.001 per share;
  300,000 shares authorized;  300,000 shares issued and outstanding                 300
Series B Preferred Stock, par value $.001 per share;
  200,000 authorized; 66,667 shares issued and outstanding                           67
Common Stock, par value $.0001 per share;
  25,000,000 shares authorized, 6,914,728 shares issued and outstanding             691
Additional paid-in capital                                                 $ 21,422,482
Accumulated deficit during development stage                                (19,270,496)
                                                                           ------------
  Total stockholders' equity                                               $  2,153,094
                                                                           ============
                                                                           $  2,605,007
                                                                           ============
</TABLE>

                                        * * * * *

                                           F-25



                    CERTIFICATE OF DESIGNATION, PREFERENCES,

                                  AND RIGHTS OF

                 SERIES A REDEEMABLE CONVERTIBLE PREFERRED STOCK

                                       OF

                              SUNPHARM CORPORATION

         SUNPHARM CORPORATION, a Delaware corporation (the "Corporation"),  does
hereby certify that,  pursuant to authority  conferred on the Board of Directors
of the Corporation by the Certificate of Incorporation  of the  Corporation,  as
amended,  and  pursuant  to the  provisions  of  Section  151 of  Title 8 of the
Delaware  Code,  the Board of  Directors,  at a meeting of its  members  held on
November  10,  1998  adopted  a  resolution   providing  for  the   designation,
preferences  and  relative,   participating,   optional  or  other  rights,  and
qualifications,  limitations or restrictions  thereof,  of 300,000 shares of the
Corporation's Preferred Stock, par value $.001 per share, which resolution is as
follows:

RESOLVED:         That  pursuant to the  authority  granted to and vested in the
                  Board of Directors of the  Corporation in accordance  with the
                  provisions of the Certificate of Incorporation, as amended, of
                  the  Corporation,  the  Board  hereby  designates  a series of
                  Preferred Stock of the Corporation,  par value $.001 per share
                  (the "Preferred  Stock"),  consisting of 300,000 shares of the
                  authorized  unissued  Preferred  Stock, as Series A Redeemable
                  Convertible  Preferred  Stock (the "Series A Preferred"),  and
                  hereby fixes such  designation  and number of shares,  and the
                  powers, preferences and relative,  participating,  optional or
                  other  rights,   and  the   qualifications,   limitations  and
                  restrictions thereof as set forth below, and that the officers
                  of  the  Corporation,  and  each  acting  singly,  are  hereby
                  authorized,  empowered and directed to file with the Secretary
                  of  State  of  the  State  of   Delaware  a   Certificate   of
                  Designation, Preferences and Rights of the Series A Redeemable
                  Convertible Preferred Stock, as such officer or officers shall
                  deem  necessary or advisable to carry out the purposes of this
                  Resolution.

         SERIES A  REDEEMABLE  CONVERTIBLE  PREFERRED  STOCK.  The  preferences,
privileges and restrictions  granted to or imposed upon the Corporation's Series
A Redeemable  Convertible  Preferred  Stock,  par value $.001 per share,  or the
holders thereof, are as follows:

         1.       LIQUIDATION RIGHTS.

         (a)      TREATMENT AT LIQUIDATION, DISSOLUTION OR WINDING UP.

                  (i) Except as otherwise provided in Section 1(b) below, in the
         event of any  liquidation,  dissolution  or winding  up of the  affairs
         (each event, a "Liquidation Event") of

<PAGE>

         the  Corporation,  whether  voluntary  or  involuntary,  the holders of
         Series A Preferred shall be entitled to be paid first out of the assets
         of  the  Corporation  available  for  distribution  to  holders  of the
         Corporation's   capital  stock  of  all  classes,   before  payment  or
         distribution of any of such assets to the holders of any other class or
         series of the  Corporation's  capital stock  designated to be junior to
         the Series A Preferred,  an amount equal to the original purchase price
         of $4.00 per share of Series A Preferred (which amount shall be subject
         to equitable  adjustment  whenever there shall occur a stock  dividend,
         distribution,  combination of shares, reclassification or other similar
         event with respect to Series A Preferred  and, as so adjusted from time
         to time, is hereinafter  referred to as the "Base  Liquidation  Price")
         plus all dividends accrued or declared but unpaid, to and including the
         date  full  payment  shall  be  tendered  to the  holders  of  Series A
         Preferred with respect to such Liquidation Event.

                  (ii)  Following  payment  in full to the  holders  of Series A
         Preferred of all amounts  distributable  to them under Section  1(a)(i)
         hereof,   the  remaining  assets  of  the  Corporation   available  for
         distribution  to holders of the  Corporation's  capital  stock shall be
         distributed  on a pro rata  basis  among the  holders  of the  Series A
         Preferred on an as converted basis and the holders of the Common Stock.

                  (iii) If the assets of the  Corporation  shall be insufficient
         to permit the payment in full to the  holders of Series A Preferred  of
         all amounts  distributable  to them under Section 1(a)(i) hereof,  then
         the entire assets of the  Corporation  available for such  distribution
         shall be distributed ratably among the holders of Series A Preferred.

         (b) TREATMENT OF REORGANIZATIONS,  CONSOLIDATIONS, MERGERS AND SALES OF
ASSETS.   Except  as  otherwise  provided  in  Subsection  2(d)(vii)  hereof,  a
Reorganization (as defined in Subsection  2(d)(vii) hereof) shall be regarded as
a  Liquidation  Event of the  Corporation  within the meaning of this Section 1,
provided,  however,  that the holders of at least a majority of the  outstanding
shares of the Series A Preferred upon the occurrence of a  Reorganization  shall
have the option to elect the  benefits of  Subsection  2(d)(vii)  hereof for the
Series A Preferred in lieu of receiving  payment in a  Liquidation  Event of the
Corporation  pursuant to this Section 1. The provisions of this  Subsection 1(b)
shall not apply to any  reorganization,  merger or  consolidation  involving (1)
only a change in the state of incorporation of the Corporation,  (2) a merger of
the Corporation with or into a wholly-owned  subsidiary of the Corporation which
is  incorporated  in the United  States of  America,  or (3) an  acquisition  by
merger,   reorganization   or   consolidation,   in  which  the  Corporation  is
substantively  the surviving  corporation  and operates as a going  concern,  of
another  corporation  which is  incorporated in the United States of America and
which is  engaged in a business  similar  to or related to the  business  of the
Corporation  and which  does not  involve a change in the terms of the  Series A
Preferred or of the Common Stock.

         (c) DISTRIBUTIONS OTHER THAN CASH. The amount deemed distributed to the
holders  of  Series  A  Preferred  upon any  Liquidation  Event  (including  any
Reorganization treated as a Liquidation Event pursuant to Section 1(b)) shall be
the cash or the  fair  market  value  of the  property,  rights,  or  securities
distributed to such holders by the acquiring person,  firm, or other entity. The
value of such property,  rights, or other securities shall be determined in good
faith by the Board of Directors of the Corporation;  provided,  however, that in
the event that the amounts 

                                       2

<PAGE>

paid pursuant to Section 1(b) consist of securities of an acquiring corporation,
(i) any shares  received that have been  registered  under the Securities Act of
1933, as amended (the "Securities  Act"), shall be valued at the average closing
price per share for such securities on the 10 days ending on the fifth day prior
to the  consummation  of the  Reorganization  (the  "Closing  Price"),  (ii) any
securities of a class that is registered  under the  Securities  Exchange Act of
1934, as amended (the "Exchange  Act"),  the offer and sale of which shares have
not been  registered  under  the  Securities  Act  shall be valued at 80% of the
Closing Price and (iii) securities of a class that has not been registered under
the Exchange Act shall be valued based on a valuation mutually acceptable to the
Board of Directors of the  Corporation and holders of at least a majority of the
Series A Preferred.

         2. CONVERSION.  The holders of Series A Preferred shall have conversion
rights as follows (the "Conversion Rights"):

         (a)  RIGHT  TO  CONVERT;  CONVERSION  PRICE.  Each  share  of  Series A
Preferred  shall  be   convertible,   without  the  payment  of  any  additional
consideration by the holder thereof and at the option of the holder thereof,  at
any  time  after  the date of  issuance  of such  share,  at the  office  of the
Corporation or any transfer  agent for the Series A Preferred,  into such number
of fully paid and  non-assessable  shares of Common  Stock as is  determined  by
dividing $2.00 by the Conversion Price,  determined as hereinafter  provided, in
effect  at the  time  of  conversion.  The  Conversion  Price  for  purposes  of
calculating  the number of shares of Common Stock  deliverable  upon  conversion
without the payment of any  additional  consideration  by the holder of Series A
Preferred  (the  "Conversion  Price")  shall  initially  be $2.00.  Such initial
Conversion  Price shall be subject to adjustment,  in order to adjust the number
of shares of Common  Stock into which  Series A  Preferred  is  convertible,  as
hereinafter provided.

         (b)  MECHANICS OF  CONVERSION.  Before any holder of Series A Preferred
shall be entitled to convert  the same into full  shares of Common  Stock,  such
holder shall surrender the certificate or certificates therefor,  duly endorsed,
at the  office of the  Corporation  or of any  transfer  agent for the  Series A
Preferred,  and shall give written notice to the Corporation at such office that
such holder  elects to convert the same and shall state therein the name of such
holder or the name or names of the  nominees of such holder in which such holder
wishes the certificate or certificates  for shares of Common Stock to be issued.
No  fractional  shares of Common  Stock shall be issued upon  conversion  of any
shares of Series A Preferred.  In lieu of any fractional  shares of Common Stock
to which the holder would otherwise be entitled,  the Corporation shall pay cash
equal to such fraction  multiplied by the then effective  Conversion  Price. The
Corporation shall, as soon as practicable thereafter,  issue and deliver at such
office to such  holder of Series A  Preferred,  or to such  holder's  nominee or
nominees, a certificate or certificates for the number of shares of Common Stock
to which such holder shall be entitled as aforesaid,  together with cash in lieu
of any fraction of a share.  Such  conversion  shall be deemed to have been made
immediately  prior to the close of business on the date of such surrender of the
shares of Series A Preferred to be converted, and the person or persons entitled
to receive the shares of Common Stock issuable upon conversion  shall be treated
for all purposes as the record  holder or holders of such shares of Common Stock
on such date.

                                       3

<PAGE>

         (c)      [intentionally omitted]

         (d)      ADJUSTMENTS TO CONVERSION PRICE FOR DILUTING ISSUES.

                  (i)      SPECIAL  DEFINITIONS.  For  purposes of this  Section
         2(d), the following definitions shall apply:

                           (A) "OPTION"  shall mean rights,  options or warrants
                  to subscribe for,  purchase or otherwise  acquire Common Stock
                  or Convertible Securities.

                           (B)  "ORIGINAL  ISSUE  DATE"  shall  mean the date on
                  which shares of Series A Preferred were first issued.

                           (C) "CONVERTIBLE SECURITIES" shall mean any evidences
                  of indebtedness,  shares (other than Common Stock and Series A
                  Preferred)   or  other   securities   directly  or  indirectly
                  convertible into or exchangeable for Common Stock.

                           (D)  "ADDITIONAL  SHARES OF COMMON  STOCK" shall mean
                  all shares of Common  Stock  issued  (or,  pursuant to Section
                  2(d)(iii),  deemed to be issued) by the Corporation  after the
                  Original Issue Date,  other than the following  (collectively,
                  "EXCLUDED SHARES"):

                                 (I) shares of Common  Stock  issued or issuable
                           upon the conversion of Series A Preferred;

                                 (II) shares of Common  Stock issued or issuable
                           as a dividend on the Series A Preferred:

                                 (III) by reason of a  dividend,  stock split or
                           other distribution on shares of Common Stock;

                                 (IV) Options to purchase shares of Common Stock
                           issued  or  issuable  to   officers,   employees   or
                           directors  of, or  consultants  to,  the  Corporation
                           pursuant to the  Corporation's  Amended and  Restated
                           1994 Stock Option Plan, the Corporation's Amended and
                           Restated  1995  Nonemployee  Directors'  Stock Option
                           Plan or any  stock  option  plan  of the  Corporation
                           adopted by the Board of Directors of the  Corporation
                           and approved by the  stockholders  of the Corporation
                           after the Original Issue Date;

                                 (V) shares of Common  Stock  issued or issuable
                           upon  the  exercise  of  Options  outstanding  on the
                           Original  Issue  Date or  upon  the  exercise  of the
                           Options referred to in the foregoing clause (IV).

                                       4

<PAGE>

                  (ii) NO ADJUSTMENT OF CONVERSION  PRICE.  No adjustment in the
         number  of  shares  of  Common  Stock  into  which a share of  Series A
         Preferred is convertible  shall be made by adjustment in the Conversion
         Price in respect of the issuance of  Additional  Shares of Common Stock
         or otherwise unless (i) the  consideration  per share for an Additional
         Share of Common Stock issued or deemed to be issued by the  Corporation
         is less  than the  Conversion  Price  in  effect  on the  date of,  and
         immediately  prior to,  the issue of such  Additional  Shares of Common
         Stock  and  (ii),  prior to such  issuance,  the  Corporation  fails to
         receive  written  notice from the holders of at least a majority of the
         then  outstanding  shares of Series A Preferred  agreeing  that no such
         adjustment  shall be made as the result of the  issuance of  Additional
         Shares of Common Stock.

                  (iii) ISSUE OF SECURITIES DEEMED ISSUE OF ADDITIONAL SHARES OF
         COMMON STOCK.

                           (A) OPTIONS AND CONVERTIBLE SECURITIES.  In the event
                  the  Corporation  at any time  after the  Original  Issue Date
                  shall issue any Options or Convertible Securities or shall fix
                  a record date for the determination of holders of any class of
                  securities entitled to receive any such Options or Convertible
                  Securities, then the maximum number of shares (as set forth in
                  the  instrument   relating   thereto  without  regard  to  any
                  provisions  contained  therein for a subsequent  adjustment of
                  such  number) of Common  Stock  (other than  Excluded  Shares)
                  issuable  upon the exercise of such Options or, in the case of
                  Convertible Securities and Options therefor, the conversion or
                  exchange of such Convertible Securities, shall be deemed to be
                  Additional  Shares  of Common  Stock  issued as of the time of
                  such  issue  or, in case such a record  date  shall  have been
                  fixed,  as of the  close  of  business  on such  record  date,
                  provided that  Additional  Shares of Common Stock shall not be
                  deemed to have been issued unless the  consideration per share
                  (determined  pursuant  to  Section  2(d)(v)  hereof)  of  such
                  Additional  Shares  of  Common  Stock  would be less  than the
                  Conversion  Price in  effect  on the  date of and  immediately
                  prior to such issue,  or such record date, as the case may be,
                  and provided further that in any such case in which Additional
                  Shares of Common Stock are deemed to be issued:

                                 (I) No  further  adjustment  in the  Conversion
                           Price  shall  be made  upon the  subsequent  issue of
                           Convertible Securities or shares of Common Stock upon
                           the  exercise  of  such  Options  or   conversion  or
                           exchange of such Convertible Securities;

                                 (II) If such Options or Convertible  Securities
                           by their terms  provide,  with the passage of time or
                           otherwise,  for  any  increase  in the  consideration
                           payable to the Corporation, or decrease in the number
                           of shares of Common Stock issuable upon the exercise,
                           conversion or exchange thereof,  the Conversion Price
                           computed upon the original issue thereof (or upon the
                           occurrence  of a record date with  respect  thereto),
                           and any subsequent adjustments based thereon,  shall,
                           upon  any  such   increase   or

                                       5

<PAGE>

                           decrease becoming effective, be recomputed to reflect
                           such increase or decrease  insofar as it affects such
                           Options or the rights of conversion or exchange under
                           such Convertible Securities;

                           (III) Upon the  expiration of any such options or any
                  rights  of  conversion  or  exchange  under  such  Convertible
                  Securities which shall not have been exercised, the Conversion
                  Price  computed  upon the original  issue thereof (or upon the
                  occurrence  of a record date with  respect  thereto),  and any
                  subsequent   adjustments  based  thereon,   shall,  upon  such
                  expiration, be recomputed as if:

                                 (a) In the case of  Convertible  Securities  or
                           Options for Common Stock the only  Additional  Shares
                           of  Common  Stock  issued  were the  shares of Common
                           Stock,  if any,  actually issued upon the exercise of
                           such  Options or the  conversion  or exchange of such
                           Convertible Securities and the consideration received
                           therefor was the  consideration  actually received by
                           the  Corporation  for the issue of all such  Options,
                           whether  or not  exercised,  plus  the  consideration
                           actually   received  by  the  Corporation  upon  such
                           exercise,  or for the  issue of all such  Convertible
                           Securities   which   were   actually   converted   or
                           exchanged, plus the additional consideration, if any,
                           actually   received  by  the  Corporation  upon  such
                           conversion or exchange; and

                                 (b) In the  case  of  Options  for  Convertible
                           Securities only the Convertible  Securities,  if any,
                           actually issued upon the exercise thereof were issued
                           at the  time  of  issue  of  such  Options,  and  the
                           consideration  received  by the  Corporation  for the
                           Additional Shares of Common Stock deemed to have been
                           then issued was the  consideration  actually received
                           by the Corporation for the issue of all such Options,
                           whether  or not  exercised,  plus  the  consideration
                           deemed  to  have  been  received  by the  Corporation
                           (determined  pursuant  to Section  2(d)(v))  upon the
                           issue of the  Convertible  Securities with respect to
                           which such Options were actually exercised;

                           (IV) No readjustment pursuant to clause (II) or (III)
                  above shall have the effect of increasing the Conversion Price
                  to an amount  which  exceeds  the lower of (a) the  Conversion
                  Price on the original  adjustment  date, or (b) the Conversion
                  Price that would have resulted from any issuance of Additional
                  Shares of Common Stock  between the original  adjustment  date
                  and such readjustment date;

                           (V) In the case of any Options  which expire by their
                  terms not more than 30 days  after the date of issue  thereof,
                  no adjustment of the Conversion  Price shall be made until the
                  expiration  or exercise of all such  Options,  whereupon  such

                                       6

<PAGE>

                  adjustment shall be made in the same manner provided in clause
                  (III) above; and

                           (VI) If such  record  date  shall have been fixed and
                  such Options or  Convertible  Securities are not issued on the
                  date fixed  therefor,  the adjustment  previously  made in the
                  Conversion  Price which  became  effective on such record date
                  shall be  canceled  as of the close of business on such record
                  date, and  thereafter  the Conversion  Price shall be adjusted
                  pursuant to this  Section  2(d)(iii)  as of the actual date of
                  their issuance.

                           (B)  STOCK   DIVIDENDS,   STOCK   DISTRIBUTIONS   AND
                  SUBDIVISIONS. In the event the Corporation at any time or from
                  time to time after the  Original  Issue Date shall  declare or
                  pay any dividend or make any other  distribution on the Common
                  Stock payable in Common Stock or effect a  subdivision  of the
                  outstanding  shares of Common  Stock (by  reclassification  or
                  otherwise than by payment of a dividend in Common Stock), then
                  and in any such event, Additional Shares of Common Stock shall
                  be deemed to have been issued:

                                    (I) In the  case  of any  such  dividend  or
                           distribution, immediately after the close of business
                           on the record date for the  determination  of holders
                           of any class of  securities  entitled to receive such
                           dividend or distribution, or

                                    (II) In the case of any such subdivision, at
                           the close of business on the date  immediately  prior
                           to the  date  upon  which  corporate  action  becomes
                           effective.

                           If such record date shall have been fixed and no part
                  of such  dividend  shall  have  been  paid on the  date  fixed
                  therefor,  the adjustment  previously  made for the Conversion
                  Price  which  became  effective  on such  record date shall be
                  canceled as of the close of business on such record date,  and
                  thereafter the Conversion Price shall be adjusted  pursuant to
                  this  Section  2(d)(iii)  as to the time of actual  payment of
                  such dividend.

                  (iv)     ADJUSTMENT  OF  CONVERSION  PRICE  UPON  ISSUANCE  OF
                  ADDITIONAL SHARES OF COMMON STOCK.

                           (A)  In  the  event  the   Corporation   shall  issue
                  Additional   Shares  of  Common  Stock   (including,   without
                  limitation,  Additional  Shares of Common  Stock  deemed to be
                  issued pursuant to Section 2(d)(iii) but excluding  Additional
                  Shares of Common Stock deemed to be issued pursuant to Section
                  2(d)(iii)(B),  which  event is dealt with in Section  2(d)(vi)
                  hereof),  without  consideration  or for a  consideration  per
                  share less than the applicable  Conversion  Price in effect on
                  the date of and immediately  prior to such issue,  then and in
                  such   event,   such   Conversion   Price  shall  be  reduced,
                  concurrently  with such issue,  to a price  (calculated to the
                  nearest cent)  determined by multiplying such Conversion Price
                  by a fraction,  the numerator of 

                                       7

<PAGE>

                  which  shall be (I) the  number  of  shares  of  Common  Stock
                  outstanding  immediately  prior to such  issue  plus  (II) the
                  number  of  shares  of  Common   Stock  which  the   aggregate
                  consideration  received or deemed to have been received by the
                  corporation  for the  total  number  of  Additional  Shares of
                  Common  Stock so  issued  would  purchase  at such  Conversion
                  Price, and the denominator of which shall be (I) the number of
                  shares of Common Stock  outstanding  immediately prior to such
                  issue  plus  (II) the  number of  Additional  Shares of Common
                  Stock so issued or deemed to be issued.

                           (B) For the purposes of Section  2(d)(iv)(A)  hereof,
                  (i) all shares of Common Stock  issuable  upon  conversion  of
                  shares of Series A Preferred,  and upon exercise of options or
                  conversion  or exchange of  Convertible  Securities  which are
                  part of the Excluded Shares,  outstanding immediately prior to
                  any issue of Additional  Shares of Common Stock,  or any event
                  with respect to which Additional  Shares of Common Stock shall
                  be deemed to be issued,  shall be deemed to be outstanding and
                  (ii) immediately  after any Additional  Shares of Common Stock
                  are  deemed  issued  pursuant  to  Section  2(d)((iii),   such
                  Additional  Shares  of  Common  Stock  shall be  deemed  to be
                  outstanding.

                           (C)   Notwithstanding   anything   to  the   contrary
                  contained herein, the applicable Conversion Price in effect at
                  the time  Additional  Shares  of Common  Stock  are  issued or
                  deemed to be issued  shall not be reduced  pursuant to Section
                  2(d)(iv)(A)  hereof  at  such  time  if  the  amount  of  such
                  reduction  would be an amount  less than  $0.01,  but any such
                  amount  shall be carried  forward and  reduction  with respect
                  thereto made at the time of and together  with any  subsequent
                  reduction  which,  together  with  such  amount  and any other
                  amount or amounts so carried forward, shall aggregate $0.01 or
                  more.

                  (v)  DETERMINATION  OF  CONSIDERATION.  For  purposes  of this
         Section 2(d), the  consideration  received by the  Corporation  for the
         issue of any  Additional  Shares of Common  Stock  shall be computed as
         follows:

                           (A) CASH AND PROPERTY. Such consideration shall:

                                 (I) Insofar as it consists of cash, be computed
                           at the  aggregate  amounts  of cash  received  by the
                           Corporation  excluding  amounts  paid or payable  for
                           accrued interest or accrued  dividends at the time of
                           such issue;

                                 (II)  Insofar as it consists of property  other
                           than  cash,  be  computed  at the fair  market  value
                           thereof at the time of such issue,  as  determined in
                           good faith by the Board of Directors; and

                                 (III) In the event  that  Additional  Shares of
                           Common Stock are issued together with other shares or
                           securities  or other  assets of the

                                       8

<PAGE>

                           Corporation for  consideration  which covers both, be
                           the  proportion  of such  consideration  so received,
                           computed  as  provided in clauses (I) and (II) above,
                           as   determined   in  good  faith  by  the  Board  of
                           Directors.

                           (B)   OPTIONS   AND   CONVERTIBLE   SECURITIES.   The
                  consideration  per  share  received  by  the  Corporation  for
                  Additional  Shares of Common  Stock deemed to have been issued
                  pursuant  to Section  2(d)(iii)(A),  relating  to Options  and
                  Convertible  Securities,  shall be  determined by dividing (I)
                  the  total  amount,  if any,  received  or  receivable  by the
                  Corporation as consideration  for the issue of such Options or
                  Convertible  Securities,  plus the minimum aggregate amount of
                  additional  consideration  (as set  forth  in the  instruments
                  relating  thereto,  without regard to any provision  contained
                  therein for a  subsequent  adjustment  of such  consideration)
                  payable to the  Corporation  upon the exercise of such Options
                  or the conversion or exchange of such Convertible  Securities,
                  or in the case of  Options  for  Convertible  Securities,  the
                  exercise of such Options for  Convertible  Securities  and the
                  conversion or exchange of such Convertible Securities, by (II)
                  the maximum  number of shares of Common Stock (as set forth in
                  the  instruments  relating  thereto,  without  regard  to  any
                  provision  contained  therein for a subsequent  adjustment  of
                  such number) issuable upon the exercise of such Options or the
                  conversion or exchange of such Convertible Securities.

                  (vi)  ADJUSTMENT FOR DIVIDENDS,  DISTRIBUTIONS,  SUBDIVISIONS,
                  COMBINATIONS OR CONSOLIDATIONS OF COMMON STOCK.

                           (A) STOCK  DIVIDENDS,  DISTRIBUTIONS OR SUBDIVISIONS.
                  In the event the Corporation  shall issue Additional Shares of
                  Common  Stock  pursuant  to  Section  2(d)(iii)(B)  in a stock
                  dividend,  stock  distribution or subdivision,  the Conversion
                  Price in  effect  immediately  prior to such  stock  dividend,
                  stock distribution or subdivision shall, concurrently with the
                  effectiveness  of such stock dividend,  stock  distribution or
                  subdivision, be proportionately decreased.

                           (B) COMBINATIONS OR CONSOLIDATIONS.  In the event the
                  outstanding  shares  of  Common  Stock  shall be  combined  or
                  consolidated,  by reclassification or otherwise, into a lesser
                  number  of shares of Common  Stock,  the  Conversion  Price in
                  effect  immediately prior to such combination or consolidation
                  shall, concurrently with the effectiveness of such combination
                  or consolidation, be proportionately increased.

                  (vii) CAPITAL REORGANIZATION,  MERGER OR SALE OF ASSETS. If at
         any time or from time to time there  shall be a capital  reorganization
         of  the  Common   Stock   (other  than  a   subdivision,   combination,
         recapitalization,  reclassification  or exchange of shares provided for
         elsewhere  in this  Section  2) or a  consolidation  or  merger  of the
         Corporation, or a sale of all or substantially all of the assets of the
         Corporation,  other  than a  merger,  consolidation  or  sale of all or
         substantially  all of the assets of the Corporation in a transaction in
         which the  shareholders  of the  Corporation  immediately  prior to the
         transaction  possess  more  than 50%

                                       9

<PAGE>

         of the voting  securities of the surviving  entity (or parent,  if any)
         immediately after the transaction (a "Reorganization"), then, as a part
         of and as a condition to such  Reorganization,  provision shall be made
         so  that  the  holders  of  shares  of the  Series  A  Preferred  shall
         thereafter be entitled to receive upon  conversion of the shares of the
         Series  A  Preferred  the  same  kind  and  amount  of  stock  or other
         securities or property  (including cash) of the Corporation,  or of the
         successor corporation resulting from such Reorganization, to which such
         holder would have been entitled if such holder had converted its shares
         of the Series A Preferred  immediately  prior to the effective  time of
         such Reorganization.  In any such case, appropriate adjustment shall be
         made in the  application of the provisions of this Section 2 to the end
         that the  provisions  of this  Section 2 (including  adjustment  of the
         Conversion  Price  then in  effect  and the  number of shares of Common
         Stock or other securities issuable upon conversion of the shares of the
         Series A Preferred) shall be applicable after such Reorganization in as
         nearly equivalent manner as may be reasonably practicable.

                  In the case of a  transaction  to which  both this  Subsection
         2(d)(vii) and Subsection  1(b) hereof apply,  the holders of at least a
         majority of the  outstanding  shares of the Series A Preferred upon the
         occurrence of a Reorganization shall have the option to elect treatment
         either under this Subsection 2(d)(vii) or under Subsection 1(b) hereof,
         notice of which election  shall be given in writing to the  Corporation
         not less than five (5)  business  days prior to the  effective  date of
         such Reorganization. If no such election is timely made, the provisions
         of Subsection 1(b) and not of this Subsection 2(d)(vii) shall apply.

                  The provisions of this Subsection 2(d)(vii) shall not apply to
         any reorganization, merger or consolidation involving (1) only a change
         in the state of incorporation  of the Corporation,  (2) a merger of the
         Corporation  with or into a wholly-owned  subsidiary of the Corporation
         which is  incorporated  in the  United  States  of  America,  or (3) an
         acquisition by merger,  reorganization or  consolidation,  in which the
         Corporation is substantively the surviving  corporation and operates as
         a going concern,  of another  corporation  which is incorporated in the
         United States of America and which is engaged in a business  similar to
         or  related  to the  business  of the  Corporation  and which  does not
         involve  a change  in the  terms of the  Series A  Preferred  or of the
         Common Stock.

         (e) NO  IMPAIRMENT.  The  Corporation  shall not, by  amendment  of its
Certificate of Incorporation or through any reorganization,  transfer of assets,
consolidation,  merger,  dissolution,  issue or sale of  securities or any other
voluntary action, avoid or seek to avoid the observance or performance of any of
the terms to be observed or performed  hereunder by the Corporation but shall at
all times in good faith assist in the carrying out of all the provisions of this
Section  2 and in the  taking  of  all  such  action  as  may  be  necessary  or
appropriate in order to protect the conversion rights of the holders of Series A
Preferred against impairment.

         (f)  CERTIFICATE  AS  TO  ADJUSTMENTS.  Upon  the  occurrence  of  each
adjustment or readjustment  of the Conversion  Price pursuant to this Section 2,
the  Corporation  at its expense  shall  promptly  compute  such  adjustment  or
readjustment  in  accordance  with the terms hereof and furnish to each affected
holder of Series A Preferred,  a certificate  setting  forth such  adjustment or

                                       10

<PAGE>

readjustment  and  showing in detail the facts  upon  which such  adjustment  or
readjustment is based.  The Corporation  shall,  upon the written request at any
time of any  affected  holder of Series A Preferred  furnished  to such holder a
like certificate setting forth (i) such adjustments and readjustments,  (ii) the
Conversion Price at the time in effect, and (iii) the number of shares of Common
Stock and the  amount,  if any,  of other  property  which at the time  would be
received upon conversion of each share of Series A Preferred.

         (g)  NOTICES  OF  RECORD  DATE.  In  the  event  of any  taking  by the
Corporation  of a record  of the  holders  of any  class of  securities  for the
purpose of  determining  the  holders  thereof  who are  entitled to receive any
dividend (other than a cash dividend which is the same as cash dividends paid in
previous  quarters) or other  distribution,  the Corporation  shall mail to each
holder of Series A Preferred  at least ten (10) days prior to such record date a
notice  specifying  the date on which  any such  record  is to be taken  for the
purpose of such dividend or distribution.

         (h) COMMON  STOCK  RESERVED.  The  Corporation  shall  reserve and keep
available out of its authorized but unissued  Common Stock such number of shares
of  Common  Stock  as  shall  from  time to time be  sufficient  to  effect  the
conversion of all outstanding shares of Series A Preferred.

         (i)  CERTAIN  TAXES.  The  Corporation  shall pay any issue or transfer
taxes  payable  in  connection  with the  conversion  of any  shares of Series A
Preferred,  provided, however, that the Corporation shall not be required to pay
any tax which may be payable in  respect  of any  transfer  to a name other than
that of the holder of such Series A Preferred.

         (j)  CLOSING  OF  BOOKS.  The  corporation  shall at no time  close its
transfer books against the transfer of any Series A Preferred,  or of any shares
of Common Stock issued or issuable upon the conversion of any shares of Series A
Preferred in any manner which interferes with the timely  conversion or transfer
of such Series A Preferred.

         3.       VOTING RIGHTS.

         (a)  Except  as  otherwise  required  by law  or  this  Certificate  of
Incorporation  the holders of Series A Preferred and the holders of Common Stock
shall be entitled to notice of any stockholders' meeting and to vote as a single
class upon any matter submitted to the stockholders for a vote, on the following
basis:

                  (i)  Holders of Common  Stock shall have one vote per share of
         Common Stock held by them; and

                  (ii)  Holders of Series A Preferred  shall have that number of
         votes  per  share of Series A  Preferred  as is equal to the  number of
         shares of Common Stock into which each such share of Series A Preferred
         held by such holder could be converted on the date for determination of
         stockholders entitled to vote at the meeting.

         (b) ELECTION OF DIRECTORS. In addition to voting as a single class with
the holders of the Common Stock for the election of directors,  so long as there
shall be outstanding at least 100,000

                                       11

<PAGE>

shares of Series A Preferred (adjusted for any stock splits, dividend or similar
events affecting the Series A Preferred after the date of this  Certificate),  a
majority  of the holders of the Series A Preferred  voting  separately  from the
holders of Common  Stock  shall at all times be  entitled to elect one member of
the Board of Directors.

         4.       DIVIDEND RIGHTS.

         (a) From and after the Original Issue Date,  dividends  shall accrue on
each share of the Series A Preferred, whether or not funds are legally available
therefor and whether or not declared by the Board of Directors,  at the rate per
annum equal to $0.32 per share of Series A Preferred (the "Series A Dividends").
From time to time the Board of Directors of the  Corporation may declare and pay
dividends or distributions on shares of the Common Stock,  provided that no such
dividend  or other  distribution  may be  declared  or paid on the Common  Stock
(other than a dividend  payable  entirely  in shares of the Common  Stock of the
Corporation)  unless (1) all accrued Series A Dividends  shall have been paid in
full prior to the date of any such declaration,  payment or distribution and (2)
no shares  of  Series A  Preferred  remain  outstanding  on the date of any such
declaration, payment or distribution.

         (b) If,  with the  consent of the holders of at least a majority of the
outstanding Series A Preferred,  the Board of Directors of the Corporation shall
declare a dividend payable upon the then outstanding  shares of the Common Stock
(other than a dividend  payable  entirely  in shares of the Common  Stock of the
Corporation),  then the  Board of  Directors  shall  declare  at the same time a
dividend upon the then outstanding  shares of the Series A Preferred  payable at
the same time as the dividend  paid on the Common  Stock,  in an amount equal to
the  amount of  dividends  per share of Series A  Preferred  as would  have been
payable on the largest  number of whole  shares of Common Stock which each share
of Series A Preferred  held by each holder  thereof  would have received if such
Series A Preferred had been converted to Common Stock pursuant to the provisions
of Section 2 hereof as of the record  date for the  determination  of holders of
Common Stock entitled to receive such dividends.

         (c) In the  event  the  Board of  Directors  of the  Corporation  shall
declare a  dividend  payable  upon any class or series of  capital  stock of the
corporation other than Common Stock, the Board of Directors shall declare at the
same time a dividend  upon the then  outstanding  shares of Series A  Preferred,
payable  at the same  time as such  dividend  on such  other  class or series of
capital  stock in an  amount  equal to (i) in the  case of any  series  or class
convertible into Common Stock,  that dividend per share of Series A Preferred as
would equal the dividend payable on such other class or series  determined as if
all such shares of such class or series had been  converted  to Common Stock and
all shares of Series A  Preferred  have been  converted  to Common  Stock on the
record date for the  determination  of holders entitled to receive such dividend
or (ii) if such class or series of capital stock is not convertible  into Common
Stock,  at a rate per share of Series A Preferred  determined  by  dividing  the
amount of the dividend  payable on each share of such class or series of capital
stock by the original  issuance  price of such class or series of capital  stock
and multiplying such fraction by the Base Liquidation Price then in effect.

                                       12

<PAGE>

         (d)  Notwithstanding  the  foregoing  provisions of this Section 4: (i)
upon any conversion of the Series A Preferred  pursuant to Section 2 above,  all
accrued and unpaid  dividends  on such shares of Series A Preferred to and until
the date of such conversion shall be forfeited and shall not be due and payable;
and (ii) the payment of all or any portion of accrued  and unpaid  dividends  on
Series A Preferred may be waived by the affirmative  vote of holders of not less
than a majority  in  interest  of the Series A  Preferred,  voting as a separate
class.

         5.       COVENANTS.

         The   Corporation   shall  not,   without  first  having  obtained  the
affirmative  vote or written  consent of the holders of not less than two-thirds
in voting power of the outstanding shares of Series A Preferred:

                  (i)  Amend,  alter or  repeal  any  provision  of,  or add any
         provision  to,  the  Corporation's   Certificate  of  Incorporation  or
         By-Laws;

                  (ii) Alter or change the  preferences,  rights,  privileges or
         powers of, or the restrictions  provided for the benefit of, the Series
         A Preferred;

                  (iii) Increase the authorized number of shares of the Series A
         Preferred or any other series of capital stock of the Corporation;

                  (iv)  Reclassify  any  shares  of any  class or  series of the
         capital stock of the  Corporation  into shares having any preference or
         priority  superior  to or on a  parity  with  any  such  preference  or
         priority of the Series A Preferred;

                  (v)  Create,  authorize  or issue any other class or series of
         capital stock or any security  convertible into or evidencing the right
         to  purchase  shares of any class or  series  of  capital  stock of the
         Corporation  having any  preference  or  priority  superior  to or on a
         parity with any such  preference or priority of the Series A Preferred;
         or

                  (vi) Effect (A) any  Liquidation  Event of the  Corporation or
         any of its subsidiaries,  (B) any sale, lease, assignment,  transfer or
         other  conveyance  (other  than the  grant of a  mortgage  or  security
         interest in connection with  indebtedness for borrowed money) of all or
         substantially   all  the  assets  of  the   Corporation,   or  (C)  any
         consolidation  or  merger  of the  Corporation  with or into any  other
         entity.

         6. NO REISSUANCE OF SERIES A PREFERRED.  No share or shares of Series A
Preferred  acquired  by the  Corporation  by  reason  of  redemption,  purchase,
conversion  or  otherwise  shall  be  reissued,  and all  such  shares  shall be
canceled,  retired and eliminated from the shares which the corporation shall be
authorized to issue.

         7.       REDEMPTION.

                  (a) At the  written  request  in the  form  of  notice  to the
Corporation  (the

                                       13

<PAGE>

"Redemption  Notice")  of the holder or  holders  of at least a majority  of the
shares of Series A Preferred  then  outstanding  made at any time after November
___, 2000 , the Corporation shall redeem on the Redemption Date (as such term is
defined  below),  at a  redemption  price per share  equal to the greater of the
original  Conversion  Price,  being $2.00 per share, or the Conversion  Price as
adjusted  at the  Redemption  Date for such Series A  Preferred,  plus an amount
equal to any accrued or declared but unpaid  dividends  thereon (the "Redemption
Price"), all of the outstanding Series A Preferred.  The Redemption Price may be
payable,  at the  Corporation's  option, in cash or a number of shares of Common
Stock, as determined pursuant to Section 7(d) below.

         (b) On and after the  Redemption  Date,  all rights of all holders with
respect to those shares of Series A Preferred  being redeemed by the Corporation
pursuant to Section 7(a),  except the right to receive the Redemption  Price per
share of Series A Preferred as hereinafter provided,  shall cease and terminate,
and such  shares  of  Series  A  Preferred  shall  no  longer  be  deemed  to be
outstanding,  whether or not the certificates representing such shares have been
received by the Corporation;  PROVIDED,  HOWEVER, that, notwithstanding anything
to the contrary set forth herein, if the Corporation  defaults in the payment of
the  Redemption  Price in respect of any share of Series A  Preferred,  then the
rights  of the  holder  or  holders  with  respect  to such  shares  of Series A
Preferred shall continue until the Corporation cures such default.

         (c) On the twentieth  (20th) business day following the date upon which
the Corporation  received the Redemption  Notice (the "Redemption  Date") from a
majority of holders of Series A Preferred the Corporation  shall pay each holder
of Series A Preferred the applicable  Redemption  Price pursuant to the terms of
Section 7(a),  provided that the  Corporation or its transfer agent has received
the certificate(s) representing the shares of Series A Preferred to be redeemed.

         (d) The Redemption Price shall be payable, at the Corporation's option,
in cash or in shares of Common Stock, or any combination thereof;  PROVIDED that
if the  Corporation  elects to pay the  aggregate  Redemption  Price in cash and
shares of Common  Stock,  the cash portion  shall be  allocated  pro rata to all
holders of Series A Preferred.  In the event that the Corporation  elects to pay
all or any  portion  of the  Redemption  Price in shares of Common  Stock,  such
shares of Common Stock shall be valued at the lowest of (i) the Market Price Per
Share (as defined  below) of the Common Stock on November ____,  1998,  (ii) the
Market  Price Per Share of the Common  Stock on the  original  issue date of the
Series A Preferred  and (iii) the Market  Price Per Share of the Common Stock on
the date which is two business days prior to the  Redemption  Date.  The "Market
Price Per Share" of the Common  Stock on any date shall mean the  average of the
daily closing  prices per share of Common Stock for the 20  consecutive  Trading
Days immediately prior to such date; PROVIDED that in the event that the current
market price per share of Common Stock is determined  during a period  following
the  announcement  by the  Corporation of (A) a dividend or  distribution on the
Common Stock  payable in shares of Common Stock or securities  convertible  into
shares of Common Stock or (B) any subdivision,  combination or  reclassification
of the Common  Stock and prior to the  expiration  of 20 Trading  Days after the
ex-dividend date for such dividend or distribution,  or the record date for such
subdivision,  combination or reclassification,  then, and in each such 

                                       14

<PAGE>

case,  the Current  Market  Price Per Share shall be  appropriately  adjusted to
reflect    ex-dividend    trading   or   such   subdivision,    combination   or
reclassification.  The  closing  price for each day  shall be (i) if the  Common
Stock is then quoted on the Nasdaq National  Market,  the Nasdaq SmallCap Market
or another primary national  securities  exchange,  the closing bid price of the
Common  Stock as reported by the Nasdaq  National  Market,  the Nasdaq  SmallCap
Market or such primary national  securities  exchange (as the case may be), (ii)
if the Common Stock is not then traded on the Nasdaq National Market, the Nasdaq
SmallCap Market nor on a national securities exchange,  the closing bid price in
the  over-the-counter   market  as  reported  by  the  National  Association  of
Securities Dealers' Automated Quotation System or, if not so reported, the price
as  reported  by the  National  Quotation  Bureau,  Inc.,  or  any  organization
performing a similar function or (iii) if no such prices are then furnished, the
fair market value of a share of Common Stock as mutually determined by the Board
of Directors of the Corporation and holders of at least a majority of the Series
A Preferred.

         8. RESIDUAL  RIGHTS.  All rights accruing to the outstanding  shares of
the  Corporation  not  expressly  provided  for in the  terms  of the  Series  A
Preferred shall be vested in the Common Stock.

         The  holders of the Series A Preferred  shall vote as a separate  class
with respect to any matter or proposed action as to which applicable law or this
Certificate  of  Incorporation  require  the vote,  consent,  or approval of the
holders of the Series A Preferred.

         IN WITNESS  WHEREOF,  the  Corporation  has caused this  Certificate of
Designation  to be  signed  by its duly  authorized  officer  this  _____ day of
November, 1998.

                                    SUNPHARM CORPORATION



                                    By:      ______________________________
                                    Name:
                                    Title:




                       PREFERRED STOCK PURCHASE AGREEMENT




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



                          SECURITIES PURCHASE AGREEMENT


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






                              SUNPHARM CORPORATION


        300,000 shares of Series A Redeemable Convertible Preferred Stock

                                       and

                         853,565 shares of Common Stock

                             issued in exchange for

                                 an aggregate of

            $1,200,000 and 346,596 Warrants to purchase Common Stock








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


                          Dated as of November 13, 1998

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

<PAGE>

                          SECURITIES PURCHASE AGREEMENT



         THIS SECURITIES PURCHASE AGREEMENT (this "Agreement"), dated as of this
13th day of November, 1998, by and among SunPharm Corporation, a Delaware
corporation (the "Company"), and the Persons listed on SCHEDULE A attached
hereto (individually, a "Purchaser" and, collectively, the "Purchasers").

         WHEREAS, the Purchasers entered into a Unit Purchase Agreement with the
Company dated March 28, 1997 (the "Unit Purchase Agreement"), pursuant to which
the Purchasers purchased units, each unit consisting of one share of the
Company's Common Stock (as defined below) and one Warrant (as defined below) to
purchase one share of the Company's Common Stock;

         WHEREAS, the Company desires to issue and sell to the Purchasers, and
the Purchasers desire to acquire on the terms and subject to the conditions set
forth herein, an aggregate of 300,000 shares of Series A Redeemable Convertible
Preferred Stock, par value $.001 per share (the "Series A Preferred Stock"), and
an aggregate of 853,565 shares of Common Stock;

         NOW, therefore, in consideration of the premises and the mutual
covenants contained in this Agreement, the parties agree as follows:


                                    ARTICLE I

                                   DEFINITIONS


         SECTION 1.01 DEFINITIONS. As used in this Agreement, references to
either gender shall include the other gender, and the following terms shall have
the following meanings (such meanings to be equally applicable to both the
singular and plural forms of the terms defined):


                  "Affiliate" shall have the meaning given to such term in Rule
         12b-2 of the Rules and Regulations under the Exchange Act.


                  "Agreement" means this Securities Purchase Agreement, as
         amended, modified or supplemented from time to time.

                  "Business Day" means any day on which commercial banks are not
         authorized or required by law to close in New York, New York.

<PAGE>

                  "Commission" means the United States Securities and Exchange
         Commission, or any other agency successor thereto.

                  "Common Shares" means shares of Common Stock.

                  "Conversion Shares" means those shares of Common Stock
         issuable upon the conversion of the Series A Preferred Stock.


                  "Common Stock" shall mean the Common Stock, par value $.0001
         per share, of the Company, and shall include any stock into which such
         Common Stock shall have been changed or any stock resulting from any
         reclassification of such Common Stock and all other stock of any class
         or classes (however designated) of the Company the holders of which
         have the right, without limitation as to amount, either to all or to a
         share of the balance of current dividends and liquidating dividends
         after the payment of dividends and distributions on any shares entitled
         to preference.

                  "Company" means and shall include SunPharm Corporation, a
         Delaware corporation, and its successors and permitted assigns.

                  "Exchange Act" means the Securities Exchange Act of 1934 or
         any successor Federal statute, and the rules and regulations of the
         Commission thereunder, all as the same shall be in effect at the time.

                  "Guarantee" shall mean any obligation, contingent or
         otherwise, of any Person guaranteeing or having the economic effect of
         guaranteeing any Indebtedness of any other Person in any manner,
         whether directly or indirectly, and including, without limitation, any
         obligation of such Person, direct or indirect, (i) to purchase or pay
         (or advance or supply funds for the purchase or payment of) such
         Indebtedness or to purchase (or to advance or supply funds for the
         purchase of) any security for the payment of such Indebtedness, (ii) to
         purchase property, securities or services for the purpose of assuring
         the owner of such Indebtedness of the payment of such Indebtedness, or
         (iii) to maintain working capital, equity capital or other financial
         statement condition of the primary obligor so as to enable the primary
         obligor to pay such Indebtedness; provided, however, that the term
         "Guarantee" shall not include endorsements for collection or deposit,
         in either case, in the ordinary course of business.

                  "Indebtedness" shall mean, with respect to any Person, (i) all
         obligations of such Person for borrowed money, or with respect to
         deposits or advances of any kind (other than deposits, advances or
         excess payments accepted in connection with the sale by such Person of
         products or services in the ordinary course of business), (ii) all
         obligations of such Person evidenced by bonds, debentures, notes or
         similar instruments, (iii) all

                                       2

<PAGE>

         obligations of such Person upon which interest charges are customarily
         paid (other than obligations accepted in connection with the purchase
         by such Person of products or services in the ordinary course of
         business), (iv) all obligations of such Person under conditional sale
         or other title retention agreements relating to property purchased by
         such Person, (v) all obligations of such Person issued or assumed as
         the deferred purchase price of property or services (other than
         accounts payable to suppliers incurred in the ordinary course of
         business and paid when due), (vi) all Indebtedness of others secured by
         (or for which the holder of such Indebtedness has an existing right,
         contingent or otherwise, to be secured by) any Lien or security
         interest on property owned or acquired by such Person whether or not
         the obligations secured thereby have been assumed, (vii) all
         obligations of such Person under leases required to be accounted for as
         capital leases under generally accepted accounting principles, and
         (viii) all Guarantees of such Person.

                  "Lien" shall mean: (i) any interest in property (whether real,
         personal or mixed and whether tangible or intangible) which secures an
         obligation owed to, or a claim by, a Person other than the owner of
         such property, whether such interest is based on the common law,
         statute or contract, including, without limitation, any such interest
         arising from a lease, mortgage, charge, pledge, security agreement,
         conditional sale, trust receipt or deposit in trust, or arising from a
         consignment of bailment given for security purposes (other than a trust
         receipt or deposit given in the ordinary course of business which does
         not secure any obligation for borrowed money), (ii) any encumbrance
         upon such property which does not secure such an obligation, and (iii)
         any exception to or defect in the title to or ownership interest in
         such property, including, without limitation, reservations, rights of
         entry, possibilities of reverter, encroachments, easements, rights of
         way, restrictive covenants, licenses and PROFITS A PRENDRE. For
         purposes of this Agreement, any Person shall be deemed to be the owner
         of the leasehold or other interest in any property which it has
         acquired or holds subject to a lease and the owner of any property
         which it has acquired or holds subject to a conditional sale agreement
         or other similar arrangement pursuant to which title to the property
         has been retained by or vested in some other Person for security
         purposes.

                  "Person" means an individual, corporation, partnership,
         association, joint venture, trust, or unincorporated organization, or a
         government or any agency or political subdivision thereof.

                  "Preferred Shares" means shares of Series A Preferred Stock.

                  "Purchaser" has the meaning specified in the introduction to
         this Agreement, and its successors and permitted assigns.

                                       3

<PAGE>

                  "Recapitalization Event" means any stock dividend, stock
         split, combination, reorganization, recapitalization, reclassification,
         consolidation, merger or similar event involving a change in the
         Company's corporate structure.

                  "Registrable Shares" means (i) the Shares, (ii) the Conversion
         Shares, (iii) any shares of Common Stock issued to the Purchasers upon
         a redemption of the Series A Preferred Stock and (iv) any other shares
         of Common Stock issued to the Purchasers in respect of the foregoing
         Shares because of any Recapitalization Event.

                  "Securities Act" means the Securities Act of 1933 or any
         successor Federal statute, and the rules and regulations of the
         Commission thereunder, all as the same shall be in effect at the time.

                  "Shares" or "Securities" means the Common Shares and the
         Preferred Shares, collectively.

                  "Subsidiary" or "Subsidiaries" shall mean any corporation,
         partnership, trust or other entity of which the Company and/or any of
         its other Subsidiaries directly or indirectly owns at the time a
         majority of the outstanding shares of any class of equity security of
         such corporation, partnership, trust or other entity.

                  "Warrants" shall mean the stock purchase warrants issued
         pursuant to the Warrant Agreement dated as of March 28, 1997 entitling
         the record holders thereof to purchase from the Company shares of
         Common Stock, subject to adjustment as provided in the Warrant
         Agreement; individually, a "Warrant".

                  "Warrant Agreement" shall mean the Warrant Agreement dated as
         of March 28, 1997 by and between the Company and the Purchasers
         identified therein, pursuant to which the Warrants have been issued and
         have been exercisable at the Exercise Price (as defined therein) at any
         time after the Closing Date and before 5:00 P.M., New York time, on the
         Expiration Date (as defined therein), as amended, modified or
         supplemented from time to time.


                                   ARTICLE II

                       PURCHASE AND SALE OF THE SECURITIES

         SECTION 2.01 AUTHORIZATION OF THE SHARES. The Company has authorized
the issuance and sale of 300,000 shares of Series A Preferred Stock having the
rights, restrictions and privileges and preferences set forth in the Certificate
of Designation attached hereto as Exhibit A (the "Series A Certificate of
Designation") and an aggregate of 853,565 shares of Common Stock.

                                       4

<PAGE>

         SECTION 2.02 CLOSING. Subject to the terms and conditions set forth in
this Agreement, and in reliance on the representations and warranties set forth
in this Agreement, the Company agrees to issue and sell to the Purchasers at the
Closing and the Purchasers, severally but not jointly, agree to purchase from
the Company, (i) that number of Preferred Shares set forth opposite their
respective names on SCHEDULE A under the caption "Number of Preferred Shares
Purchased at Closing" and (ii) that number of Common Shares set forth opposite
their respective names on SCHEDULE A under the caption "Number of Common Shares
Purchased at Closing" at a purchase price equal to (A) Four Dollars and Zero
Cents ($4.00) per share of Series A Preferred Stock and (B) the surrender by the
Purchasers of that number of Warrants set forth opposite their respective names
on SCHEDULE A under the caption "Number of Warrants Surrendered at Closing." The
closing of the purchase and sale of the Securities (the "Closing") shall take
place at the offices of Mintz, Levin, Cohn, Ferris, Glovsky and Popeo, P.C. at
5:00 p.m. on November 13, 1998 (the "Closing Date") or at such time and date
thereafter as the Purchasers and the Company may agree. At the Closing, the
Company will, subject to Section 2.03, deliver to each Purchaser certificates
for the number of Preferred Shares and Common Shares being purchased by such
Purchaser registered in such Purchaser's name (or its nominee), against (i)
delivery of a check or checks payable to the order of the Company, or a transfer
of funds to the account of the Company by wire transfer, representing a portion
of the purchase price paid by such Purchaser and (ii) surrender by such
Purchaser of the number of Warrants set forth opposite such Purchaser's name on
SCHEDULE A under the caption "Number of Warrants Surrendered at Closing,"
representing the remaining portion of the purchase price. At the Closing or as
soon as practicable after the Closing, each Purchaser shall surrender such
Purchaser's certificates representing such Purchaser's Warrants to the Company
(acting, until such time as all certificates representing such Warrants shall
have been exchanged in accordance herewith, as Exchange Agent hereunder (the
"Exchange Agent")) in exchange for certificates representing such Purchaser's
Common Shares; PROVIDED that, notwithstanding the foregoing, on the Closing
Date, by virtue of the Closing and without any further action on the part of the
Purchasers, the Company or any other Person, (i) the Preferred Shares and the
Common Shares being purchased by the Purchasers shall be issued by the Company
and shall be deemed issued and outstanding capital stock of the Company for all
intents and purposes and (ii) the Warrants being surrendered by the Purchasers
shall be deemed to be surrendered and canceled by the Purchasers, whether or not
the certificates representing such Warrants have been physically surrendered or
delivered to the Company or its agent.


                                   ARTICLE III

                     COMPANY REPRESENTATIONS AND WARRANTIES

         In order to induce the Purchasers to enter into this Agreement and to
consummate the transactions contemplated hereby, the Company hereby represents
and warrants to the Purchasers as follows:

                                       5

<PAGE>

         SECTION 3.01. ORGANIZATION AND GOOD STANDING. The Company is a
corporation duly organized, validly existing and in good standing under the laws
of the State of Delaware. The Company has the requisite corporate power and
authority to own and operate its properties and assets and to carry on its
business as currently conducted. The Company is qualified to do business in the
State of Florida. The Company is not qualified to do business as a foreign
corporation in any other jurisdiction and such qualification is not now
required, except to the extent that the failure to so qualify would not have a
material adverse effect on the Company's business as currently conducted.

         SECTION 3.02. CORPORATE POWER AND AUTHORIZATION. The Company has the
corporate power and authority to execute and deliver this Agreement, to issue
and sell the Shares hereunder and to issue and deliver the Conversion Shares
upon conversion of the Preferred Shares, and to perform its obligations under
the terms of this Agreement. All corporate action on the part of the Company,
its directors and stockholders necessary for the authorization, execution,
delivery and performance by the Company of this Agreement and the authorization,
sale, issuance and delivery of the Shares and the Conversion Shares has been
taken or will be taken prior to Closing. This Agreement constitutes the valid
and binding obligation of the Company, enforceable in accordance with its terms,
except as the enforceability thereof may be limited by bankruptcy, insolvency or
other laws relating to or affecting creditors' rights generally and by general
equitable principles. The Shares have been and the Conversion Shares will be
duly authorized and, when issued in compliance with the provisions of this
Agreement, will be validly issued, fully paid and nonassessable; and the Shares
and the Conversion Shares when issued and delivered in accordance with the terms
of this Agreement and (in the case of the Conversion Shares) the Series A
Certificate of Designation, will be free of any Liens or encumbrances created by
the Company; PROVIDED, HOWEVER, that the Shares and the Conversion Shares may be
subject to restrictions on transfer under state or federal securities laws as
set forth herein.

         SECTION 3.03. CAPITALIZATION. The authorized capital stock of the
Company consists of 27,500,000 shares, divided into 25,000,000 shares of Common
Stock, par value $0.0001 per share, of which 5,767,830 shares are issued and
outstanding, and 2,500,000 shares of undesignated blank check preferred stock,
par value $0.001 per share ("Preferred Stock"), of which 300,000 shares shall be
designated as Series A Preferred Stock in accordance with the Series A
Certificate of Designation prior to the Closing. All of the outstanding shares
of Common Stock have been duly authorized and validly issued and are fully paid
and nonassessable. The Company has reserved (i) up to 300,000 shares of Common
Stock for issuance upon exercise or conversion of the Preferred Shares, (ii) up
to 3,527,272 shares of Common Stock for issuance upon exercise of warrants
issued by the Company (including any Warrants being surrendered pursuant hereto)
and (iii) up to 1,137,754 shares of Common Stock for issuance upon the exercise
of options to purchase Common Stock issued by the Company. SCHEDULE 3.03 sets
forth the outstanding capitalization of the Company as of the

                                       6

<PAGE>

date hereof, including the material terms (expiration date, exercise price,
etc.) of such outstanding options and warrants and, except for such outstanding
options and warrants, there are no other options, warrants or other rights
outstanding to purchase or acquire, or any securities convertible into, nor has
the Company agreed to issue or reissue, other than pursuant to this Agreement,
any of the Company's authorized and unissued capital stock. There are no
agreements or understandings that affect or relate to the voting or giving of
written consent with respect to any of the Company's outstanding securities.
There are no preemptive rights with respect to the issuance or sale of the
Company's capital stock and there are no restrictions on the transfer of the
Company's capital stock other than those arising from federal and state
securities laws.

         SECTION 3.04. SEC REPORTS; FINANCIAL STATEMENTS. The Company has filed
with the Commission all forms, reports and documents required to be filed by it
pursuant to the Exchange Act, all of which, when filed, complied in all material
respects with all applicable requirements of the Exchange Act. The Purchasers
have been provided true and correct copies (not including exhibits) of the
Company's (i) Annual Report on Form 10-KSB for the fiscal year ended December
31, 1997, as filed with the Commission, (ii) Quarterly Reports on Form 10-QSB
for the quarters ended March 31, 1998 and June 30, 1998, in each case as filed
with the Commission, and (iii) proxy statements relating to all meetings of its
stockholders (whether annual or special) since December 31, 1997 and prior to
the date hereof (collectively, the "Company's SEC Reports"). As of their
respective dates, the Company's SEC Reports (not including any exhibits and
schedules thereto and documents incorporated by reference therein) did not
contain any untrue statement of a material fact or omit to state any material
fact required to be stated therein or necessary to make the statements therein,
in light of the circumstances under which they were made, not misleading. The
audited financial statements and unaudited interim financial statements of the
Company included in the Company's SEC Reports or incorporated by reference
therein were prepared in accordance with generally accepted accounting
principles ("GAAP") (subject, in the case of such unaudited financial
statements, to the absence of complete footnotes) applied on a consistent basis
(except as indicated therein or in the notes thereto) and fairly present in all
material respects the financial position of the Company at the dates thereof and
the results of its operations and cash flows for the periods then ended (subject
in the case of the unaudited interim financial statements, to normal year-end
audit adjustments).

         SECTION 3.05. ABSENCE OF CERTAIN DEVELOPMENTS. Since December 31, 1998,
there has been no change in the assets, liabilities, condition (financial or
otherwise), operating results, business or prospects of the Company from that
reflected in the Company's SEC Reports, except changes in the ordinary course of
business that have not been, individually or in the aggregate, materially
adverse to the assets, properties, condition (financial or otherwise), operating
results, business or prospects of the Company. Since December 31, 1998, the
Company has not (i) directly or indirectly declared or paid any dividend or
ordered or made any other distribution on account of any shares of any class of
the capital stock of the Company, (ii) directly or indirectly redeemed,
purchased or otherwise acquired any such 

                                       7

<PAGE>

shares or agreed to do so or set aside any sum or property for any such purpose,
(iii) made any capital expenditures exceeding $100,000, or (iv) incurred any
indebtedness exceeding $100,000.

         SECTION 3.06. COMPLIANCE WITH OTHER INSTRUMENTS. The Company is not in
violation or default of any provision of its Certificate of Incorporation or
By-Laws or of any material mortgage, indenture, contract, agreement, instrument,
judgment or decree to which the Company is a party or by which it is bound. The
execution, delivery and performance by the Company of this Agreement and the
consummation of the transactions contemplated hereby will not result in any
violation of or conflict with the Company's Certificate of Incorporation or
By-Laws, and will not result in any violation of or conflict with, or constitute
a default under, any material mortgage, indenture, contract, agreement,
instrument, judgment or decree to which the Company is a party or by which it is
bound or in the creation of any material mortgage, pledge, Lien, encumbrance or
charge upon any of the properties or assets of the Company.

         SECTION 3.07. REGISTRATION RIGHTS. Except as set forth in SCHEDULE 3.07
hereto, and the provisions of Article VII of this Agreement, the Company is not
under any contractual obligation to register under the Securities Act any of its
currently outstanding securities or any of its securities which may hereafter be
issued.

          SECTION 3.08. GOVERNMENTAL CONSENT. No consent, approval or
authorization of or registration, qualification, designation, declaration or
filing with any governmental authority on the part of the Company is required in
connection with the valid execution, delivery and performance of this Agreement
or the offer, sale or issuance of the Shares and the Conversion Shares or the
consummation of any other transaction contemplated hereby, except for filings
that may be required to comply with applicable federal and state securities
laws.

          SECTION 3.09. OFFERING. Subject to the accuracy of the representations
of the Purchasers in Article IV, the offer, sale and issuance of the Shares as
contemplated by this Agreement will constitute transactions exempt from the
registration requirements of Section 5 of the Securities Act.

          SECTION 3.10. SUBSIDIARIES. The Company has no subsidiaries and does
not otherwise own or control, directly or indirectly, any equity interest in any
corporation, association, partnership or business entity, nor has the Company
made any commitment or subscribed for the purchase of any such equity interest.

          SECTION 3.11. ABSENCE OF UNDISCLOSED LIABILITIES. The Company does not
have any liability or obligation, absolute or contingent, that is not reflected
in the financial statements included in the Company's SEC Reports, other than
obligations and liabilities which taken individually or in the aggregate would
not have a material adverse effect on the Company's assets, liabilities,
condition (financial or otherwise), operating results, business or prospects.

                                       8

<PAGE>

          SECTION 3.12. TAXES. The Company has filed all tax returns and reports
required by law to be filed, and has paid all taxes, assessments and other
governmental charges that are due and payable, except for those matters
reasonably being contested by the Company and those matters which, individually
and in the aggregate, would not have a material adverse effect on the Company's
assets, liabilities, condition (financial or otherwise), operating results,
business or prospects. The charges, accruals and reserves on the books of the
Company in respect of taxes are considered adequate by the Company, and the
Company knows of no assessment for additional taxes or any basis therefor.

         SECTION 3.13. TITLE TO PROPERTIES: LIENS AND ENCUMBRANCES. The Company
has good title to all properties and assets which it owns or purports to own,
both real and personal, tangible and intangible, reflected on the balance sheet
included in the financial statements included in the Company's SEC Reports or
acquired after the date thereof (except inventory or other personal property
disposed of in the ordinary course of business subsequent to the date thereof),
and such properties and assets are not subject to any mortgage, pledge, Lien,
security interest, encumbrance or charge other than (i) Liens for current taxes
not yet due and payable, (ii) Liens and encumbrances that do not materially
detract from the value of the property subject thereto or materially impair the
operations of the Company, or (iii) Liens securing obligations reflected in such
financial statements. With respect to properties or assets it leases, the
Company is in compliance with such leases (except for such defaults or breaches
that would not have a material adverse affect on the Company) and holds valid
leasehold interests free of any Liens, claims or encumbrances except for those
described in subsections (i) through (iii) hereof.

         SECTION 3.14. LITIGATION. ETC. There are no actions, suits, proceedings
or investigations (i) pending or, to the Company's knowledge, threatened against
the Company or which otherwise involve the Company's business or operations, or
(ii) to the Company's knowledge, pending or threatened against any of its
officers, directors or principal stockholders in their capacities as officers,
directors or stockholders.

          SECTION 3.15. EMPLOYEES. To the Company's knowledge, no employee of
the Company is in violation of any term of any employment contract or any other
contract or agreement between such employee and the Company. None of the
employees of the Company is represented by any labor union, and there is no
strike or other labor dispute pending or, to the knowledge of the Company,
threatened, with respect to the Company.

                                       9

<PAGE>

         SECTION 3.16. COMPLIANCE WITH LAW. The Company is conducting its
business and operations in material compliance with all governmental rules and
regulations applicable thereto, including without limitation those relating to
occupational safety, environmental, health and employment practices, and is not
in violation or default in any material respect under any statute, law,
ordinance, rule, regulation, judgment, order, decree, concession, grant,
franchise, license or other governmental authorization or approval applicable to
it or any of its properties.

         SECTION 3.17. PERMITS. The Company has all permits, licenses, orders
and approvals of any federal, state, local or foreign governmental or regulatory
body (collectively, the "Permits") that are material to or necessary in the
conduct of its business as now conducted; all such Permits are in full force and
effect; no violations have been recorded in respect of any such Permits; and no
proceeding is pending or, to the knowledge of the Company, threatened to revoke
or limit any such Permits.

          SECTION 3.18. BROKERS OR FINDERS. The Company has not retained any
investment banker, broker or finder in connection with the transactions
contemplated by this Agreement, and there are no brokerage commissions, finder's
fees or similar items of compensation payable in connection therewith based on
any arrangement or agreement made by or on behalf of the Company.

          SECTION 3.19. DISCLOSURE. This Agreement, including the schedules
hereto, was prepared in good faith by the Company and does not contain any
untrue statement of a material fact or omit a material fact necessary to make
the statements therein not misleading.

         SECTION 3.20. INTELLECTUAL PROPERTY. The Company owns or possesses the
requisite licenses or rights to all trademarks, service marks, service names,
trade names, patents and patent applications, copyrights and other rights
(collectively the "Intangibles") described as owned or licensed by the Company
in the SEC Reports. There is no claim, action or proceeding by any person
pending or, to the Company's knowledge, threatened which pertains to or
challenges the validity, enforceability or exclusive right of the Company with
respect to any Intangibles used in the conduct of the Company's business except
as described in the SEC Reports. To the Company's knowledge, the Company's
current products, services and processes do not infringe on any Intangibles held
by any third party. Except as set forth in the agreements disclosed in the SEC
Reports, the Company is not under any obligation to pay royalties or fees of any
kind whatsoever to any third party with respect to technology it has developed,
uses, employs or intends to use or employ.

         SECTION 3.21. MATERIAL CONTRACTS. All contracts, agreements (including
license agreements and any other agreements relative to the Company's
technology), leases or other commitments, written or oral, absolute or
contingent, to which the Company is a party are filed or incorporated by
reference as exhibits to the Company's SEC Reports, other than (i) contracts
entered into in the ordinary course of business, requiring the expenditure by
the

                                       10

<PAGE>

Company or the payment to the Company of no more than $100,000 and (ii)
contracts terminable by the Company on no more than 30 days' notice without
material cost or liability to the Company. Each such material contract
(including, without limitation, contracts between the Company and each of (i)
the University of Florida Research Foundation, (ii) Warner-Lambert Co. and (iii)
Raymond Bergeron) is valid and in full force and effect, and no event of default
(or event or circumstance which, with the lapse of time or giving of notice, or
both, would constitute an event of default) exists under any such material
contract. The Company is not in breach of any of the material provisions of any
such material contract and, to the Company's knowledge, no other party to any
such material contract is in breach of any of the material provisions thereof.

         SECTION 3.22. INTERESTED PARTY TRANSACTIONS. The Company is not a
guarantor or indemnitor of any indebtedness of any other person, firm or
corporation. Except as set forth in SCHEDULE 3.22 hereto, no stockholder,
executive officer or director of the Company, nor any immediate family member of
such person, is a party to any transaction with the Company which is or would be
required to disclose in the Company's SEC Reports pursuant to Item 404 of
Regulation S-K of the rules and regulations under the Securities Act and the
Exchange Act.

         SECTION 3.23. BOOKS AND RECORDS. The minute books of the Company
reflect, in all material respects, all meetings and other corporate actions of
the stockholders and Board of Directors (and any committees thereof) of the
Company.

         SECTION 3.24. ERISA. Each employee benefit plan (within the meaning of
Section 3(3) the Employment Retirement Income Security Act of 1974, as amended
("ERISA")) which is subject to ERISA and/or the Internal Revenue Code of 1986,
as amended (the "Code") conforms to, and its operation and administration are in
compliance with, all applicable requirements of ERISA and/or the Code, as
applicable. There are no actions, suits or claims pending (other than routine
claims for benefits) or threatened against any employee plan or against the
assets of any employee plan. Each "Employee Welfare Benefit Plan" (as defined in
Section 3(1) of ERISA) covering any present or former employee of the Company
subject to the requirements of COBRA has complied with all requirements for
continuation coverage under group health benefit plans under COBRA and there are
no claims against the Company for a failure or alleged failure to comply with
the COBRA continuation requirements. The Company does not and has not ever
contributed to a "multiemployer plan" (as defined in Section 3(37) of ERISA) and
no amount is due or owing on account of any withdrawal therefrom.
Notwithstanding anything else set forth herein, the Company has incurred no
liability with respect to any such plan under ERISA (including, without
limitation Title I or Title IV of ERISA, other than liability for premiums due
to the Pension Benefit Guaranty Corporation), the Code or other applicable law,
which has not been satisfied in full, and no event has occurred, and there
exists no condition or set of circumstances which could result in the imposition
of any liability under ERISA (including, without limitation Title I or Title IV
of ERISA), the Code or other applicable law with respect to any such plan.

                                       11

<PAGE>

         SECTION. 3.25 ENVIRONMENTAL LAWS.

                  (a) The Company is in compliance with all limitations,
restrictions, conditions, standards, prohibitions, requirements, obligations,
schedules and timetables contained in any Applicable Environmental Laws, or in
any plan, order, decree, judgment, notice or demand letter issued, entered,
promulgated or approved thereunder. For purposes of this Agreement, the term
"Applicable Environmental Laws" shall mean Comprehensive Environmental Response,
Compensation and Liability Act of 1980,42 U.S.C. 9601 ET. SEQ. ("CERCLA");
Resource Conservation and Recovery Act of 1976,42 U.S.C. 6901 ET. SEQ. ("RCRA");
Federal Water Pollution Control Act, 33 U.S.C. 1251 ET. SEQ.; and Clean Air Act,
42 U.S.C. 7401 ET. SEQ. and any similar provisions of state or local law in any
jurisdictions where the properties of the Company are located, and the
regulations thereunder, and any other local, state and or federal laws or
regulations, whether currently in existence or hereafter enacted that govern.

                  (b) The Company is not aware of, nor has the Company received
notice of, any past present or future events, conditions, circumstances,
activities, practices, incidents, actions or plans which may interfere with or
prevent continued compliance, or which may give rise to any common law or legal
liability, or otherwise form the basis of any claim, action, suit, proceeding,
hearing or investigation, based on or related to the manufacture, processing,
distribution, use, treatment, storage, disposal, transport or handling, or the
emission, discharge, release or threatened release into the environment, of any
pollutant, contaminant, or hazardous or toxic material or waste.

                  (c) No Hazardous Material has been incorporated in, used on,
stored on or under, released from, treated on, transported to or from, or
disposed of on or from any property owned or leased by the Company such that,
under Applicable Environmental Laws (i) any such Hazardous Material would be
required to be removed, cleaned-up or remediated before the property could be
altered, renovated, demolished or transferred, or (ii) the owner or lessee of
the property could be subjected to liability for the removal, clean-up or
remediation of such Hazardous Material; and the Company has not received any
notification from any Governmental Bodies or other third parties relating to
Hazardous Material on or affecting any property owned or leased by the Company
or relating to any potential or known liability under Applicable Environmental
Laws arising from the ownership or leasing of any property. For purposes of this
Agreement, "Hazardous Material" shall mean any substance which as of the date of
this Agreement shall be identified as "hazardous" or "toxic" or otherwise
regulated under CERCLA or RCRA or which has been or shall be determined at any
tine by any agency or court to be a hazardous or toxic substance under
Applicable Environmental Law. The term "Hazardous Material" shall also include,
without limitation, raw materials, building components, the products of any
manufacturing or other activities on the properties, wastes, petroleum, and
source, special nuclear or by-product material as defined by the Atomic 

                                       12

<PAGE>

Energy Act of 1954,42 U.S.C. ss.ss. 3011 ET. seq., as amended.

                                   ARTICLE IV

                    PURCHASER REPRESENTATIONS AND WARRANTIES

         SECTION 4.01 REPRESENTATIONS AND WARRANTIES OF THE PURCHASERS. Each
Purchaser represents and warrants to the Company as follows:

         (a)      INVESTMENT INTENT. Such Purchaser is acquiring the Shares as
indicated on Schedule A for its own account for the purpose of investment and
not with a view to, or for sale in connection with, the distribution thereof,
and that it has no present intention of distributing or selling such Shares.

         (b)      TRANSFER RESTRICTIONS. Such Purchaser understands that the
Shares and the Conversion Shares have not been registered under the Securities
Act, or the securities laws of any state or other jurisdiction, and hereby
agrees not to make any sale, transfer or other disposition of the same in the
absence of (i) an effective registration statement covering such securities
under the Securities Act and any securities laws of any applicable state or
other jurisdiction or (ii) an applicable exemption from registration under the
Securities Act (including, without limitation, pursuant to Rule 144 under the
Securities Act) and other applicable securities laws.

         (c)      OPPORTUNITY TO INVESTIGATE. Such Purchaser (i) has had the
opportunity to ask questions concerning the Company (including, without
limitation, the Company's prior financings) and all such questions posed have
been answered to such Purchaser's satisfaction; (ii) has been given the
opportunity to obtain any additional information it deems necessary to verify
the accuracy of any information obtained concerning the Company; and (iii) has
such knowledge and experience in financial and business matters that it is able
to evaluate the merits and risks of purchasing the Shares and to make an
informed investment decision relating thereto.

         (d)      ACCREDITED INVESTOR. Such Purchaser is an "accredited
investor" as such term is defined in Regulation D under the Securities Act.

         (e)      ORGANIZATION AND GOOD STANDING. If such Purchaser is not an
individual, such Purchaser is duly organized, validly existing and in good
standing under the laws of the State or country of its formation.

         (f)      POWER AND AUTHORIZATION. If such Purchaser is not an
individual, such Purchaser has the power and authority to enter into this
Agreement, and the execution, delivery and performance by such Purchaser of this
Agreement have been duly authorized by 

                                       13

<PAGE>

all necessary corporate or partnership action. This Agreement constitutes the
valid and binding obligation of such Purchaser, enforceable in accordance with
its terms, except as the enforceability thereof may be limited by bankruptcy,
insolvency or other laws relating to or affecting creditors' rights generally
and by general equitable principles.

          (g)     BROKERS OR FINDERS. There are, and there will be, no brokerage
commissions, finder's fees or similar items of compensation payable by the
Company in connection with any broker's or finder's arrangement or agreement
made by or on behalf of such Purchaser, and such Purchaser hereby indemnifies
the Company against the same.


                                    ARTICLE V

                             CONDITIONS TO CLOSINGS

         SECTION 5.01. CONDITIONS TO THE PURCHASERS' OBLIGATIONS. Each
Purchaser's obligation to purchase and pay for the Securities to be purchased by
it at the Closing is subject to the complete satisfaction by the Company, on or
before such Closing, of the following conditions:

         (a)      OPINION OF COMPANY'S COUNSEL. The Purchasers shall have
received from counsel for the Company, an opinion, dated the date of the Closing
Date, in the form set forth in EXHIBIT B hereto with respect to the Closing.

         (b)      REPRESENTATIONS AND WARRANTIES; OFFICER'S CERTIFICATE. The
Company's representations and warranties contained in Article III shall be true
and correct on and as of the date of the Closing with the same effect as if made
on and as of the date of the Closing. All agreements and conditions to be
performed or satisfied by the Company hereunder on or before the date of the
Closing shall have been duly performed or satisfied. The Company shall have
delivered to the Purchasers a certificate, dated the date of the Closing and
signed by the President of the Company, to such effect.

         (c)      CONSENTS AND APPROVALS. The Company shall have delivered to
the Purchasers a certificate, dated the date of the Closing and signed by the
President of the Company, listing any consents, waivers, approvals,
authorizations, registrations, filings and notifications (including without
limitation those of the character referred to in Section 3.08) which are
necessary, to which shall be attached evidence, satisfactory to the Purchasers,
that the same have been obtained or made and are in full force and effect, or
stating that none is necessary.

         (d)      CHARTER OF THE COMPANY. The Purchasers shall have received a
copy of the Company's Certificate of Incorporation thereof, certified as of a
recent date by the Delaware Secretary of State.

                                       14

<PAGE>

         (e)      CLOSING DOCUMENTS. The Purchasers shall have received (i)
certificates representing the Shares registered in the names of the Purchasers,
(ii) such certificates as to the good standing of the Company and certificates
of officers of the Company as counsel to the Purchasers may reasonably request.

         (f)      SUFFICIENCY OF PROCEEDS. The Purchasers shall be satisfied
that the net proceeds from the issuance and sale of the Shares will be
sufficient to fund the Company's operations for a period of not less than three
(3) months following the Closing.

         (g)      PROCEEDINGS AND DOCUMENTS. All corporate and other proceedings
and all documents incident to the transactions contemplated by this Agreement
and the other agreements contemplated hereby shall be satisfactory in form and
substance to the Purchasers and their counsel, and the Purchasers and the
counsel shall have received copies of all documents and records relating
thereto. In addition, all financial, legal and other due diligence shall have
been completed to the reasonable satisfaction of the Purchasers.

         (h)      OTHER PURCHASERS. Each other Purchaser purchasing more than
10,000 Preferred Shares shall have tendered the purchase price and accepted
delivery of the Shares to be issued to them at the Closing as set forth in
SCHEDULE A.

         (i)      PAYMENT OF FEES AND DISBURSEMENTS OF PURCHASERS. The costs,
fees and expenses of counsel to the Purchasers identified in Section 9.14 shall
have been paid in full.

         (j)      BOARD OF DIRECTORS. Upon the Closing, the Company shall have
caused to be appointed or elected to the Company's Board of Directors a
designated representative of the holders of the Series A Preferred Stock.

         SECTION 5.02. CONDITIONS TO THE COMPANY'S OBLIGATIONS. The Company's
obligation to issue the Securities to the Purchasers at the Closing is subject
to the satisfaction of the following conditions:

         (a)      REPRESENTATIONS AND WARRANTIES. The representations and
warranties of each Purchaser contained in Article IV shall be true, correct and
complete in all material respects on and as of the date of the Closing with the
same force and effect as if they had been made on and as of the date of the
Closing.

         (b)      PAYMENT OF PURCHASE PRICE. Each Purchaser shall have delivered
to the Company and the Company shall have received payment in full of the cash
portion of the purchase price relating to the number of Securities to be
purchased by such Purchaser at the Closing.

                                       15

<PAGE>

         (d)      PROCEEDINGS AND DOCUMENTS. All corporate and other proceedings
and all documents incident to the transactions contemplated by this Agreement
and the other agreements contemplated hereby shall be satisfactory in form and
substance to the Company and its counsel, and the Company and its counsel shall
have received copies of all documents and records relating thereto.

                                       16

<PAGE>

                                   ARTICLE VI

                            COVENANTS OF THE COMPANY

         SECTION 6.01 AFFIRMATIVE COVENANTS. The Company covenants and agrees
that, from the date of the Closing and thereafter so long as Fifteen Percent
(15%) of the number of Preferred Shares originally issued shall remain
outstanding, it shall, unless it has received the prior written consent or
written waiver of at least 66-2/3% of the holders of such outstanding Preferred
Shares, perform and observe the following covenants and provisions, and shall
cause each Subsidiary, if and when such Subsidiary exists, to perform and
observe the following covenants and provisions as applicable to such Subsidiary:

         (a)      FINANCIAL STATEMENTS; OTHER REPORTS. The Company and each
Subsidiary will maintain proper books of account and records in accordance with
GAAP applied on a consistent basis, and will deliver to each holder of Series A
Preferred Stock (or Affiliate transferee thereof) owning at least fifty thousand
Preferred Shares (each, a "Rights Holder"):

                  (i) as soon as available and in any event within forty-five
         (45) days after the end of each of the first three quarters of each
         fiscal year of the Company, a copy of the Company's quarterly Report on
         Form 10-Q or Form 10-QSB, prepared in accordance with GAAP consistently
         applied (subject to year-end audit adjustments), and duly certified by
         the Chief Financial Officer of the Company;

                  (ii) as soon as available and in any event within ninety (90)
         days after the end of each fiscal year of the Company, a copy of
         Company's Annual report on Form 10-K or Form 10-KSB, prepared in
         accordance with GAAP consistently applied, together with the annual
         audit report for such year by one of the "big six" independent public
         accountants of recognized standing;

                  (iii) promptly after sending, making available, or filing the
         same, such other reports and financial statements as the Company shall
         send or make available to the stockholders of the Company; and

                  (iv) in the event that the Company ceases to become subject to
         the provisions of Section 13 or 15(d) of the Exchange Act, all reports
         and other documents that would be required to be filed by the Company
         under the Securities Act and the Exchange Act if the Company were then
         subject to the provisions of Section 13 or 15(d) of the Exchange Act,
         at the times and in the manner that such reports and documents would be
         required to be so filed.

         Neither the foregoing provisions of this Section 6.01(a) nor any other
provision of this Agreement shall be in limitation of any rights which a
Purchaser may have with respect to the books and records of the Company and its
Subsidiaries, or to inspect their properties or

                                       17

<PAGE>

discuss their affairs, finances and accounts, under the laws of the
jurisdictions in which they are incorporated.

         (b)      BOARD OBSERVATION; INSPECTION. Each Rights Holder and such
agents, advisors and counsel as such Rights Holder may designate, may, at its
expense, (i) attend and observe each meeting (whether physical or telephonic) of
the Company's Board of Directors or any committee thereof (and with respect to
which the Company covenants and agrees to provide each Rights Holder with
reasonable advance notice) or (ii) visit and inspect any of the properties of
the Company and each Subsidiary, examine the books of account of the Company and
each Subsidiary, take extracts therefrom and discuss the affairs, finances and
accounts of the Company and each Subsidiary with its officers and employees and
public accountants (and by this provision the Company and each Subsidiary hereby
authorizes said accountants to discuss with such Rights Holder and such persons
its finances and accounts), at reasonable times and with reasonable prior notice
during normal business hours. All such visits and inspections shall be conducted
in a manner which will not unreasonably interfere with the normal business
operations of the Company and each Subsidiary.

         (c)      PRESERVATION OF CORPORATE EXISTENCE. The Company and each
Subsidiary will preserve and maintain its corporate existence, rights,
franchises and privileges in the jurisdiction of its incorporation, and qualify
and remain qualified, as a foreign corporation in each jurisdiction in which
such qualification is necessary or desirable in view of its business and
operations or the ownership of its properties. The Company and each Subsidiary
shall preserve and maintain all licenses and other rights to use patents,
processes, licenses, trademarks, trade names, inventions, copyrights and other
Intangibles owned or possessed by it and necessary to the conduct of its
business.

         (d)      COMPLIANCE WITH LAWS. The Company will comply, and cause each
of its Subsidiaries to comply, with all applicable laws, rules, regulations and
orders of any governmental authority, noncompliance with which could materially
adversely affect its business or condition, financial or otherwise.

         (e)      BOARD OF DIRECTORS. The Company shall at all times maintain
provisions in its By-laws or certificate of incorporation indemnifying all
directors against liability and providing for the advancement of expenses to the
maximum extent permitted under the laws of the jurisdiction of its
incorporation.

         (f)      AVAILABILITY OF COMMON STOCK. The Company shall, from time to
time, in accordance with the laws of the state of its incorporation increase the
authorized amount of Common Stock if at any time the number of shares of Common
Stock remaining unissued and available for issuance shall be insufficient to
permit the conversion of all the then outstanding Preferred Shares.

                                       18

<PAGE>

         (g)      USE OF PROCEEDS. The Company shall use the net proceeds from
the issuance and sale of the Shares solely to fund ordinary operating expenses
of the Company.

         (h)      CERTAIN PATENT MATTERS. The Company represents that certain of
its intellectual property is licensed to it by the University of Florida
Research Foundation (the "UFRF"). The Company agrees to comply with its royalty
and other contractual obligations to UFRF in order to maintain its rights to the
intellectual property licensed by UFRF, in each case to the extent it is
commercially reasonable for the Company to do so.

         (i)      INDEMNIFICATION. The Company shall indemnify, defend and hold
each Purchaser and its officers, directors, partners, employees and agents and
each other Person which controls (within the meaning of the Securities Act) such
Purchaser or any of its partners harmless against all liability, loss or damage,
together with all reasonable costs and expenses related thereto (including legal
and accounting fees and expenses), arising from, relating to, or connected with
(i) the untruth, inaccuracy or breach of any representations, warranties or
covenants contained herein or (ii) the use, generation, storage, release,
threatened release, discharge, disposal or presence of Hazardous Materials (as
defined below) on, under or about any properties owned or leased by the Company
by any Person during the period that the Company was the legal or equitable
owner of any properties owned or leased by the Company or which occurred prior
to such time and was otherwise actually known by, or should have been known by,
the Company. The obligation of the Company to indemnify each Purchaser and its
officers, directors, partners, employees and agents and each other Person which
controls (within the meaning of the Securities Act) such Purchaser or any of its
partners shall specifically cover and include, without limitation, all fines and
penalties imposed by federal, state or local authorities, costs of removing or
neutralizing the Hazardous Materials, injury to the property adjoining any
properties owned or leased by the Company, injury to persons living or working
on or about any properties owned or leased by the Company or adjoining or
otherwise affecting property, and all other indirect or consequential damages
incurred by each Purchaser and its officers, directors, partners, employees and
agents and each other Person which controls (within the meaning of the
Securities Act) such Purchaser or any of its partners.

         SECTION 6.02 CERTAIN NEGATIVE COVENANTS. Without limiting any other
covenants or provisions hereof, the Company covenants and agrees that it will
comply with and observe the following negative covenants and provisions, and
will cause each Subsidiary to comply with and observe such of the following
covenants and provisions as are applicable to such Subsidiary, if and when such
Subsidiary exists, and will not without the written consent or written waiver of
the holders of at least 66-2/3% of the holders of the Series A Preferred Stock,
do any of the actions set forth in the following covenants and provisions so
long as any Series A Preferred Stock remains outstanding:

                                       19

<PAGE>

         (a)      NO AVOIDANCE. The Company will not, by amendment of its
Certificate of Incorporation or through any consolidation, merger,
reorganization, transfer of assets, dissolution, issue or sale of securities or
any other voluntary action, avoid or seek to avoid the observance or performance
of any of the terms of this Agreement or the certificates evidencing the
issuance of the Conversion Shares. Without limiting the generality of the
foregoing, the Company (i) will not permit the par value or the determined or
stated value of any shares of the Company's Common Stock receivable upon the
conversion of the Preferred Shares to exceed the amount payable therefor upon
such exercise, (ii) will take all such action as may be necessary or appropriate
in order that the Company may validly and legally issue fully paid and
non-assessable shares of the Company's Common Stock, upon the conversion of the
Preferred Shares from time to time outstanding, including, without limitation,
amending its Certificate of Incorporation to reduce or eliminate the par value
of the Common Stock and (iii) will not take any action which results in an
adjustment in the number of Conversion Shares obtainable upon the conversion of
the Preferred Shares if the total number of shares of the Company's Common Stock
(or other securities) issuable after such action upon the exercise or conversion
of all of the then-outstanding Preferred Shares would exceed the total number of
shares of the Company's Common Stock (or other securities) then authorized by
the Company's Certificate of Incorporation and available for purpose of issuance
upon such exercise.

         (b)      PROTECTIVE PROVISIONS. The Company shall not engage in any of
the actions specified in Section 5 of the Series A Certificate of Designation.

         (c)      TRANSACTIONS WITH RELATED PARTIES. Other than in the ordinary
course of business of the Company, neither the Company nor any Subsidiary will
engage in any transaction with, or enter into any contract, agreement or other
arrangement providing for, the employment of, furnishing of services by, rental
of real or personal property from, or otherwise requiring payments to, any
officer, employee or director of the Company or any Related Party of such
persons or entities (other than pursuant to the terms of employment or
consulting arrangements by the Company disclosed in the Company's SEC Reports or
any such agreements that hereafter shall be approved by the Company's Board of
Directors). For purposes of this Agreement, "Related Party" shall mean any
individual who is a director or officer of the Company; any Person who is an
"affiliate" of the Company, as such term is defined in Rule 405 under the
Securities Act; any Person that owns five percent or more of the outstanding
equity stock of any class of the Company; any member of the family (as defined
in Section 267(c)(4) of the Internal Revenue Code) of, or any individual who has
the same home as, any individual (or the spouse of any such individual)
described above; and any trust, estate or partnership of which an individual
described above is a guarantor, fiduciary, beneficiary or partner.

         (d)      BUSINESS. The Company will only engage in the business of
research, development and production of pharmaceutical products and activities
ancillary thereto.

                                       20

<PAGE>

         (e)      CONFLICTING AGREEMENTS. The Company will not enter into any
agreement which by its terms might restrict the performance of the Company's
obligations pursuant to the terms of this Agreement or the provisions relating
to the Series A Preferred Stock included in the Series A Certificate of
Designation, including, but not limited to, registration rights and the payment
of dividends on, the redemption, voting or conversion of the Series A Preferred
Stock.

         (f)      EMPLOYEE STOCK AND STOCK OPTIONS. The Company will not issue
Common Stock or stock options to its officers, directors, employees or others
who render services to the Company except for issuances of stock options and
issuances of shares of Common Stock upon exercise of such stock options which,
in each case, constitute Excluded Shares (as defined in the Series A Certificate
of Designation).

         (g)      NO CHANGES. Between the date of execution of this Agreement
and the Closing Date, and except for the filing of the Series A Certificate of
Designation, the Company shall not, without the prior written consent of the
Purchasers: (a) issue any capital stock or any option, warrant or right to
acquire capital stock; (b) organize any Subsidiary; (c) make any change in its
capital stock; (d) declare or pay any dividends or make any distributions in
respect of its capital stock; (e) enter into any merger or consolidation or
other business combination, (f) repurchase any stock, or (g) enter into any
material transaction, agreement, understanding or commitment; provided that, for
purposes of (g) above, the prior written consent of the Purchasers shall not be
required in the event that the directors selected by the Purchasers consent to
such action.

         (h)      ENVIRONMENTAL MATTERS.

                           (i) The Company shall promptly advise each holder of
the Series A Preferred Stock in writing of any pending or threatened claim,
demand or action by any governmental body or third party relating to any
Hazardous Materials affecting any properties owned or leased by the Company of
which it has knowledge. The Company shall not discharge, place, release, spill
or dispose of any Hazardous Materials or any other pollutants or effluents upon
any properties owned or leased by the Company or elsewhere (including, but not
limited to, underground injection of such substances) other than in compliance
with the Applicable Environmental Laws and the Company shall not discharge into
the air any emission which would require a permit under the Clean Air Act or its
state counterparts or any other Applicable Environmental Laws. The stockholders
of the Company shall have no control over, or authority with respect to, the
waste disposal operations of the Company.

                           (ii) The use of any property by the Company, and any
future development, construction and operation of property purchased, leased or
otherwise acquired by the Company, shall, in all respects, comply with, and are
or shall be, lawful, permitted and conforming uses in all material respects
under all applicable building, fire, safety, subdivision,

                                       21

<PAGE>

zoning, sewer, environmental, securities, health, insurance and other laws,
ordinances, rules, regulations and plan approval conditions of any governmental
or public body or authority.

         SECTION 6.03 CERTAIN ADDITIONAL NEGATIVE COVENANTS. Without limiting
any other covenants or provisions hereof, the Company covenants and agrees that
it will comply with and observe the following negative covenants and provisions,
and will cause each Subsidiary to comply with and observe such of the following
covenants and provisions as are applicable to such Subsidiary, if and when such
Subsidiary exists, and will not without the written consent or written waiver
(which consent or waiver shall not be unreasonably withheld) of the holders of
at least 66-2/3% of the holders of the Series A Preferred Stock, do any of the
actions set forth in the following covenants and provisions so long as any
Series A Preferred Stock remains outstanding:

         (a)      INDEBTEDNESS: COMMITMENTS. The Company will not incur (a)
Indebtedness in excess of $100,000, or (b) Commitments (defined below) in excess
of $100,000 in the aggregate. For purposes of this Agreement, "Commitments"
shall mean all obligations of the Company and its Subsidiaries, contingent or
otherwise, pursuant to long-term leases (other than leases for real property),
or other obligations pursuant to similar agreements which, in each case, are
required to be capitalized in accordance with GAAP.

         (b)      GUARANTEES. The Company will not incur any guarantee or
similar contingent obligation in respect of the Indebtedness of others in excess
of $100,000, whether or not classified on the Company's balance sheet as a
liability.

         (c)      NO ACQUISITIONS. The Company shall not, nor shall it permit
any of its Subsidiaries to, acquire or agree to acquire by merging or
consolidating with, or by purchasing a substantial equity interest in or a
substantial portion of the assets of, or by any other manner, any business or
any corporation, partnership, association or other business organization or
division thereof or otherwise acquire or agree to acquire, or permit any of its
Subsidiaries to acquire or agree to acquire, any assets for a purchase price
which is in excess of ten percent (10%) of the Company's net worth.

         (d)      NO DISPOSITIONS. Other than in the ordinary course of business
and other than dispositions of obsolete assets, the Company will not, nor shall
it permit any of its Subsidiaries to, sell, lease, encumber or otherwise dispose
of or agree to sell, lease, encumber or otherwise dispose of, in any transaction
or series of related transactions, assets having an aggregate book value in
excess of ten percent (10%) of the Company's net worth.

         SECTION 6.04.

         (a)      TERMINATION OF SECTION 6.03 CERTAIN ADDITIONAL NEGATIVE
COVENANTS. The Company's obligations under the provisions set forth in Section
6.03 above shall terminate on the 

                                       22

<PAGE>

earlier to occur of (i) the second anniversary of the Closing Date or (ii) the
date on which the closing price of the Common Shares of the Company on NASDAQ
(or, if not then listed on NASDAQ, listed on any other national securities
market) shall have exceeded $10.00 per share (subject to adjustment) for a
period of 60 consecutive days.


                                   ARTICLE VII

                               REGISTRATION RIGHTS

         SECTION 7.01.

         (a)      INCIDENTAL REGISTRATION. If the Company at any time (other
than pursuant to subsection (b) below)) proposes to register any of its
securities under the Securities Act for sale to the public, whether for its own
account or for the account of other security holders or both (except with
respect to registration statements on Forms S-4, S-8 or any successor to such
forms or another form not available for registering the Registrable Securities
for sale to the public), each such time it will promptly give written notice to
all holders of the Registrable Securities of its intention so to do. Upon the
written request of any such holder, received by the Company within thirty (30)
days after the giving of any such notice by the Company, to register any or all
of its Registrable Securities, the Company will use its best efforts to cause
the Registrable Securities as to which registration shall have been so requested
to be included in the securities to be covered by the registration statement
proposed to be filed by the Company, all to the extent requisite to permit the
sale or other disposition by the holder (in accordance with its written request)
of such Registrable Securities so registered. If the registration of which the
Company gives notice is for a registered public offering involving an
underwriting, the Company shall so advise the holders of Registrable Securities
as a part of the written notice given pursuant to this Section 7.01(a). In such
event the right of any holder of Registrable Securities to registration pursuant
to this Section 7.01(a) shall be conditioned upon such holder's participation in
such underwriting to the extent provided herein. All holders of Registrable
Securities proposing to distribute their securities through such underwriting
shall (together with the Company and the Other Shareholders (as defined below)
distributing their securities through such underwriting) enter into an
underwriting agreement in customary form with the underwriter or underwriters
selected for underwriting by the Company. Notwithstanding any other provision of
this Section 7.01(a), if the underwriter determines that marketing factors
require a limitation on the number of shares to be underwritten, the Company
shall so advise all holders of securities requesting registration of any
limitations on the number of shares to be underwritten, and the number of shares
of securities that are entitled to be included in the registration and
underwriting shall be allocated (i) first to the Company with respect to shares
of Common Stock being sold for its own account; and (ii) then, to holders of
Registrable Securities and Other Shareholders requesting registration in
proportion, as nearly as practicable, to the respective amounts of securities
owned by them. Notwithstanding the foregoing provisions, the Company may
withdraw any registration statement referred to in this Section 7.01(a) without
thereby incurring any liability to

                                       23

<PAGE>

the holders of Registrable Securities. If any holder of Registrable Securities
disapproves of the terms of any such underwriting, it may elect to withdraw
therefrom by written notice to the Company and the underwriter. Any Registrable
Securities or other securities excluded or withdrawn from such underwriting
shall be withdrawn from such registration.

         (b)      REGISTRATION ON FORM S-3.

         (i)  In addition to the rights provided in Section 7.01(a), subject to
              a limit of one (1) registration hereunder in any six (6) month
              period, if at any time (A) any holder or holders of the
              Registrable Securities request that the Company file a
              registration statement on Form S-3 or any comparable or successor
              form thereto for a public offering of all or any portion of the
              shares of Registrable Securities held by such requesting holder or
              holders, the reasonably anticipated aggregate price to the public
              of which would exceed US $500,000, and (B) the Company is a
              registrant entitled to use Form S-3 or any comparable or successor
              form thereto to register such shares, then the Company shall use
              its best efforts to register under the Securities Act on Form S-3
              or any comparable or successor form thereto, for public sale in
              accordance with the method of disposition specified in such
              notice, the number of shares of Registrable Securities specified
              in such notice.

         (ii) Following receipt of any notice under this Section 7.01(b), the
              Company shall immediately notify all holders of Registrable
              Securities from whom notice has not been received and such holders
              shall then be entitled within thirty (30) days after receipt of
              such notice from the Company to request the Company to include in
              the requested registration all or any portion of their shares of
              Registrable Securities. The Company shall use its best efforts to
              register under the Securities Act, for public sale in accordance
              with the method of disposition specified in the notice from
              requesting holders described in paragraph (a) above, within 45
              days of its receipt of such notice, the number of shares of
              Registrable Securities specified in such notice (and in all
              notices received by the Company from other holders within thirty
              (30) days after the receipt of such notice by such holders).
              Notwithstanding anything to the contrary contained herein, no
              request may be made under this Section 7.01(b) after the effective
              date of a registration statement filed by the Company covering a
              firm commitment underwritten public offering and prior to the
              later to occur of the completion of the period of distribution for
              such offering or 90 days after the effective date of such
              registration statement.

         (iii)If the holders requesting such registration intend to distribute
              the Registrable Securities covered by their request by means of an
              underwriting, they shall so advise the Company as a part of their
              request made pursuant to this Section 7.01(b) and the Company
              shall include such information in the written notice referred to
              in paragraph (ii) above. The right of any holder to registration
              pursuant to this Section 7.01(b) shall be conditioned upon such
              holder's agreeing to participate in 

                                       24

<PAGE>

              such underwriting and to permit inclusion of such holder's
              Registrable Securities in the underwriting. If such method of
              disposition is an underwritten public offering, the holders of at
              least a majority in interest of the shares of Registrable
              Securities to be sold in such offering may designate the managing
              underwriter of such offering, which managing underwriter shall be
              reasonably acceptable to the Company. A holder may elect to
              include in such underwriting all or a part of the Registrable
              Securities it holds.

         (iv) A registration statement filed pursuant to this Section 7.01(b)
              may, subject to the following provisions, include (A) shares of
              Common Stock for sale by the Company for its own account, (B)
              shares of Common Stock held by officers or directors of the
              Company and (C) shares of Common Stock held by persons who are
              entitled to include such shares in such registration (the "Other
              Shareholders"), in each case for sale in accordance with the
              method of disposition specified by the requesting holders;
              PROVIDED, HOWEVER, that if the number of shares so included
              pursuant to clauses (A), (B) and (C) above exceeds the number of
              Registrable Securities presented by the holders requesting
              registration thereof, then such registration shall be deemed to be
              a registration in accordance with Section 7.01(a). If such
              registration shall be underwritten, the Company, such officers and
              directors and Other Shareholders proposing to distribute their
              shares through such underwriting shall enter into an underwriting
              agreement in customary form with the representative of the
              underwriter or underwriters selected for such underwriting on
              terms no less favorable to such officers, directors or Other
              Shareholders than the terms afforded the holders of Registrable
              Securities. If and to the extent that the managing underwriter
              determines that marketing factors require a limitation on the
              number of shares to be included in such registration, then the
              shares of Common Stock held by officers or directors (other than
              Registrable Securities) of the Company or by Other Shareholders
              (other than Registrable Securities) and shares of Common Stock to
              be sold by the Company for its own account shall be excluded from
              such registration to the extent so required by such managing
              underwriter, and unless the holders of such shares and the Company
              have otherwise agreed in writing, such exclusion shall be applied
              first to the shares held by the directors and officers and the
              Other Shareholders to the extent required by the managing
              underwriter, then to the shares of Common Stock of the Company to
              be included for its own account to the extent required by the
              managing underwriter. If the managing underwriter determines that
              marketing factors require a limitation of the number of
              Registrable Securities to be registered under this Section
              7.01(a), then Registrable Securities shall be excluded in such
              manner that the securities to be sold shall be allocated among the
              selling holders pro rata based on their ownership of Registrable
              Securities. In any event all securities to be sold other than
              Registrable Securities will be excluded prior to any exclusion of
              Registrable Securities. No Registrable Securities or any other
              security excluded from the underwriting by reason of the
              underwriter's marketing limitation

                                       25

<PAGE>

              shall be included in such registration. If any holder of
              Registrable Securities, officer, director or Other Shareholder who
              has requested inclusion in such registration as provided above,
              disapproves of the terms of the underwriting, such holder of
              securities may elect to withdraw therefrom by written notice to
              the Company and the managing underwriter. The securities so
              withdrawn shall also be withdrawn from registration. Except for
              registration statements on Form S-4, S-8 or any comparable form or
              successor thereto, the Company will not file with the Commission
              any other registration statement with respect to its Common Stock,
              whether for its own account or that of other stockholders, from
              the date of receipt of a notice from requesting holders pursuant
              to this Section 4.3 until the completion of the period of
              distribution of the registration contemplated thereby or 120 days
              after the effective date of such registration, whichever is later.

         SECTION 7.02. REGISTRATION PROCEDURES. In connection with the Company's
requirement to use its best efforts to effect the registration of any
Registrable Shares under the Securities Act, the Company will, as expeditiously
as possible:

              (a)   prepare and file with the Commission such amendments and
supplements to such registration statement and the prospectus used in connection
therewith as may be necessary to keep such registration statement effective for
the period specified herein and comply with the provisions of the Securities Act
with respect to the disposition of all Registrable Shares covered by such
registration statement in accordance with the sellers' intended method of
disposition set forth in such registration statement for such period;

              (b)   furnish to each seller of Registrable Shares such number of
copies of the registration statement and each such amendment and supplement
thereto (in each case including all exhibits) and the prospectus included
therein (including each preliminary prospectus) as such persons reasonably may
request in order to facilitate the public sale or other disposition of the
Registrable Shares covered by such registration statement;

              (c)   use its best efforts to register or qualify the Registrable
Shares covered by such registration statement under the securities or "blue sky"
laws of such jurisdictions as the sellers of Registrable Shares reasonably shall
request, PROVIDED, HOWEVER, that the Company shall not for any such purpose be
required to qualify generally to transact business as a foreign corporation in
any jurisdiction where it is not so qualified or to consent to general service
of process in any such jurisdiction, unless the Company is already subject to
service in such jurisdiction;

              (d)   use its best efforts to list the Registrable Shares covered
by such registration statement with any securities exchange on which the Common
Stock of the Company is then listed;

              (e)   comply with all applicable rules and regulations under the
Securities Act

                                       26

<PAGE>

and Exchange Act;

              (f)   immediately notify each seller of Registrable Shares under
such registration statement, at any time when a prospectus relating thereto is
required to be delivered under the Securities Act, of the happening of any event
of which the Company has knowledge as a result of which the prospectus contained
in such registration statement, as then in effect, includes an untrue statement
of a material fact or omits to state a material fact required to be stated
therein or necessary to make the statements therein not misleading in light of
the circumstances then existing, and promptly prepare and furnish to such seller
a reasonable number of copies of a prospectus supplemented or amended so that,
as thereafter delivered to the purchasers of such Registrable Shares, such
prospectus shall not include an untrue statement of a material fact or omit to
state a material fact required to be stated therein or necessary to make the
statements therein not misleading in light of the circumstances then existing;

              (g)   make available for inspection by each seller of Registrable
Shares, and any attorney, accountant or other agent retained by such seller
reasonable access to all financial and other records, pertinent corporate
documents and properties of the Company, as such parties may reasonably request,
and cause the Company's officers, directors and employees to supply all
information reasonably requested by any such seller, attorney, accountant or
agent in connection with such registration statement;

              (h)   cooperate with the selling holders of Registrable Shares to
facilitate the timely preparation and delivery of certificates representing
Registrable Shares to be sold, such certificates to be in such denominations and
registered in such names as such holders or the managing underwriter may request
at least two business days prior to any sale of Registrable Shares; and

              (i)   permit any holder of Registrable Shares which holder, in the
sole and exclusive judgment, exercised in good faith, of such holder, might be
deemed to be a controlling person of the Company, to participate in good faith
in the preparation of such registration or comparable statement and to require
the insertion therein of material, furnished to the Company in writing, which in
the reasonable judgment of such holder and its counsel should be included.

               In connection with each registration hereunder, the sellers of
Registrable Shares will furnish to the Company in writing such information
requested by the Company with respect to themselves and the proposed
distribution by them as shall be necessary in order to assure compliance with
Federal and applicable state securities laws; and such sellers shall provide the
Company with appropriate representations with respect to the accuracy of such
information.

         SECTION 7.03. EXPENSES. All expenses incurred in complying with
Sections

                                       27

<PAGE>

7.01 and 7.02, including, without limitation, all registration and filing fees,
printing expenses, fees and disbursements of counsel and independent public
accountants for the Company, fees and expenses (including counsel fees) incurred
in connection with complying with state securities or "blue sky" laws, fees of
the National Association of Securities Dealers, Inc., transfer taxes, fees of
transfer agents and registrars, and reasonable fees and disbursements of one
counsel selected by a majority in interest of the sellers of Registrable Shares,
shall be paid by the Company.

         SECTION 7.04.     INDEMNIFICATION AND CONTRIBUTION.

              (a)   In the event of a registration of any of the Registrable
Shares under the Securities Act pursuant to this Article VII, the Company will
indemnify and hold harmless each holder of Registrable Shares, its officers,
directors and partners, and each other person, if any, who controls such holder
within the meaning of the Securities Act, against any losses, claims, damages or
liabilities, joint or several, to which such holder, officer, director, partner
or controlling person may become subject under the Securities Act or otherwise,
insofar as such losses, claims, damages or liabilities (or actions in respect
thereof) arise out of or are based upon (i) any untrue statement or alleged
untrue statement of any material fact contained in any prospectus, offering
circular or other document incident to such registration (including any related
notification, registration statement under which such Registrable Shares were
registered under the Securities Act pursuant to Section 7.01, any preliminary
prospectus or final prospectus contained therein, or any amendment or supplement
thereof), (ii) any blue sky application or other document executed by the
Company specifically for that purpose or based upon written information
furnished by the Company filed in any state or other jurisdiction in order to
qualify any or all of the Registrable Shares under the securities laws thereof
(any such application, document or information herein called a "Blue Sky
Application"), (iii) any omission or alleged omission to state in any such
registration statement, prospectus, amendment or supplement or in any Blue Sky
Applications executed or filed by the Company, a material fact required to be
stated therein or necessary to make the statements therein not misleading, (iv)
any violation by the Company or its agents of the Securities Act or any rule or
regulation promulgated under the Securities Act applicable to the Company or its
agents and relating to action or inaction required of the Company in connection
with such registration, or (v) any failure to register or qualify the
Registrable Shares in any state where the Company or its agents has
affirmatively undertaken or agreed in writing that the Company will undertake
such registration or qualification (provided that in such instance the Company
shall not be so liable if it has used its best efforts to so register or qualify
the Registrable Shares) and will reimburse each such seller, and such officer,
director and partner, and each such controlling person for any legal or other
expenses reasonably incurred by them in connection with investigating or
defending any such loss, claim, damage, liability or action, promptly after
being so incurred, PROVIDED, HOWEVER, that the Company will not be liable in any
such case if and to the extent that any such loss, claim, damage or liability
arises out of or is based upon an untrue statement or alleged untrue statement
or omission or alleged omission so made in conformity with written information
furnished by any such holder or any such controlling 

                                       28

<PAGE>

person in writing specifically for use in such registration statement or
prospectus.

              (b)   In the event of a registration of any of the Registrable
Shares under the Securities Act pursuant to this Article VII, each seller of
such Registrable Shares thereunder, severally and not jointly, will indemnify
and hold harmless the Company, each person, if any, who controls the Company
within the meaning of the Securities Act, each officer of the Company who signs
the registration statement, each director of the Company, each other seller of
Registrable Shares against all losses, claims, damages or liabilities, joint or
several, to which the Company or such officer, director or other seller may
become subject under the Securities Act or otherwise, insofar as such losses,
claims, damages or liabilities (or actions in respect thereof) arise out of or
are based upon any untrue statement or alleged untrue statement of any material
fact contained in any prospectus offering circular or other document incident to
such registration (including any related notification, registration statement
under which such Registrable Shares were registered under the Securities Act
pursuant to Section 7.01, any preliminary prospectus or final prospectus
contained therein, or any amendment or supplement thereof), or any Blue Sky
Application or arise out of or are based upon the omission or alleged omission
to state therein a material fact required to be stated therein or necessary to
make the statements therein not misleading, and will reimburse the Company and
each such officer, director and other seller for any legal or other expenses
reasonably incurred by them in connection with investigating or defending any
such loss, claim, damage, liability or action, promptly after being so incurred,
PROVIDED, HOWEVER, that such seller will be liable hereunder in any such case if
and only to the extent that any such loss, claim, damage or liability arises out
of or is based upon an untrue statement or alleged untrue statement or omission
or alleged omission made in reliance upon and in conformity with information
pertaining to such seller, as such, furnished in writing to the Company by such
seller specifically for use in such registration statement or prospectus; and
PROVIDED, FURTHER, HOWEVER, that the liability of each seller hereunder shall be
limited to the proportion of any such loss, claim, damage, liability or expense
which is equal to the proportion that the public offering price of the
securities sold by such seller under such registration statement bears to the
total public offering price of all securities sold thereunder, but not in any
event to exceed the proceeds received by such seller from the sale of
Registrable Shares covered by such registration statement.

              (c)   Promptly after receipt by an indemnified party hereunder of
notice of the commencement of any action, such indemnified party shall, if a
claim in respect thereof is to be made against the indemnifying party hereunder,
notify the indemnifying party in writing thereof, but the omission so to notify
the indemnifying party shall not relieve it from any liability which it may have
to such indemnified party other than under this Section and shall only relieve
it from any liability which it may have to such indemnified party under this
Section if and to the extent the indemnifying party is prejudiced by such
omission. In case any such action shall be brought against any indemnified party
and it shall notify the indemnifying party of the commencement thereof, the
indemnifying party shall be entitled to participate in and, to the extent it
shall wish, to assume and undertake the defense thereof with counsel
satisfactory to such indemnified party, and, after notice from the indemnifying
party to such 

                                       29

<PAGE>

indemnified party of its election so to assume and undertake the defense
thereof, the indemnifying party shall not be liable to such indemnified party
under this Section for any legal expenses subsequently incurred by such
indemnified party in connection with the defense thereof other than reasonable
costs of investigation and of liaison with counsel so selected, PROVIDED,
HOWEVER, that, if the defendants in any such action include both the indemnified
party and the indemnifying party and the indemnified party shall have reasonably
concluded that there may be reasonable defenses available to it which are
different from or additional to those available to the indemnifying party or
that the interests of the indemnified party reasonably may be deemed to conflict
with the interests of the indemnifying party, the indemnified party shall have
the right to select a separate counsel and to assume such legal defenses and
otherwise to participate in the defense of such action, with the expenses and
fees of such separate counsel and other expenses related to such participation
to be reimbursed by the indemnifying party as incurred. No indemnifying party,
in the defense of any such claim or action, shall, except with the consent of
each indemnified party, consent to entry of any judgment or enter into any
settlement which does not include as an unconditional term thereof the giving by
the claimant or plaintiff to such indemnified party of a release from all
liability in respect to such claim or action. Each indemnified party shall
furnish such information regarding itself or the claim in question as an
indemnifying party may reasonably request in writing and as shall be reasonably
required in connection with defense of such claim and litigation resulting
therefrom.

              (d)   In order to provide for just and equitable contribution to
joint liability under the Securities Act in any case in which either (i) the
Company, any holder of Registrable Shares exercising rights under this
Agreement, or any controlling person of any such holder, makes a claim for
indemnification pursuant to this Section but it is judicially determined (by the
entry of a final judgment or decree by a court of competent jurisdiction and the
expiration of time to appeal or the denial of the last right of appeal) that
such indemnification may not be enforced in such case notwithstanding the fact
that this Section provides for indemnification in such case, or (ii)
contribution under the Securities Act may be required on the part of the
Company, any such selling holder or any such controlling person in circumstances
for which indemnification is provided under this Section; then, and in each such
case, the Company and such holder will contribute to the aggregate losses,
claims, damages or liabilities to which they may be subject (after contribution
from others) in such proportion so that such holder is responsible for the
portion represented by the percentage that the public offering price of its
Registrable Shares offered by the registration statement bears to the public
offering price of all securities offered by such registration statement, and the
Company is responsible for the remaining portion; PROVIDED, HOWEVER, that, in
any such case, (A) no such holder of Registrable Shares will be required to
contribute any amount in excess of the proceeds received from the sale of all
such Registrable Shares offered by it pursuant to such registration statement;
and (B) no person or entity guilty of fraudulent misrepresentation (within the
meaning of Section 11(f) of the Securities Act) will be entitled to contribution
from any person or entity who was not guilty of such fraudulent
misrepresentation.

                                       30

<PAGE>

              (e)   The indemnities and obligations provided in this Section
shall survive the transfer of any Registrable Shares by such holder.


                                  ARTICLE VIII

                          LIMITATIONS AND RESTRICTIONS

         SECTION 8.01. RESTRICTIONS ON SALES BY PURCHASERS. Each Purchaser
agrees that until the first anniversary of the Closing hereunder, it will not,
nor will it permit any of its Affiliates to sell or propose to sell any Shares
purchased at the Closing except as follows:

         (a)      A Purchaser may transfer Shares to any of its Affiliates;

         (b)      A Purchaser may sell its Shares pursuant to a tender offer or
exchange offer for all outstanding shares of the Company's Common Stock approved
by the Company's Board of Directors;

         (c)      A Purchaser may (i) if such Purchaser is a partnership,
distribute Shares to the partners of such partnership, (ii) transfer Shares to
such Purchaser's children and/or grandchildren and/or such Purchaser's spouse's
children and/or grandchildren, whether biological or adopted (collectively, such
Purchaser's "descendants"), (iii) transfer Shares to the trustee or trustees of
a trust revocable solely by such Purchaser, (iv) transfer Shares to the trustee
or trustees of an irrevocable trust the sole beneficiaries of which are such
Purchaser, his spouse and/or his descendants, (v) transfer Shares to a guardian
or conservator, or (vi) transfer any such shares in the event of death to such
Purchaser's heirs or the beneficiaries or the legal representative of his
estate; and

         (d)      A Purchaser may sell all or any part of the Shares owned by
Purchaser or its Affiliates pursuant to the registration rights provisions
contained in Article VII.


                                   ARTICLE IX

                                  MISCELLANEOUS

         SECTION 9.01. NOTICES. All notices, requests, consents and other
communications hereunder shall be in writing, shall be addressed to the
receiving party's address set forth below or to such other address as a party
may designate by notice hereunder, and shall be either (i) delivered by hand,
(ii) made by telecopy or facsimile transmission (receipt confirmed) or (iii)
sent by international overnight or express courier.

                                       31

<PAGE>

If to the Company:                          SunPharm Corporation
                                            The Veranda, Suite 301
                                            814 Highway AIA
                                            Ponte Vedra Beach, FL 32082
                                            Attn:  President
                                            FAX:  (904) 394-2727

with a copy to    :                         Cecilia Bryant, General Counsel
                                            1400 Prudential Drive, Suite 7
                                            Jacksonville, FL  32207
                                            FAX:  (904) 398-5477

If to a Purchaser:                          at its address on Schedule A hereto

with a copy to:                             Mintz Levin Cohn Ferris Glovsky and
                                            Popeo, P.C.
                                            One Financial Center
                                            Boston, MA  02111
                                            Attn:  Lewis J. Geffen, Esq.
                                            FAX:  (617) 542-2241

All notices, requests, consents and other communications hereunder shall be
deemed to have been given either (i) if by hand, at the time of the delivery
thereof to the receiving party at the address of such party set forth above,
(ii) if made by telecopy or facsimile transmission, at the time that receipt
thereof has been acknowledged by electronic confirmation or otherwise, or (iii)
if sent by overnight or express courier, on the Business Day following the day
such notice is delivered to the courier service.

         SECTION 9.02. LEGENDS. Each Purchaser acknowledges that, until
registered under the Securities Act and any applicable state securities laws or
transferred pursuant to the provisions of Rule 144 promulgated under the
Securities Act ("Rule 144"), each certificate representing a Share, whether upon
initial issuance or upon any transfer thereof, shall bear a legend (and the
Company and its transfer agent shall make a notation on its books of transfer to
such effect), prominently stamped or printed thereon, in substantially the
following form:

         "THE SECURITIES REPRESENTED BY THIS CERTIFICATE HAVE NOT BEEN
         REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE "ACT"), OR
         THE SECURITIES LAWS OF ANY APPLICABLE STATE OR OTHER JURISDICTION, HAVE
         BEEN ACQUIRED FOR INVESTMENT AND NOT WITH A VIEW TO DISTRIBUTION OR
         RESALE AND MAY NOT BE SOLD, MORTGAGED, PLEDGED, HYPOTHECATED OR
         OTHERWISE TRANSFERRED IN THE 

                                       32

<PAGE>

         ABSENCE OF (1) AN EFFECTIVE REGISTRATION STATEMENT COVERING SUCH
         SECURITIES UNDER THE ACT AND ANY SECURITIES LAWS OF ANY APPLICABLE
         STATE OR OTHER JURISDICTION, (2) AN EXEMPTION FROM REGISTRATION ,
         PURSUANT TO RULE 144 UNDER THE ACT OR (3) A WRITTEN OPINION IN FORM AND
         SUBSTANCE SATISFACTORY TO THE COMPANY TO THE EFFECT THAT REGISTRATION
         IS NOT REQUIRED PURSUANT TO SOME OTHER APPLICABLE EXEMPTION FROM
         REGISTRATION UNDER THE ACT OR UNDER OTHER APPLICABLE SECURITIES LAWS."

         SECTION 9.03. ENTIRE AGREEMENT. This Agreement embodies the entire
agreement and understanding between the parties hereto with respect to the
provisions hereof and supersedes all prior oral or written agreements and
understandings relating to the provisions hereof, and no other statement,
representation, warranty, covenant or agreement of any kind not expressly set
forth in this Agreement shall affect, or be used to interpret, change or
restrict, the express terms and provisions of this Agreement.

         SECTION 9.04. MODIFICATIONS AND AMENDMENTS. The terms and provisions of
this Agreement may be modified or amended only by written agreement executed by
the Company and the holders of not less than a majority of the outstanding, with
the Series A Preferred Stock and the Common Stock voting together as a single
class.

         SECTION 9.05. WAIVERS AND CONSENTS. Except as otherwise expressly
provided herein, the terms and provisions of this Agreement may be waived, or
consent for the departure therefrom granted, only by written document executed
by the Company and the holders of not less than a majority of the outstanding
Shares. No such waiver or consent shall be deemed to be or shall constitute a
waiver or consent with respect to any other terms or provisions of this
Agreement, whether or not similar. Each such waiver or consent shall be
effective only in the specific instance and for the purpose for which it was
given, and shall not constitute a continuing waiver or consent.

         SECTION 9.06. ASSIGNMENT. The rights and obligations under this
Agreement may not be assigned by either party hereto without the prior written
consent of the other party (which consent shall not be unreasonably withheld),
except that a Purchaser without the consent of the Company may assign this
Agreement or any of its rights or obligations (i) to an Affiliate of the
Purchaser or to an entity with which the Purchaser shall merge or consolidate or
to which the Purchaser shall sell or assign all or substantially all of its
assets or (ii) in compliance with the provisions of Section 4.01(b) or Section
8.01.

         SECTION 9.07. BENEFIT. All statements, representations, warranties,
covenants and agreements in this Agreement shall be binding on the parties
hereto and shall inure to the benefit of the respective successors and permitted
assigns of each party hereto. Nothing in this 

                                       33

<PAGE>

Agreement shall be construed to create any rights or obligations except among
the parties hereto, and no person or entity shall be regarded as a third-party
beneficiary of this Agreement, except for the persons entitled to
indemnification pursuant to the provisions of Article VII.

         SECTION 9.08.     GOVERNING LAW. This Agreement and the rights and
obligations of the parties hereunder shall be construed in accordance with and
governed by the law of the State of Delaware, without giving effect to the
conflict of law principles thereof.

         SECTION 9.09.     SEVERABILITY. In the event that any court of
competent jurisdiction shall determine that any provision, or any portion
thereof, contained in this Agreement shall be unenforceable in any respect, then
such provision shall be deemed limited to the extent that such court deems it
enforceable, and as so limited shall remain in full force and effect. In the
event that such court shall deem any such provision, or portion thereof, wholly
unenforceable, the remaining provisions of this Agreement shall nevertheless
remain in full force and effect.

         SECTION 9.10.     INTERPRETATION. The parties hereto acknowledge and
agree that: (i) each party and its counsel reviewed and negotiated the terms and
provisions of this Agreement and have contributed to its revision; (ii) the rule
of construction to the effect that any ambiguities are resolved against the
drafting party shall not be employed in the interpretation of this Agreement;
and (iii) the terms and provisions of this Agreement shall be construed fairly
as to all parties hereto and not in favor of or against any party, regardless of
which party was generally responsible for the preparation of this Agreement.

         SECTION 9.11.     HEADINGS AND CAPTIONS. The headings and captions of
the various subdivisions of this Agreement are for convenience of reference only
and shall in no way modify, or affect the meaning or construction of any of the
terms or provisions hereof.

         SECTION 9.12.     ENFORCEMENT. Each of the parties hereto acknowledges
and agrees that the rights acquired by each party hereunder are unique and that
irreparable damage would occur in the event that any of the provisions of this
Agreement to be performed by the other party were not performed in accordance
with their specific terms or were otherwise breached. Accordingly, in addition
to any other remedy to which the parties hereto are entitled at law or in
equity, each party hereto shall be entitled to an injunction or injunctions to
prevent breaches of this Agreement by the other party.

         SECTION 9.13.     NO WAIVER OF RIGHTS, POWERS AND REMEDIES. No failure
or delay by a party hereto in exercising any right, power or remedy under this
Agreement, and no course of dealing between the parties hereto, shall operate as
a waiver of any such right, power or remedy of the party. No single or partial
exercise of any right, power or remedy under this Agreement by a party hereto,
nor any abandonment or discontinuance of steps to enforce any such right, power
or remedy, shall preclude such party from any other or further exercise thereof
or the exercise of any other right, power or remedy hereunder. The election 

                                       34

<PAGE>

of any remedy by a party hereto shall not constitute a waiver of the right of
such party to pursue other available remedies. No notice to or demand on a party
not expressly required under this Agreement shall entitle the party receiving
such notice or demand to any other or further notice or demand in similar or
other circumstances or constitute a waiver of the rights of the party giving
such notice or demand to any other or further action in any circumstances
without such notice or demand.

         SECTION 9.14.     EXPENSES. Each of the parties hereto shall pay its
own fees and expenses in connection with this Agreement and the transactions
contemplated hereby whether or not the transactions contemplated hereby are
consummated, except that (i) the Company shall pay the reasonable fees and
expenses for one legal counsel for the Purchasers and (ii) in the event that the
Closing does not occur through no fault of the Purchasers after execution of
this Agreement, the Company shall be responsible for the reasonable and
documented out of pocket expenses of the Purchasers.

         SECTION 9.15      CONFIDENTIALITY. Each of the Purchasers, on the one
hand, and the Company, on the other hand, acknowledge and agree that any
information or data it has acquired from the other, not otherwise properly in
the public domain, was received in confidence. Each such party agrees not to
divulge, communicate or disclose, or use to the detriment of the disclosing
party or for the benefit of any other person or persons, or misuse in any way,
any confidential information of the disclosing party concerning the subject
matter hereof; PROVIDED that (i) the foregoing obligation with respect to the
disclosure and use of such information shall not apply to any information which
such party can demonstrate (A) was at the time of disclosure to such party or
thereafter, but prior to its disclosure by such party to any third party,
through no fault of such party, publicly available (other than as a result of
disclosure by such party), (B) has been disclosed to such party on a
non-confidential basis from a source other than any other party which, to such
party's knowledge, was not prohibited from disclosing such information to such
party by a legal, contractual, fiduciary or other obligation, (C) has been
independently developed by the such party without the violation of any of my
obligations under this Agreement or (D) is required to be disclosed by
applicable law (including, without limitation, the federal securities laws),
rule, regulation or regulatory body (including, without limitation, the National
Association of Insurance Commissioners) and (ii) such party may, if required by
subpoena or valid legal process, disclose any such information, but only to the
extent so required and only after using its best efforts to give the other party
or parties (as the case may be) prior notice of such required disclosure in
order to afford such party or parties an opportunity to obtain an injunction, a
protective order or other relief.

         SECTION 9.16.     COUNTERPARTS. This Agreement may be executed in one
or more counterparts, and by different parties hereto on separate counterparts,
each of which shall be deemed an original, but all of which together shall
constitute one and the same instrument.

                                       35

<PAGE>

               IN WITNESS WHEREOF, the parties hereto have executed this
Agreement or caused this Agreement to be executed by their duly authorized
representatives, as of the date first written above.

                                       SUNPHARM CORPORATION




                                       By:______________________________________
                                       Name:
                                       Title:


                 Counterpart Signature Pages Begin on Next Page

                                       36

<PAGE>



                    COUNTERPART SIGNATURE PAGE FOR PURCHASERS

               The undersigned hereby agrees to become a party to that certain
Securities Purchase Agreement dated as of November __, 1998 (the "Agreement")
among SunPharm Corporation (the "Company") and others. From and after the
undersigned's execution and delivery and the Company's acceptance of this
Counterpart Signature Page, the undersigned shall be a party to the Agreement.


                            ____________________________________________________
                            Printed Name of Purchaser

                            ____________________________________________________
                            Signature of Purchaser

                            Investment Amount:__________________________________

                            Number of shares of Series A Redeemable
                            Convertible Preferred Stock:________________________

                            Number of 1997 Warrants surrendered:

                            Number of shares of Common Stock:___________________

                            By:_________________________________________________

                            Title:______________________________________________

                            Address:____________________________________________

                            ____________________________________________________

                            ____________________________________________________

                            Date:_______________________________________________

Agreed and accepted as to
_________  shares of Series A Redeemable
           Convertible Preferred Stock
_________  shares of Common Stock

SUNPHARM CORPORATION
By:____________________
Title:_________________
Date:__________________

<PAGE>

<TABLE>
<CAPTION>
                                               SCHEDULE A

                                   Number of           Number of       Number of
                                Preferred Shares     1997 Warrants    Common Shares    Cash Portion of
                                   Purchased          Surrendered      Purchased        Purchase Price
         Purchaser                At Closing           At Closing      At Closing       Paid At Closing
         ---------                ----------           ----------      ----------       ---------------

<S>                                 <C>                 <C>              <C>               <C>     
Pensionskassen for Vaerksteds-      123,375             142,857          351,029           $493,500
    funktionaerer  i Jernet
12 Sankt Annae Plads - DK 1250 
Copenhagen K - Denmark


Apoteksassistenternes               123,375             142,857          351,029           $493,500
     Pensionskasse
Hojbro Plads 6 - DK 1200
Copenhagen K - Denmark


Gottfried Hoffman                    25,000              28,571           71,130           $100,000
Wiesenrain 5
CH6314 Unteraegeri
Switzerland

InterSouth Partners III, L.P.        25,000              28,571           71,130           $100,000
1000 Park Forth Plaza
Durham, NC  27713


Charles and Irma Dimmler              1,050               1,216            2,987             $4,200

Charles L. Dimmler, IV                  350                 405              996             $1,400

Erika I. Dimmler                        350                 405              996             $1,400

Cecilia Bryant                        1,500               1,714            4,268             $6,000


TOTAL                               300,000             346,596          853,565         $1,200,000
</TABLE>

<PAGE>

                                    EXHIBIT A

<PAGE>

                                  SCHEDULE 3.07

                               Registration Rights

Registration rights have been granted by the Company pursuant to the following
agreements:

                  Revised Form of Warrant Agreement relating to Redeemable
                  Common Stock Purchase Warrants (Exhibit 4.2 to Amendment No. 3
                  to the Company's Registration Statement on Form SB-2)
                  (Registration No. 33-85416-A).

                  Investment Agreement between the Registration and SunPharm
                  Investors, L.P., dated January 11, 1993, relating to the
                  Registrant's 9.5% Extendable Notes and Warrants (Exhibit 4.4
                  to the Company's Registration Statement on Form SB-2)
                  (Registration No. 33-85416-A).

                  Revised form of Unit Purchase Option issued to Royce
                  Investment Group, Inc. (Exhibit 4.5 to Amendment No. 3 to the
                  Company's Registration Statement on Form SB-2) (Registration
                  No. 33-85416-A).

                  Form of Bridge Warrant Certificate (Exhibit 10.10 to the
                  Company's Registration Statement on Form SB-2) (Registration
                  No. 33-85416-A).

                  Form of Subscription Agreement for Bridge Financing (Exhibit
                  10.13 to the Company's Registration Statement on Form SB-2)
                  (Registration No. 33-854160-A).

                  Second Amended and Restated Registration Rights Agreement
                  (Exhibit 10.14 to the Company's Registration Statement on Form
                  SB-2) (Registration No. 33-85416-A).

                  First Amendment to Second Amended and Restated Registration
                  Rights Agreement (Exhibit 10.16 to Amendment No. 1 to the
                  Company's Registration Statement on Form SB-2) (Registration
                  No. 33-385416-A).

                  Unit Purchase Agreement dated as of March 28, 1997 by and
                  between the Company and the Purchasers identified therein.

                                       2

<PAGE>

                                  SCHEDULE 3.22

                           Related Party Transactions


         Stefan Borg, founder of the Company was issued 467,400 shares of Common
Stock in October 1991, in connection with the initial formation of the Company.
No cash consideration was paid for such shares. Mr. Borg has also been awarded
an option to acquire an additional 46,740 shares of Common Stock at $.32 per
share, all of which are now vested based upon achievement of certain performance
milestones, and an option to acquire an additional 25,000 shares of Common Stock
at $2.80 per share, which vests over a five year period from the award date of
August 12, 1997. The Company also loaned Mr. Borg an aggregate of $35,000 during
1992 and 1993, which amount was forgiven in that Mr. Borg was engaged as
President of the Company on the due date (April 1, 1996). On March 17, 1995, the
Company loaned Mr. Borg $10,000 at 6% per annum, due April 1, 1996 and extended
thereafter at interest of 10% per annum. On March 31, 1997, the Company loaned
Mr. Borg $87,491 at 8% per annum, due March 31, 1998 and extended thereafter at
interest of 1 1/2% per month. On April 1, 1997, the Company loaned Mr. Borg
$24,500 at 8% per annum, which was repaid on July 11, 1997.

         The Company has also entered into an employee loan agreement with Paul
M. Herron, its Vice President and Chief Financial Officer in the amount of
$30,000, effective May 27, 1998, at 8% simple interest per annum. The loan is
forgiveable in installments of $10,000 on the first and second anniversary
dates, respectively, with the balance of principal and interest then due
forgiveable on the third anniversary date, provided that Mr. Herron is an
employee of the Company on the aforesaid dates.

         The Company entered into License Agreements with the University of
Florida Research Foundation, Inc. in December 1991 and October 1995. The Company
has issued the Foundation a total of 342,760 shares of Common Stock in partial
consideration for the rights granted under the License Agreements and has
ongoing royalty obligations under the License Agreements. The Company also
entered into a Sponsored Research Agreement with the Foundation under which the
Company has agreed to fund research at the University of Florida through 1999 at
an annual cost of approximately $408,450 in 1992, $625,000 per year from 1993
through 1996, and $875,000 per year thereafter.

         Dr. Janicki, a director of the Company, purchased 116,850 shares of
Common Stock of the Company in December 1991 at $.0064 per share, in connection
with his election to the board of directors and his agreement to provide
scientific consulting services to the Company during 1992. Dr. Janicki was also
issued a stock option for 10,388 shares of Common Stock in exchange for the
extension of his consulting agreement for 1993, exercisable at $.32 per share.
In August 1992, Dr. Janicki loaned the Company $150,000 for working capital. In
December 1992, Dr. Janicki purchased 2,500 shares of Series B Preferred Stock
(which were 

                                       3

<PAGE>

converted into 4,000 shares of Common Stock upon the completion of the Company's
January 1995 initial public offering) by forgiveness of $12,500 in outstanding
principal of the note for such loan and the remaining balance was repaid in
January 1993. Dr. Janicki also received an option to purchase 23,370 shares of
Common Stock of the Company at $.32 per share as consideration for loaning the
Company such funds. An additional option for the purchase of 77,900 shares of
Common Stock at $.32 per share was issued to Dr. Janicki pursuant to his
consulting agreement with the Company as a result of his efforts in assisting in
securing the Company's strategic alliance with Nippon Kayaku. The shares vest
and become exercisable proportionately based upon the total amount potentially
payable under the Nippon Kayaku agreement that has actually been received by the
Company from Nippon Kayaku or upon the expiration of ten years, if not
previously vested. At December 31, 1995, a total of 3,895 shares may be
exercised. Dr. Janicki has assigned his rights to exercise and acquire 15,580 of
the shares subject to this option to Mr. Schoellhorn (7,790 shares) and one
other person (7,790 shares) for their assistance in completing this transaction.

         Mr. Schoellhorn, a director of the Company, purchased 10,000 shares of
Series B Preferred Stock (converted into 16,000 shares of Common Stock upon
completion of the Company's initial public offering) in October 1992 when he was
elected to the Board of Directors. In connection with such election and
purchase, the Company entered into a consulting agreement with Mr. Schoellhorn
to provide financial and business advice to the Company in exchange for an
option to acquire 31,160 shares of Common Stock at a purchase price of $.32 per
share. The Company also issued Mr. Schoellhorn a stock purchase warrant to
acquire 77,900 shares of Common Stock at a price of $1.93 per share in
connection with his election to the Board of Directors in October 1992.

         In November and December 1994 and January 1995, the Company borrowed an
aggregate of $200,000 from Messrs. Rejeange, Schoellhorn, Dr. Janicki and one
other individual who is no longer a director. In consideration for such loans,
the Company issued a note in the principal amount of $100,000, together with a
warrant to purchase 10,000 shares of Common Stock at an exercise price of $7.00
per share, to Mr. Rejeange, a note in the principal amount of $15,000, together
with a warrant to purchase 1,500 shares of Common Stock at an exercise price of
$7.00 per share, to Mr. Schoellhorn, and a note in the principal amount of
$10,000 together with a warrant to purchase 1,000 shares of Common Stock at an
exercise price of $7.00 per share, to Dr. Janicki. The warrants are not
exercisable until January 20, 1997. The Company repaid such notes from the
proceeds of its initial public offering.

         In addition, in September 1993, each of the non-employee directors of
the Company (Dr. Janicki and Messrs. Schoellhorn and Schwartz) was issued an
option for 7,790 shares at an exercise price of $.32 per share, vesting over
twelve months from issuance, and Mr. Rejeange was issued an option in June 1994
to purchase 15,580 shares at $1.61 per share, vesting over twenty-four months
from issuance, is exchange for services as a Board member. Upon his appointment
as Chairman of the Board of Directors, Mr. Rejeange was granted an 

                                       4

<PAGE>

option to purchase 10,000 shares of the Company's Common Stock at a purchase
price of $7.25 per share. The option will expire in ten years and was fully
vested upon its issuance.

         See attached Summary Table of Outstanding Options and Warrants herein
incorporated.


                               SECOND AMENDMENT TO
                          CORPORATE RESEARCH AGREEMENT


         This Second Amendment to Corporate  Research  Agreement is entered into
as of this 9th day of September,  1996 by and between  SUNPHARM  CORPORATION,  a
corporation  duly organized under the laws of Delaware and currently  having its
principal office at 4651 Salisbury Road, Suite 205, Jacksonville,  Florida 32256
(thereinafter  referred to as "Sponsor") and the UNIVERSITY OF FLORIDA  RESEARCH
FOUNDATION, INC., a not-for-profit corporation duly organized and existing under
the laws of the state of Florida and having its principal  office at 223 Grinter
Hall,   University  of  Florida,   Gainesville,   Florida   32611-2037,   U.S.A.
(hereinafter referred to as "UFRFI").

                                   WITNESSETH:

         WHEREAS,  Sponsor  and UFRFI have  entered  into a  Corporate  Research
Agreement  dated April 30, 1993 to be effective  March 26, 1993,  (the "Research
Agreement"),  which  Research  Agreement  superseded  in its entirety an earlier
Corporate Research Agreement between the parties dated December 9, 1991;

         WHEREAS,  Sponsor  and  UFRFI entered  into a  First  Amendment  to the
Research  Agreement as of May 16, 1994 in order to extend the term of the period
covered by such Research  Agreement  and to make certain  other related  changes
thereto;

         WHEREAS,  the parties desire to enter into this Second Amendment to the
Research  Agreement in order to extend the term thereof,  to provide for certain
additional  payments by Sponsor to UFRFI and to revise the  Project  Description
and Project Work accordingly.

         NOW THEREFORE,  in  consideration  of the premises and mutual covenants
herein contained, the parties hereto agree as follows:

         1. In exchange  for the  execution  of the Fourth  Amendment  to Patent
License  Agreement by UFRFI and Sponsor,  dated the date hereof,  Sponsor agrees
that it will  increase  the total  direct  costs  payable to UFRFI  pursuant  to
Section 4.1 of the Research Agreement by the sum of $200,000 per year for direct
costs and $50,000 per year for  indirect  costs  during the term of the Research
Agreement,  commencing  January 1, 1997.  The total amount payable by sponsor to
UFRFI on an annual  basis  commencing  January  1, 1997  shall be  $875,000.  In
addition,  Sponsor will increase  quarterly  payments,  starting October 1, 1996
from the  current  $156,000  per quarter to  $177,000  for the fourth  quarterly
payment,  1996, and to $198,000 for the first quarterly payment,  1997. For each
quarterly payment thereafter, Sponsor shall pay the sum of $218,750.

         2. The  definition of Contract  Period  contained in Section 1.3 of the
Research  Agreement is hereby  amended by deleting the date  "December 31, 1996"
and inserting in lieu thereof the date "December 31, 1998."

<PAGE>

         3. The definitions of "Project Description" in Section 1.1 and "Project
Work" in Section 1.2 of the Research Agreement are hereby amended to include the
descriptions of the project or projects as described in Exhibit A to this Second
Amendment.

         4. The definition of "University  Inventions" in Section 1.4.2.2 of the
Research Agreement is hereby amended by deleting the phrase "present and future"
from the first line thereof.

         5. Except as amended hereby, the Research Agreement shall be and remain
in full force and effect.

         6.  This  Second  Amendment  to  Corporate  Research  Agreement  may be
executed in one or more counterparts,  each of which shall be deemed an original
and all of which shall be taken together as one instrument.

         IN WITNESS  WHEREOF,  the parties have caused this Second  Amendment to
Corporate  Research Agreement to be executed as of the date and year first above
written.



                                    SPONSOR:

                                    SunPharm Corporation


                                    By:/s/ STEFAN BORG
                                       -------------------------------
                                           Stefan Borg,President


                                    UFRFI:

                                    University of Florida 
                                    Research Foundation, Inc.


                                    By: /s/ RONALD M. KUDLA
                                        ------------------------------
                                    Name:   Ronald M. Kudla
                                    Title:  Director, OTL

READ AND ACKNOWLEDGED               Reviewed by UFRFI's Attorney:

/s/ RAYMOND J. BERGERON                /s/ GREGORY A. NELSON
- - -------------------------------        -------------------------------
    Raymond J. Bergeron                    Gregory A. Nelson
                                           
                                           Sept. 9, 1996

                                    (This attorney shall not be deemed a
                                    signatory to this Agreement.)

                                      -2-



                                THIRD AMENDMENT TO
                          CORPORATE RESEARCH AGREEMENT



         This third Amendment to Corporate Research Agreement is entered into as
of  this  2nd  day  of  April,  1998  by and  between  SUNPHARM  CORPORATION,  a
corporation  duly organized under the laws of Delaware and currently  having its
principal office at 4651 Salisbury Road, Suite 205, Jacksonville,  Florida 32256
(hereinafter  referred to as "Sponsor") and the  UNIVERSITY OF FLORIDA  RESEARCH
FOUNDATION, INC., a not-for-profit corporation duly organized and existing under
the laws of  Florida  and  having  its  principal  office at 223  Grinter  Hall,
University  of Florida,  Gainesville,  Florida  32611-2037,  U.S.A  (hereinafter
referred to as "UFRFI").

                                   WITNESSETH:

         WHEREAS,  Sponsor  and UFRFI have  entered  into a  Corporate  Research
Agreement  dated April 30, 1993 to be effective  March 26, 1993,  (the "Research
Agreement"),  which  Research  Agreement  superseded  in its entirety an earlier
Corporate Research Agreement between the parties dated December 9, 1991;

         WHEREAS,  Sponsor  and  UFRFI  entered  into a First  Amendment  to the
Research  Agreement  as of May 16, 1994 and a Second  Amendment  to the Research
Agreement on September 9, 1996 in order to extend the term of the period covered
by such Research Agreement;

         WHEREAS,  the parties desire to enter into this Third  Amendment to the
Research Agreement in order to extend the term thereof,

         NOW THEREFORE,  in  consideration  of the premises and mutual covenants
herein contained, the parties hereto agree as follows:


         1. The  definition of "Contract  Period"  contained in Section 2 of the
Second Amendment to the Research Agreement is hereby deleted in its entirety and
the following is inserted in place thereof:

                  "1.3 "Contract  Period"  will  be  December  9,  1991  through
         December31, 1998, during which time the UFRFI shall perform the Project
         Work;  which  period shall be extended on December 31 of each year on a
         thirty-six  month basis without  further  action of the parties  unless
         either  party  notified  the  other of its  desire  to  terminate  this
         Agreement on written  notice to the other given at least twelve  months
         in advance of the then-current period."

         2. Except as amended hereby, the Research Agreement shall be and remain
in full force and effect.

<PAGE>

         3. This Third Amendment to Corporate Research Agreement may be executed
in one or more  counterparts,  each of which shall be deemed an original and all
of which shall be taken together as one instrument.

         IN WITNESS  WHEREOF,  the parties  have caused this Third  Amendment to
Corporate  Research Agreement to be executed as of the date and year first above
written.



                                    SPONSOR:

                                    SunPharm Corporation


                                    By:/s/ STEFAN BORG
                                       -------------------------------
                                           Stefan Borg,Preside



                                    UFRFI:

                                    University of Florida 
                                    Research Foundation, Inc.


                                    By: /s/ T. WALSH
                                        ------------------------------
                                    Name:   Thomas E. Walsh
                                    Title:  Secretary


READ AND ACKNOWLEDGED 

/s/ RAYMOND J. BERGERON 
- - -------------------------------
    Raymond J. Bergeron 



                                  EXHIBIT 11.1

                              SunPharm Corporation
               CALCULATION OF WEIGHTED AVERAGE SHARES OUTSTANDING
                             AND NET LOSS PER SHARE

For twelve months ended December 31, 1998:
                                   Days
         Total Shares          Outstanding
         ------------          -----------
            5,737,828   x                 7      =           40,164,796
            5,745,618   x                56      =          321,754,608
            5,748,618   x                15      =           86,229,270
            5,758,901   x                13      =           74,865,713
            5,760,330   x                22      =          126,727,260
            5,767,830   x               203      =        1,170,869,490
            6,621,395   x                49      =          324,448,355
                               ------------               -------------
                                        365               2,145,059,492

  Weighted Average Shares =   2,145,059,492 / 365 =           5,876,875
  Net Loss Per Share =      $    (3,767,392)/ 5,876,875 = $       (0.64)


For twelve months ended December 31,1997:
                                  Days
         Total Shares          Outstanding
         ------------          -----------
            3,708,879   x               87       =          322,672,473
            5,537,165   x                5       =           27,685,825
            5,608,101   x               76       =          426,215,676
            5,672,471   x               44       =          249,588,724
            5,732,471   x              113       =          647,769,223
            5,735,328   x               27       =          154,853,856
            5,737,828   x               13       =           74,591,764
                               -----------                -------------
                                       365                1,903,377,541


  Weighted Average Shares =  1,903,377,541 / 365 =            5,214,733
  Net Loss Per Share =      $   (3,906,425)/ 5,040,060 = $        (0.75)


<TABLE> <S> <C>

<ARTICLE>                                 5
<CIK>                            0000884888
<NAME>                 SunPharm Corporation
<MULTIPLIER>                              1
<CURRENCY>                               USD
       
<S>                             <C>
<PERIOD-TYPE>                        12-MOS
<FISCAL-YEAR-END>               DEC-31-1998
<PERIOD-START>                  JAN-01-1998
<PERIOD-END>                    DEC-31-1998
<EXCHANGE-RATE>                                            1
<CASH>                                                     0
<SECURITIES>                                       1,699,200
<RECEIVABLES>                                        124,865
<ALLOWANCES>                                               0
<INVENTORY>                                                0
<CURRENT-ASSETS>                                   1,861,934
<PP&E>                                                75,018
<DEPRECIATION>                                        17,085
<TOTAL-ASSETS>                                     2,054,007
<CURRENT-LIABILITIES>                                451,913
<BONDS>                                                    0
                                      0
                                              300
<COMMON>                                                 662
<OTHER-SE>                                        20,871,578
<TOTAL-LIABILITY-AND-EQUITY>                       2,054,007
<SALES>                                                    0
<TOTAL-REVENUES>                                     393,855
<CGS>                                                      0
<TOTAL-COSTS>                                              0
<OTHER-EXPENSES>                                   4,161,247
<LOSS-PROVISION>                                           0
<INTEREST-EXPENSE>                                         0
<INCOME-PRETAX>                                   (3,767,392)
<INCOME-TAX>                                               0
<INCOME-CONTINUING>                               (3,767,392)
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<EXTRAORDINARY>                                            0
<CHANGES>                                                  0
<NET-INCOME>                                      (3,767,392)
<EPS-PRIMARY>                                          (0.64)
<EPS-DILUTED>                                              0
        

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