BOSTON LIFE SCIENCES INC /DE
10-K405/A, 1999-03-19
PHARMACEUTICAL PREPARATIONS
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                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                              --------------------
                                            
                                   FORM 10-K/A      
                                        
[X] ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT
    OF 1934 FOR THE FISCAL YEAR ENDED DECEMBER 31, 1998

                                       OR

[_] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE
    ACT OF 1934 FOR THE TRANSITION PERIOD

                         Commission file number 0-6533

                           BOSTON LIFE SCIENCES, INC.
             (Exact name of registrant as specified in its charter)

                   DELAWARE                      87-0277826
        (State or other jurisdiction of      (I.R.S. Employer
         Incorporation or Organization)      Identification no.)

          31 NEWBURY STREET, SUITE 300          
             BOSTON, MASSACHUSETTS                  02116    
    (Address of principal executive offices)      (Zip Code) 

       Registrant's telephone number, including area code: (617) 425-0200

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

          Securities registered pursuant to Section 12(g) of the Act:

                     COMMON STOCK, PAR VALUE $.01 PER SHARE
          WARRANTS TO PURCHASE COMMON STOCK, PAR VALUE $.01 PER SHARE
                    SERIES A PREFERRED STOCK PURCHASE RIGHTS
                                (Title of Class)

  Indicate by check mark whether the registrant (1) has filed all reports
required to be filed by Section 13 or 15(d) of the Securities Exchange Act of
1934 during the preceding 12 months (or for such shorter period that the
registrant was required to file such reports), and (2) has been subject to such
filing requirements for the past 90 days. Yes [X] No [_]
    
  Indicate by check mark if disclosure of delinquent filers pursuant to Item 405
of Regulation S-K (((S)) 229.405 of this chapter) is not contained herein, and
will not be contained, to the best of registrant's knowledge, in definitive
proxy or information statements incorporated by reference in Part III of this
Form 10-K/A or any amendment to this Form 10-K/A. [_]     
    
  Based on the last sales price of the Registrant's Common Stock as reported on
the Nasdaq Small Cap Market on March 9, 1999, the aggregate market value of the
13,918,934 outstanding shares of voting stock held by nonaffiliates of the
Registrant was $98,267,674.     
    
  As of March 12, 1999, there were 14,103,005 shares of the Registrant's Common
Stock issued and outstanding.     
    
  DOCUMENTS INCORPORATED BY REFERENCE:  Portions of the following document are
incorporated by reference in this report on Form 10-K/A:  The Company's
Definitive Proxy Statement for the Company's 1999 Annual Meeting of Stockholders
(Part III).    
<PAGE>
 
                                     PART I

Item 1. Business.

FORWARD-LOOKING STATEMENTS
    
  The description of the business of Boston Life Sciences, Inc. ("BLSI" or the
"Company" or "We") that follows contains certain forward-looking statements on
the prospects for our pharmaceutical development activities and results of
operations based on our current expectations, including, but not limited to
statements regarding certain milestones with respect to the Company's
technologies and product candidates. Statements that are not historical facts,
including statements about the Company's beliefs and expectations, are forward-
looking statements. Forward-looking statements can be identified by, among other
things, the use of forward-looking language, such as "believe," "expects,"
"may," "will", "should," "seeks," "plans," "scheduled to," "anticipates" or
"intends" or the negative of those terms, or other variations of those terms or
comparable language, or by discussions of strategy or intentions. Forward-
looking statements speak only as of the date they are made and the Company
undertakes no obligation to update them. For a description of meaningful factors
which could cause future results to differ significantly from our current
expectations, see "Business - Products under FDA Review", "Business - Products
in Clinical Trials", "Business - Principal Preclinical Development Programs",
"Business - Other Information", "Business-Business Risks", and "Business-Market
Risks" in Part I of this Annual Report and "Management's Discussion and Analysis
of Financial Condition and Results of Operations" in Part II of this Annual
Report on Form 10-K/A for the fiscal year ended December 31, 1998.     

OVERVIEW

  We are a development stage biotechnology company engaged in the research and
development of novel therapeutic and diagnostic products to treat chronic
debilitating diseases such as cancer, central nervous system (CNS) disorders and
autoimmune diseases. The Company was incorporated in Delaware in 1972 under the
name Greenwich Pharmaceuticals Incorporated ("Greenwich"). Effective June 15,
1995, Greenwich merged with a privately-held company named Boston Life Sciences,
Inc. (the "Merger"). Greenwich survived the Merger and changed its name to
Boston Life Sciences, Inc.  On June 6, 1997 the Company's stockholders approved
a one-for-ten reverse split of the common stock effective as of June 9, 1997.
Our principal executive offices are located at 31 Newbury Street, Suite 300,
Boston, Massachusetts, and the telephone number is (617) 425-0200.

  In general, our corporate strategy is to seek to (i) fund the early
development of our compounds in preclinical development and (ii) enter into
corporate partnering arrangements with established pharmaceutical or
biotechnology companies to support the continued development of our compounds
and the marketing of any products as and to the extent they receive government
approval. Additionally, since We do not currently own any laboratory or
manufacturing facilities, We contract for such services and intend to continue
to do so.

  The Company currently has eight technologies in its product portfolio.
Therafectin, a potential treatment for rheumatoid arthritis, was acquired as a
result of the Merger. The balance of our technologies currently under
development were invented or discovered by researchers working at Harvard
University and its affiliated hospitals ("Harvard and its Affiliates") and have
been licensed to us.

PRODUCTS UNDER FDA REVIEW

  1. Therafectin(R)

  Therafectin is a synthetic molecule developed for the treatment of Rheumatoid
Arthritis which affects approximately 2.5 million individuals in the U.S. It is
estimated that the total U.S. market for Rheumatoid Arthritis drug sales is
approximately $2.5 billion per year.  Therafectin has undergone extensive
preclinical and clinical testing in which the molecule has been demonstrated to
be safe and well-tolerated. A New Drug Application ("NDA") was initially filed
with the Food and Drug Administration ("FDA") in 1993 by Greenwich.

  The Company's (BLSI) 20 week, double-blind, placebo-controlled Phase III trial
included approximately 220 patients, and was conducted at 25 centers across the 
United States. The trial was designed to closely resemble Greenwich's 200 
patient Phase III RA-9 trial which demonstrated that Therafectin was more 
effective than placebo and reached positive statistical significance. The BLSI 
trial was completed in August 1997, and on September 30, 1997, the Company 
announced preliminary results which were based on primary efficacy called 
"Therapeutic Success."

  In the preliminary analysis of results, Therafectin fell short of statistical
significance although 40% of patients receiving Therafactin and 33% of patients
receiving placebo achieved "Therapeutic Success". However, in centers that
enrolled at least ten patients (about half of the patient population), 48% of
Therafactin patients achieved "Therapeutic Success" as compared to 29% of
placebo patients. Further, among the pre-defined secondary efficacy variables,
the improvement in the number of swollen joints in patients receiving
Therafectin was highly statistically significantly better than in those patients
receiving placebo (p is less than 0.007). Further, in a group of patients with
higher levels of swollen joints (approximately half of those completing the
trial), there was a statistically significant difference between Therafectin and
placebo in achieving success as measured by the primary efficiency variable
(Therapeutic Success). Additionally, utilizing the most recent MIRA
("Minocycline in Rheumatoid Arthritis") criteria for meaningful improvement",
defined as at least a 50% improvement in joint swelling compared to baseline,
Therafectin showed a statistically significant improvement compared to placebo.
Consistent with the previously established excellent safety profile of
Therafectin, there were no significant adverse events attributable to
Therafectin during the course of the study. In view of the excellent safety
profile of Therafectin, and the previous statistically significant successful
trial combined with at least three supportive trials (previously completed by
Greenwich), the Company convened an advisory panel of clinical rheumatologists
to seek input and advice regarding whether to proceed with the submission of an
amendment to the pending NDA seeking approval for the drug.

  In January 1998, We announced our plans to seek marketing approval for
Therafectin based upon the cumulative data obtained from the trial and the input
provided by our special outside advisory panel of clinical rheumatologists. The

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overall opinion of the advisory panel was that the cumulative safety and
efficacy data on Therafectin justified its use by clinicians looking for a safe
alternative to other more toxic drugs now being used to treat Rheumatoid
Arthritis. The Company also reported that analysis of the trial data strongly
suggested the therapeutic efficacy of Therafectin. Applying the widely-accepted
"Paulus" criteria of therapeutic efficacy (at least a 20% improvement in 4 of 6
measures: joint tenderness scores, joint swelling scores, physician's and
patient's global assessment, erythrocyte sedimentation rate (ESR), and morning
stiffness), there was a highly statistically significant difference in the
percentage of Therafectin patients meeting the Paulus criteria for therapeutic
efficacy as compared to the percentage of placebo patients meeting the Paulus
criteria (p greater than 0.02). Among the predefined secondary efficacy
variables, the reduction in the number of swollen joints, the ESR results,
Functional Class scores, and the CLINHAQ (a quality of life measurement) were
statistically significant in favor of Therafectin. In addition, after
withdrawing non-steroidal medication, clinical secondary variables returned to
baseline or better in the Therafectin group, while remaining statistically
significantly worse than baseline in the placebo group. Applying the American
College of Rheumatology (ACR) "50% improvement" criteria to the number of
swollen joints, 36% of Therafectin patients experienced at least a 50% decrease
in the number of swollen joints compared to 23% of placebo patients resulting in
a statistically significant difference (p greater than 0.04). Finally, in the
subgroup of patients (about half the total number) entering the study with
greater than the median number of swollen joints (ten), the primary and
secondary variables specified in the trial protocol were statistically
significant. The Company believes that statistically significant improvement in
the important clinical variables related to joint swelling, functional class,
and "quality of life" experienced by the Therafectin patients demonstrates the
clinical efficacy of Therafectin. Because the beneficial effect is most obvious
on joint swelling, the Company believes that the other improvements are
secondary to Therafectin's apparent ability to favorably impact the underlying
disease.

  In 1998, the Company concluded agreements for drug substance and tablet
manufacturing with FDA compliant Good Manufacturing Practices ("GMP")
manufacturers (replacing its previous relationship with Boehringer which was
adversely impacted by the closing of the latter's Connecticut facility, which
had been expected to produce Therafectin launch supplies). Commercial quantities
of drug substance have been manufactured and transferred to the tablet
manufacturer, and commercial quantities of finished tablets were manufactured
during the first quarter of 1999. Manufacturing data reflecting this production
are expected to be submitted to the FDA during the first half of 1999, however
there can be no assurance that the Company will meet such expectations. The
Company filed an amendment to the NDA for Therafectin in 1998, and intends to
make a follow-up request for a meeting with the FDA's Arthritis Advisory
Committee along with submission of the manufacturing data. However, there can be
no assurance that a decision will be rendered or that Therafectin will
ultimately be approved. The Company's strategy is to enter into a marketing
agreement with a well established pharmaceutical company, but there can be no
assurance that the Company will be able to successfully manufacture, market, and
distribute Therafectin, or to enter into a licensing and strategic alliance on
acceptable terms.

PRODUCTS IN CLINICAL TRIALS

  1. Altropane(TM)

  Parkinson's Disease is a chronic, irreversible, neurodegenerative disease
which generally affects people over 50 years old. It is caused by a significant
decrease in the number of dopamine terminals in specific areas of the brain.
Inadequate production of dopamine causes the classic PD symptoms of resting
tremor, muscle retardation, and rigidity.  Altropane is an 123I-based nuclear
medicine imaging agent that We believe may be useful in the diagnosis of PD in
its early stages. Since administration of currently available therapies at an
early stage of PD may delay the progression of the disease, early definitive
diagnosis may be of substantial benefit. PD afflicts about 250,000-500,000
Americans and about 4 million individuals worldwide (developed nations). The
number of individuals having PD is expected to grow substantially as people
continue to live longer and the overall population ages.

     We filed an IND application in November 1996 asking for permission to
conduct full scale clinical trials of Altropane. We started our Phase I clinical
trial in the second quarter of 1997 and completed the Phase I trial in February
1998.  We started our Phase II studies in April 1998 and completed the Phase II
trial in February 1999.  We believe that results of the Phase II study provide
clear evidence that Altropane is useful in telling the difference between normal
individuals from those individuals with early PD. The interim results thus far
analyzed, based upon half the total number of enrolled patients in the Phase II
trial indicate that patients with early or mild PD can be reliably and easily
differentiated from normal patients based on the Altropane scan results.  Normal
patients had a mean striatal binding potential of 1.07 + 0.17 vs 0.44 + 0.19 for
                                                       -              -         
patients with early/mild PD (p greater than 0.00007). The highest binding
potential for a PD patient (0.66) was still well below the lowest binding
potential seen in the normal patients (0.9). Qualitative assessment of the scans
revealed moderate to marked decrease in at least one quadrant of the striatum in
the brain of PD patients compared to the normal patients. The Company plans to
initiate its Phase III study in March of 1999, although there can be no
assurances that this timetable will be met. Our 1997 Annual Report indicated
that we had expected to complete our Phase III trial by the end of 1998 although
we noted that there were no assurances that this timing would be met. Due to the
functional impairment associated with PD, and the resulting physical inability
of many patients to complete their clinical visits when scheduled, the
completion of Phase II enrollment took longer than originally expected. We are
implementing measures to assist Phase III patients in completing their clinical
visits as originally scheduled. While we believe that these and other supportive
measures will have a beneficial effect, the completion of Phase III by the end
of 1999 should be regarded as a goal rather than as well-assured.

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  In December 1998, the Company announced that it had started preclinical
development on a "second generation" technetium-based compound for the diagnosis
of PD.  This compound differs from Altropane in structure and in the
advantageous substitution of technetium for iodine as the radio-ligand.
Subsequent research has shown that this agent can differentiate PD from normal,
but comprehensive data on its performance as compared to Altropane is not yet
available.  Human clinical trials with this new agent, which the Company hopes
to commence in 2000, although there can be no assurance that the Company will
meet such expectations, will establish the ultimate clinical usefulness for this
technetium-based compound.  The Company believes that the ability to eventually
follow Altropane to market with a second-generation technetium product would
give BLSI a long-term competitive advantage in this rapidly emerging diagnostic
area.

PRINCIPAL PRECLINICAL DEVELOPMENT PROGRAMS

  1. Troponin

  It is now generally accepted that angiogenesis (the formation of new blood
vessels) plays an important role in the growth and spread of cancer throughout
the body.  Increasing experimental and clinical evidence strongly suggests that
the inhibition of angiogenesis could potentially offer a general therapeutic
approach to the prevention or treatment of all solid tumor metastases.  This
approach is independent of tumor type, since it targets only proliferating blood
vessel cells, and if the anti-angiogenic agent is specific to endothelial (blood
vessel) cells, it is also theoretically nontoxic since angiogenesis does not
take place under normal circumstances.

  Our anti-angiogenic agent, Troponin I was discovered to be present in
cartilage (a tissue devoid of blood vessels) by scientists at Children's
Hospital in Boston, and found to have extremely strong anti-angiogenic activity,
both in vitro and in vivo. Recombinant Troponin I has been shown to inhibit lung
metastases in animals at doses that by extrapolation to the human equivalent
appears to yield a convenient clinical dosing regimen. The Company's goal is,
therefore, to complete its clinical formulation effort enabling the subcutaneous
administration of Troponin in human trials. The scientific basis for the
Company's development of Troponin was published in the March 16, 1999 edition of
the Proceedings of the National Academy of Sciences, and summarized in a Company
Press Release of the same date. The Company's goal is to file an IND and
initiate human clinical trials of Troponin in the second half of 1999, but there
can be no assurance that the Company will be able to meet such expectations, or
that it will be able to successfully manufacture, market and distribute
Troponin. In our 1997 Annual Report, we had indicated that our objective was to
file an IND for Troponin around the end of 1998. More extensive pre-clinical
development work than originally planned was necessary in order to (1) further
define desirable parameters for the manufacturing process prior to initiating
the required toxicology, teratogenicity, and wound healing studies for
regulatory compliance, and (2) generate additional information on dosing for use
in establishing clinical protocols.

  In addition to the treatment of cancer, the anti-angiogenic approach appears
to have significant potential for the treatment of eye diseases that are
associated with abnormal retinal angiogenesis.  Two of these diseases, Macular
Degeneration and Diabetic Retinopathy, are the major causes of blindness in
developed countries.  Preliminary experiments in animal models of these diseases
suggest that Troponin can effectively inhibit retinal angiogenesis.  The Company
is, therefore, developing Troponin for these indications, and hopes to file an
IND for ophthalmic indications in the year 2000, although there can be no
assurance that the Company will meet such expectations.

  BLSI owns the exclusive license to the recently issued (November 1998) U.S.
patent for the use of Troponin I to treat a broad spectrum of angiogenic
diseases including solid tumors, eye diseases, atherosclerosis, hypertrophic
scarring (including in the spinal cord), arthritis and psoriasis.

  2. Axogenesis Factor 1 (AF-1)

  Axogenesis Factor 1 (AF-1) is a nerve growth factor which specifically
promotes axon outgrowth in central nervous system (CNS) cells. Since axons form
the connections between cells of the CNS (brain and spinal cord), We believe
that AF-1 could provide a means to regenerate those connections following CNS
damage suffered in stroke or spinal cord injury.  In addition, chronic
degenerative diseases of the CNS such as Parkinson's Disease or Alzheimer's
Disease, may be amenable to AF-1 or similar treatment.

  Results obtained by BLSI scientists in animals appear to demonstrate the
feasibility of regenerating the injured optic nerve and spinal cord by treating
these tissues with AF-1 or related compounds.  Further experiments are presently
being conducted to expand upon these results, with the aim of achieving
substantial functional recovery after such injuries.  If these ongoing studies
are successful, the Company will proceed toward human clinical studies.

  Some of the important new findings concerning the regulation of axon growth in
CNS nerve cells that were generated by BLSI researchers were announced in 1998.
The discoveries were presented at the annual meeting of the Society for
Neuroscience and were published in The Journal of Biological Chemistry.  The
paper describes the intracellular pathway that may control axon growth in all
nerve cells.

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     The annual incidence of stroke in the U.S. is approximately 500,000 with
more than 3,000,000 stroke survivors currently alive. The incidence of traumatic
brain injury is approximately 50,000 annually. The incidence of spinal cord
injury is approximately 10,000 cases annually. Treatment for these conditions is
presently limited to hemodynamic support, steroids to reduce inflammation, and,
in the case of stroke, the correction of predisposing hematological
abnormalities.

  3. C-MAF

  In June 1996, the Company acquired the rights to a transcription factor called
C-MAF which has been shown, in preclinical in vitro tests, to regulate the
switching of T helper 1 (Th1) cells into T helper 2 (Th2) cells. The Company
believes that the ability to switch Th1 cells into Th2 cells (and vice versa)
may be significant in the treatment of autoimmune diseases and allergies.

  The discovery of and potential role for this factor was the subject of a lead
article in the June 28, 1996 edition of Cell. When C-MAF was inserted into Th1
cells, they transformed themselves into Th2 cells. The Company's collaborating
scientists have since accomplished the stable transfection of a large proportion
of T cells in culture, which is the first step in creating a gene therapy
product for clinical use. In a "Proof of Principle" experiment, C-MAF was
inserted into a fertilized mouse egg. The T cells of the fully developed animal
all appeared to be of the Th2 subtype, thereby providing evidence that one can
transform an animal's T cells in vivo. Animal experiments are currently underway
in an attempt to demonstrate that autoimmune disease might be successfully
treated using this approach.  In addition, the Company's scientists believe that
they have identified the C-MAF promoter, which could represent an ideal target
for the development for small molecule inhibition of the allergic/autoimmune
response.  A product based upon a successful program in this area would
potentially address a large cross-section of autoimmune and allergic diseases.

  In addition to C-MAF, a second factor, called NIP-45, has been discovered
which appears to synergize with C-MAF and other factors to significantly boost
transcription of the IL4 gene in Th2 cells. Thus, a gene therapy strategy
focused on either inserting C-MAF alone, or C-MAF together with NIP-45, could
potentially lead to the development of therapeutic product for the treatment of
severe autoimmune diseases, although results to date are preliminary.

  The approach to the treatment for allergies requires the development of an
inhibitor to C-MAF, NIP-45, or both, in order to decrease the number of Th2
cells and to restore the proper balance between the numbers of Th1 and Th2 cells
at the site of inflammation. In the case of asthma and hay fever, the optimal
formulation would be a small molecule that could be delivered via aerosol to the
lung where it would be incorporated into the Th2 cells surrounding the bronchi.
The Company's strategy for the commercialization of this technology is to
collaborate with a corporate partner in the discovery and clinical development
of such a small molecule inhibitor utilizing the basic research and screening
techniques developed by the BLSI research program.

OTHER INFORMATION

 SCIENTIFIC ADVISORY BOARD

  We have organized a Scientific Advisory Board, which currently consists of six
members (the "Scientific Advisors"). The Scientific Advisors have extensive
experience in fields related to our fields of research. The Scientific Advisors
may be asked to review and evaluate our research programs, to provide advice on
technical matters in fields in which they have experience, and to recommend
personnel to us.

  The Scientific Advisors are employed by or have consulting agreements with
other organizations, some of which may or may not conflict or compete with us,
and the Scientific Advisors are expected to spend only a minor portion of their
time working for us. Except for members of the Scientific Advisory Board who are
also consultants to the Company or its subsidiaries, the Scientific Advisors are
not expected to participate actively in our activities or in the development of
our technologies. Some of the organizations that the Scientific Advisors are
affiliated with may have regulations or policies which limit their ability to
act as consultants to us. Any new regulations or policies adopted in the future
might limit the ability of the Scientific Advisors to consult with the Company.

  Inventions or processes discovered by the Scientific Advisors do not become
our property but remain the property of an Advisors' full-time employer, other
than those inventions or processes that may be covered by consulting agreements
between us and such advisors. In addition, the institutions with which the
Scientific Advisors are affiliated may make available the research services of
their scientific and other skilled personnel, including the Scientific Advisors,
to organizations other than us under sponsored research agreements with others.
Under such agreements, such organizations 

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may be obligated to assign or license patents and other proprietary information
which may result from research sponsored by an entity other than us, including
research performed by a Scientific Advisor for a competitor of the Company.

  The members of the Scientific Advisory Board and a composite of their
professional background and affiliations is as follows:

  HENRY BREM, M.D. Dr. Brem is Professor of Neurosurgery, Ophthalmology, and
Oncology at Johns Hopkins University, and Director of Neurosurgical Oncology at
Johns Hopkins Hospital.

  JOSEPH P. VACANTI, M.D. Dr. Vacanti is Associate Professor of Surgery, Harvard
Medical School, and Director of the Laboratory for Transplantation and Tissue
Engineering at the Children's Hospital, Boston.

  ALEXANDER M. KLIBANOV, PH.D. Dr. Klibanov is Professor of Chemistry at
Massachusetts Institute of Technology.

  MICHAEL A. MOSKOWITZ, M.D. Dr. Moskowitz is Professor of Neurology, Harvard
Medical School, and Associate Neurologist at Massachusetts General Hospital.
 
  VLADIMIR TORCHILIN, PH.D. Dr. Torchilin is the Head of the Chemistry Program
at the Center for Imaging and Pharmaceutical Research, and Associate Professor
of Radiology at the Harvard Medical School.

 LICENSING AGREEMENTS

We have entered into a number of exclusive worldwide licenses of patent
applications covering our technologies. These licenses are obtained from the
collaborating institutions where such technologies were invented or discovered
(generally Harvard and its Affiliates), and generally include the right to
sublicense, to make, use or sell, products or processes resulting from the
development of these technologies. The licensing agreements generally require
the payment of an initial licensing fee as well as additional payments upon
reaching development milestones, as defined in each respective agreement. The
licensing agreements also provide for the payment of a royalty to the
collaborating institution based upon the sales of any products developed by us
or our sublicensees. We usually have a first option to license additional
technologies invented or discovered during the course of related research
programs funded by us. There can be no assurance that such research will lead to
the discovery of new technologies or that We will be able to obtain a license
for any newly discovered technologies on acceptable terms, if at all.

BUSINESS RISKS

  THE COMPANY IS UNCERTAIN REGARDING THE PATENTS AND PROPRIETARY RIGHTS OF ITS
PRODUCT CANDIDATES

  Our patent strategy has been to aggressively pursue patent protection, in the
U.S. and in most developed countries, for our compounds and technologies. Our
goal is to obtain broad patent protection for our compounds under development
and their related medical indications.  Although We will seek patent protection
for our technologies, the patent application and issuance process generally
takes several years and is usually very expensive without any guarantee that a
patent will be issued. In many cases, the Company's know-how and technology may
not be patentable.  If We do not obtain patent protection for our technologies,
our ability to compete and business prospects may be significantly and
negatively affected.  Further, even if patents can be obtained, there can be no
guarantee that these patents will provide us with any competitive advantage.
Risks associated with protecting our patent and proprietary rights include the
following:

 .  Our ability to protect our technologies could be delayed or negatively
   affected if the United States Patent and Trademark Office (the "USPTO")
   requires clinical evidence that our technologies work.

 .  Our competitors may develop similar technologies or products, or duplicate
   any technology developed by us.

 .  If patents are issued to us, our competitors may develop products which are
   similar to ours but which do not infringe on our patents or products, or a
   third party may successfully challenge one or more of our patents.

 .  Our patents may infringe on the patents or rights of other parties which may
   decide not to grant a license to us.

 .  We may have to change our products or processes, pay licensing fees or stop
   certain activities because of the patent rights of third parties which could
   cause additional unexpected costs and delays.

  Patent law in the fields of healthcare and biotechnology is still evolving. As
a result, future changes in patent laws might conflict with the existing or
future patent rights of others.  For the same reasons, the products of others
could infringe on our patent rights.  The defense and prosecution of patent
claims is both expensive and time-consuming, even if We receive a favorable
outcome.  If any existing or future patent owned by or licensed to us or our
collaborators fails to protect us against competitors, it could:

 .  Subject us to significant liabilities to third parties,

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<PAGE>
 
 .  Require us to license rights from third parties,
 .  Require us to alter our products or processes or
 .  Require us to cease developing and/or selling certain of our technologies.

  We also rely on trade secrets and proprietary know-how. We seek to protect
this information primarily through confidentiality agreements with our
collaborators, employees and consultants.  There can be no guarantee that these
agreements will not be breached or that We will have adequate remedies for such
breach.  In addition, our trade secrets may become known or be developed
independently by competitors.

  If consultants, key employees or other third parties apply technological
information which they have developed separate from the Company to our
technologies, there may be disputes as to the ownership of such information
which may not be resolved in our favor. Our scientific advisors and other
consultants are employed by and may have consulting agreements with third
parties.  Therefore, any inventions discovered by such individuals are not
likely to become our property.

 THE COMPANY HAS ALWAYS HAD LOSSES FROM ITS OPERATIONS AND EXPECTS FUTURE LOSSES

   We are a development stage company. We have never generated revenues from
product sales, and We do not currently expect to generate revenues from product
sales for at least the next eighteen months.  As of December 31, 1998, We have
incurred total net losses since inception of approximately $40 million.  To
date, We have dedicated most of our financial resources to the research and
development of our product candidates, preclinical compounds, and other
technologies (collectively referred to herein as our "technologies"), general
and administrative expenses and costs related to obtaining and protecting
patents. We expect to incur significant operating losses for at least the next
twenty-four months, and possibly longer, primarily due to the continued progress
of our research and development programs, including preclinical studies and
clinical trials, and costs associated with making and selling our products. Our
ability to earn profits will depend on many things including:

 .    Successfully completing the research and development of our technologies;
 .    The time, cost and effort required to obtain regulatory approvals;
 .    Establishing collaborative arrangements for manufacturing, sales and
     marketing capabilities;
 .    Protecting our patent and other intellectual rights;
 .    The ability of our licensors or collaborators to protect their patent and
     other intellectual rights;
 .    Competing technology and market developments;
 .    Manufacturing costs and the costs of commercializing our products; and
 .    Raising enough money to finance our business.

     There can be no guarantee that the Company will become profitable or that
if it becomes profitable, it will remain profitable.

 THE COMPANY DEPENDS HEAVILY ON HARVARD UNIVERSITY AND ITS AFFILIATES

     Most of our research and development is completed through Harvard
University and its affiliated hospitals ("Harvard and its Affiliates") under
sponsored research agreements.  Researchers working at Harvard and its
Affiliates invented or discovered virtually all of our current technologies.
Therefore, most of the Company's business depends upon:

 .    Harvard and its Affiliates continuing to perform research and development
     work under sponsored research agreements with us; and
 .    Our ability to maintain the licenses that We received from Harvard and its
     affiliates for our current technologies.

  THERE CAN BE NO GUARANTEE THAT HARVARD AND ITS AFFILIATES WILL CONTINUE TO
WORK WITH US.

  Each of our collaborative research agreements is managed by a sponsoring
scientist and/or researcher who has his or her own independent affiliation with
Harvard and its Affiliates. In addition, We may enter into consulting, advisory,
and related arrangements with other scientific, research and development
professionals whom We believe can assist us in the development of our
technologies. A summary of the principal scientific, research and development
professionals associated with the Company, and a composite of their professional
background and affiliations is as follows:

                                       6
<PAGE>
 
  LARRY I. BENOWITZ, PH.D., Director, Laboratories for Neuroscience Research in
Neurosurgery, Children's Hospital, Boston; Associate Professor of Neuroscience,
Department of Surgery, Harvard Medical School

  ALAN J. FISCHMAN, M.D., PH.D., Chief, Department of Nuclear Medicine,
Massachusetts General Hospital; Professor of Radiology, Harvard Medical School

  LAURIE H. GLIMCHER, M.D., Irene Heinz Given Professor of Immunology, Harvard
School of Public Health; Professor of Medicine, Harvard Medical School

  ALEXANDER M. KLIBANOV, PH.D., Professor of Chemistry, Massachusetts Institute
of Technology

  ROBERT S. LANGER, SC.D. Germeshausen Professor of Chemical and Biomedical
Engineering, Massachusetts Institute of Technology

  BERTHA K. MADRAS, PH.D., Associate Professor of Psychobiology, Harvard Medical
School

  PETER MELTZER, PH.D., President, Organix, Inc., Woburn, MA

  VLADIMIR TORCHILIN, PH.D., Head of the Chemistry Program, Center for Imaging
and Pharmaceutical Research and Associate Professor of Radiology, Harvard
Medical School

  THE COMPANY WILL NEED TO RELY ON FUTURE AND CERTAIN PRIOR RELATIONSHIPS IN
ORDER TO BE SUCCESSFUL

  We expect that developing, clinical testing, manufacturing and commercializing
our technologies will require working with various corporate partners, joint
venturers, licensors, sub-licensees and others.  There can be no guarantee that:

 .    We will be able to enter into such collaborations on acceptable terms and
     conditions,
 .    That such collaborations will be successful or,
 .    The parties will not dispute the ownership rights to any technology
     developed under such collaborations.

  If any of our collaborators breach or terminate their agreement with us or
otherwise fail to conduct their activities on time, it could delay the
development or commercialization of the technology for which the parties are
collaborating.  Further, We may need to undertake additional responsibilities or
to devote additional resources.  The termination or cancellation of any working
arrangements could also negatively affect our patent and intellectual property
rights, as well as our financial condition and operations.

  If We are not able to establish or maintain collaborative arrangements, We
will need more money to research and develop technologies on our own and may
encounter delays in introducing our products. We may also find that not
collaborating with others may negatively affect our development and
manufacturing efforts, as well as the sales of any products. We also expect to
rely on third parties to manufacture our products. There can be no assurance
that We will be able to contract with manufacturers who can fulfill our
requirements for quality, quantity and timeliness, or that We would be able to
find substitute manufacturers, if necessary. If We are unable to contract with
manufacturers on acceptable terms, it could negatively affect our ability to
conduct preclinical and clinical testing and may delay our efforts to obtain
regulatory approvals. In addition, manufacturing of our products on a commercial
scale will require us to incur significant start-up expenses and to expand our
facilities and personnel. No guarantee can be given that We can develop such
manufacturing capability or hire and train qualified personnel.

 THE COMPANY DEPENDS HEAVILY ON ITS KEY PERSONNEL AND MAY NEED ADDITIONAL KEY
PERSONNEL

  Our success depends significantly upon our ability to attract and retain
highly qualified scientific and management personnel. There is significant
competition for such personnel from other companies, research and academic
institutions, government entities and other organizations. We can not guarantee
that We will be successful in hiring or retaining key personnel.

  If We decide to undertake internally the research and development of any of
our technologies, We may need to hire additional key management and scientific
personnel to assist the limited number of employees that We currently employ.
If We fail to attract such personnel, it could have a significant negative
effect on our ability to develop our technologies. There is significant
competition for such personnel from other companies, research and academic
institutions, government 

                                       7
<PAGE>
 
entities and other organizations. There can be no guarantee that We will be
successful in hiring or retaining the personnel required for such activities.

 THE COMPANY'S INDUSTRY IS VERY COMPETITIVE AND SUBJECT TO CHANGES IN TECHNOLOGY

  The pharmaceutical industry is highly competitive.  Research on the causes of,
and possible treatments for diseases for which We are trying to develop
products, including rheumatoid arthritis, cancer, Parkinson's Disease, central
nervous system disorders and autoimmune diseases are developing rapidly.
Competition from larger, more experienced and better capitalized companies will
be intense. We are pursuing areas of product development in which there is a
potential for extensive technological innovation in relatively short periods of
time.  There can be no assurance that We will be able to keep pace with any new
technological developments.  Factors affecting our ability to successfully
manage the technological changes occurring in the biotechnology industry as well
as our ability to successfully compete include:

 .    We have no sales force or marketing experience;
 .    We compete with a number of pharmaceutical and biotechnology companies
     which have financial, technical and marketing resources significantly
     greater than ours;
 .    Companies with established positions in the pharmaceutical industry may be
     better able to develop and market products for the treatment of those
     diseases for which We are trying to develop products;
 .    Many of our competitors have significantly greater experience than us in
     completing preclinical and clinical testing of new pharmaceutical products
     and obtaining Food and Drug Administration ("FDA") and other regulatory
     approvals of products;
 .    Our competitors may succeed in developing products that are more effective
     than ours;
 .    Rapid technological change or developments by others may result in our
     potential products becoming obsolete or uncompetitive; and
 .    Universities and other not-for-profit research organizations are
     responsible for a significant amount of research in the field. These
     institutions are becoming increasingly aware of the commercial value of
     their findings and are becoming more active in seeking patent protection
     and licensing arrangements to collect royalties for the use of technology
     that they have developed. These institutions may also market competitive
     products on their own or through joint ventures and may compete with us in
     recruiting qualified personnel.

  A substantial number of patents have been issued to other pharmaceutical and
biotechnology companies, and other companies may have applied for patents, been
issued patents or obtained additional patents and proprietary rights relating to
products or processes competitive with ours.  Patent applications in the United
States are kept secret until the patents are issued, and since publication of
discoveries in the scientific or patent literature occurs after the actual
discoveries, We cannot be certain that We, or our licensors or collaborators,
were the first creator of inventions covered by pending patent applications or
the first to file patent applications for such inventions.  Consequently, there
can be no assurance that our existing patents or any patents that may be issued
to us or our licensors or collaborators in the future will provide protection
against competitive products or otherwise be commercially valuable.

 IT MAY BE DIFFICULT FOR THE COMPANY TO OBTAIN FDA AND OTHER GOVERNMENTAL
APPROVALS

  Our activities are regulated by a number of government authorities in the
United States and other countries, including the FDA pursuant to the Federal
Food, Drug and Cosmetic Act.  The FDA regulates pharmaceutical products,
including their manufacture and labeling.  Any product developed by us must
undergo an extensive regulatory approval process which includes preclinical and
clinical testing of such product to demonstrate its safety and efficacy before
it can be marketed.  This regulatory process can require many years and
substantial cost.  Data obtained from testing is subject to varying
interpretations, which can delay, limit or prevent FDA approval.

  None of our technologies have been approved for marketing by the FDA or any of
the FDA's international equivalents. We cannot accurately predict all relevant
regulatory requirements or issues.  Changes in existing regulatory requirements
could prevent or affect the timing of our ability to achieve regulatory
compliance.  Federal and state laws, regulations and policies may be changed
with possible retroactive effect, and depend heavily on administrative policies
and interpretations.  There can be no guarantee that any changes with respect to
Federal and state laws, regulations and policies, and, particularly, with
respect to FDA and other such regulatory bodies, will not have a significant,
negative effect on the Company.  Obtaining FDA clearances can be time-consuming
and expensive, and there is no guarantee that such clearances will be granted or
that the FDA review process will not involve delays that significantly and
negatively affect our products. We may encounter similar delays in foreign
countries.

     Also, regulatory clearances may have significant limitations on the uses
for which such products may be marketed.  In addition, even if regulatory
approval is obtained, any marketed product and its manufacturer are subject to

                                       8
<PAGE>
 
periodic review and any discovery of previously unrecognized problems with a
product or manufacturer could result in suspension or limitation of approvals.
If We obtain any required clearances, there can be no assurance that the
regulatory authority will not withdraw such clearance or that We will continue
to comply with other regulatory requirements.

  NONE OF THE COMPANY'S PRODUCT CANDIDATES HAVE BEEN APPROVED AND THE COMPANY
HAS NO MARKETING EXPERIENCE

     Neither the FDA nor any of the FDA's international equivalents has approved
any of our technologies for marketing.  The research and development of our
technologies will require extensive additional laboratory and clinical testing
prior to regulatory approval.  There can be no guarantee that:

 .    Our product development efforts will be successfully completed
 .    We will obtain required regulatory approvals
 .    Our technologies will be capable of being manufactured in commercial
     quantities at reasonable cost or;
 .    New products, if introduced, will achieve market acceptance.

We do not have any experience in marketing pharmaceutical products.  In order to
earn a profit on any future product, We will be required to either enter into
arrangements with third parties with respect to marketing the products or
develop internally such marketing capability.  There can be no assurance that We
will be able to enter into marketing agreements with others on acceptable terms
or that We can successfully develop such capability, on our own.

 THERE IS UNCERTAINTY IN THE PHARMACEUTICAL INDUSTRY REGARDING PRICING, HEALTH
  CARE REIMBURSEMENT AND RELATED MATTERS

  The continuing efforts of government and third party payers to contain or
reduce health care costs may negatively affect our business.  For example,
certain foreign governments control pricing or profitability of prescription
pharmaceuticals.   In the United States, there have been a number of federal and
state proposals to implement similar government control.  In recent years,
several bills proposing comprehensive health care reform have been introduced in
Congress.  In general, such proposals are designed to reform the health care
system to, among other things;

 .    control or reduce public and private spending on health care;
 .    provide for uniform health insurance benefits packages and administrative
     efficiency in the health care system; and
 .    provide universal access to health care within the next several years.

  Some of the proposals introduced in Congress would potentially limit
pharmaceutical prices and establish mandatory or voluntary refunds. Such
proposals could decrease the price that We receive for any products that We may
sell in the future.  There can be no guarantee that such proposals will not
negatively affect us.  In addition, there have been a number of federal and
state proposals for the government to control the prices of health care products
and services.  It is uncertain if any legislative proposals will be adopted and
how federal, state or private payers for health care goods and services will
respond to any health care reforms.  Such reforms may have a significant effect
on us.  If such proposals have a significant negative effect on the business,
financial condition and profitability of other pharmaceutical companies which
work with us, our ability to commercialize our technologies may be negatively
affected.

  Our ability to commercialize our products may depend, in part, on the extent
to which government health administration authorities, private health insurers
and others provide reimbursement for the costs of our products.  Significant
uncertainty exists as to the reimbursement status of newly approved health care
products, and third-party payers are increasingly challenging the prices charged
for medical products and services.  There can be no guarantee that adequate
insurance coverage will be available to allow us to charge prices for products
which are adequate for us to realize an appropriate return on our cost for
developing these technologies.  If adequate coverage and reimbursement are not
provided for use of our products, the market acceptance of these products will
be negatively affected.  In addition, many health maintenance organizations and
other managed care companies are seeking to negotiate substantial volume
discounts for the sale of pharmaceutical products to their members thereby
reducing profit margins for manufacturers.  Competitive pressures are causing
many manufacturers to accept such discount arrangements.
 
 THE COMPANY HAS NO MANUFACTURING EXPERIENCE

  We currently have no manufacturing facilities for either clinical trial or
commercial quantities of any of our technologies.  To date, We have obtained the
limited amount of quantities required for clinical trials from contract
manufacturing companies. We intend to continue using contract manufacturing
arrangements with experienced firms for the supply of material for both clinical
trials and commercial sale.  As a result of these arrangements, We will depend
upon 

                                       9
<PAGE>
 
third parties to produce and deliver products in accordance with all FDA and
other governmental regulations. There can be no guarantee that such parties will
constantly perform their obligations in a timely fashion, and, in accordance
with the applicable regulations. The failure by any third party to perform their
obligations may delay clinical trials, the commercialization of products, and
the ability to supply product for sale.

 THE COMPANY MAY BE SUBJECT TO PRODUCT LIABILITY CLAIMS AND INSURANCE TO COVER
  SUCH CLAIMS MAY BE UNAVAILABLE OR INADEQUATE

  The use of our product candidates in clinical trials and the future sale of
any resulting products may subject us to liability claims.  There can be no
guarantee that any product liability claims will not significantly and
negatively affect our business or financial condition.  These claims might be
made directly by consumers or by pharmaceutical companies or other sellers of
such products.  While We currently have product liability insurance, there can
be no guarantee that such insurance will be sufficient to meet any liabilities
that may arise.  In addition, such coverage is expensive and may be difficult to
obtain. Our existing coverage may not be adequate as our product development
activities progress.  There can be no guarantee that adequate insurance coverage
will be available in the future at an acceptable cost, if at all.  If We are
unable to obtain sufficient insurance coverage at an acceptable cost to protect
against potential product liability claims, it could prevent or limit our
ability to commercialize our products.

MARKET RISKS

  THE COMPANY MAY NEED ADDITIONAL CAPITAL IN THE FUTURE AND IS NOT CERTAIN
ADDITIONAL CAPITAL WILL BE AVAILABLE

  We have experienced negative cash flows from operations since the company
began operating.  To date, We have funded our business operations primarily from
equity financings. We spend a significant amount for research and development,
including preclinical studies and clinical trials of our technologies. We expect
that our current cash, cash equivalents and investment balances will be
sufficient to fund our capital requirements through at least the next twelve
months.  Thereafter, We may need to raise substantial additional capital to fund
our operations.   Our capital requirements will depend on many factors,
including:

 .    Potential problems, delays, expenses and complications frequently
     encountered by development stage   companies;
 .    The progress of our research and  development activities and our clinical
     trials;
 .    Our ability to meet the terms of any current and future collaborative
     research, manufacturing, marketing or other agreements;
 .    Our ability to obtain regulatory approvals from the FDA and other
     government agencies;
 .    The costs and timing of obtaining regulatory approvals of our products;
 .    The costs of protecting our patent claims and other intellectual property
     rights; and
 .    Changes in economic, regulatory or competitive conditions of the
     pharmaceutical and biotechnology industry.

  Estimates about how much funding will be required are based on a number of
assumptions, all of which are subject to change based on the results and
progress of our research and development activities.  To satisfy our capital
requirements, We may raise additional funds in the public or private capital
markets. If the results of our current or future clinical trials are not
favorable, it may negatively affect our ability to raise additional funds. We
may also seek additional funding through corporate collaborations and other
financing methods.  There can be no guarantee that any such funding will be
available on favorable terms, if at all.  If adequate funds are not available,
We may need to significantly reduce one or more of our research or development
programs, or We may be required to obtain funds through arrangements with others
that may require us to surrender rights to some or all of our technologies.  If
We are successful in obtaining additional financing, the terms of such financing
may have the effect of diluting or adversely affecting the holdings or the
rights of our common stockholders.

  THERE ARE OPTIONS AND WARRANTS OUTSTANDING WHICH MAY CAUSE DILUTION TO THE
STOCKHOLDERS OF THE COMPANY

  As of March 9, 1999, We had granted stock options and warrants to purchase
approximately five million shares of our Common Stock at exercise prices ranging
from $0.63 - $15.00 per share.  Many of these previously granted options and
warrants were issued at exercise prices below the market price of the Common
Stock.  If the holders exercise these stock options and warrants, it will dilute
the percentage ownership interest of our current stockholders. In addition, the
terms upon which We would be able to obtain additional money through the sale of
our stock may be negatively affected because the holders of such outstanding
options and warrants would probably exercise them at a time when We would most
likely be able to obtain capital on terms more favorable to us than those
provided by the exercise of outstanding options and warrants.

                                       10
<PAGE>
 
  As of March 9, 1999, We also had 14,296 and 315,416 shares of Series A and
Series C Convertible Preferred Stock outstanding, respectively, which are
currently convertible into 250,719 and 1,577,080 shares of common stock,
respectively.  If the holders convert their shares of preferred stock into
common stock, it will dilute the percentage ownership interest of our current
stockholders.

 THERE HAS BEEN A LIMITED PUBLIC MARKET FOR THE COMPANY'S COMMON STOCK, THE
  PRICES HAVE BEEN VOLATILE AND THE COMPANY HAS NEVER PAID DIVIDENDS TO ITS
  STOCKHOLDERS

  Historically, the trading volume of our Common Stock has fluctuated
significantly.  At times our trading volume has been significant while at other
times our trading volume has been relatively low.  The market price of our
Common Stock has been highly volatile and it may continue to be highly volatile
similar to the securities of other public biotechnology companies.  Factors
which may have a significant effect on the market price of our common stock
include:

 .    the discovery of new technologies in fields in which We are developing
     products
 .    the results of clinical trials
 .    FDA approval of new products
 .    Proposed government regulations and
 .    Issues relating to patents or proprietary rights.

  The securities markets have experienced volatility that affects prices of
equity securities of biotechnology companies which is often unrelated to the
performance of such companies.  Thus, changes in the market price of our common
stock may not be consistent with our actual operations or financial results. We
do not expect to pay any dividends for the foreseeable future.

 YEAR 2000 COMPLIANCE

  The Company has initiated planning for issues related to the upcoming new
millenium.  These issues derive from the use of software and hardware with
embedded chips or processors that use two digits to refer to a year and do not
properly recognize a year that begins with "20" instead of the familiar "19."

  Our plan to address these issues and to enhance our readiness for the Year
2000 is primarily focused on:

 .    Network and facility infrastructure,
 .    Business applications and software, and
 .    External partners

  Within each area, our efforts will involve:

 .    The identification of systems that may be susceptible to Year 2000 issues,
 .    An assessment of the risks to the Company's business of Year 2000 issues,
 .    Fixing problems that are identified, and
 .    Contingency planning.

  We expect that the identification and assessment phases will be completed
during the second quarter of 1999, at which time remediation and contingency
planning will be initiated as appropriate.  The Company primarily operates its
business applications software using the Microsoft Office suite of products.  As
a result, We will primarily rely on the software developer's representations
regarding Year 2000 compliance of their software.

  We intend to assess the possible effects on our operations of the Year 2000
compliance of certain relevant third parties, primarily our service providers,
by requesting confirmation from the parties regarding their Year 2000 readiness.

  The Company does not expect to incur costs in its Year 2000 program that will
be material to its business, financial condition or results of operations.
Although We intend to complete all phases of our Year 2000 program by December
31, 1999, there can be no assurance We will complete our program by then, and
even if this program is successfully completed on schedule, that disruptions in
our business will be avoided.

  Possible consequences of Year 2000 issues that We are unable to adequately
identify, assess or fix include but are not limited to:

 .    Delays in supplies from vendors,

                                       11
<PAGE>
 
 .    Errors in processing transactions and
 .    Diversion of management time and effort to addressing difficulties that
     emerge
 .    Loss of clinical and research data


  The goal of our Year 2000 program is to plan for and reduce the risk of such
difficulties.  There can be no assurance that our Year 2000 program will be
completed in a timely manner or will be successful.

EMPLOYEES

  As of March 9, 1999, the Company employed 10 individuals full-time, of whom
four hold Ph.D. or M.D. degrees. None of the Company's employees is covered by a
collective bargaining agreement.

ITEM 2. PROPERTIES.

  The Company's administrative offices are located in Boston, Massachusetts. The
lease on this 3,500 square foot facility expires on June 30, 1999 and can be
renewed by the Company for additional three year periods. In addition, the
Company has 4,000 square feet of warehouse space in Horsham, Pennsylvania. This
lease will terminate on March 31, 2000. The Company believes that its existing
facilities are adequate for its present and anticipated purposes, except that
additional facilities will be needed if the Company builds its own laboratory
space or undertakes manufacturing operations. The Company, however, has no
present intention to develop such capabilities for its technologies.

ITEM 3. LEGAL PROCEEDINGS.

  The Company is subject to legal proceedings in the normal course of business.
Management believes that these proceedings will not have a material adverse
effect on the consolidated financial statements.

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

  Not applicable.
                     EXECUTIVE OFFICERS OF THE REGISTRANT.
                                        
  The following is a list of the executive officers of the Company and their
principal positions with the Company. Except for S. David Hillson, Esq. and Marc
E. Lanser, M.D., who are employed pursuant to employment agreements, each
individual officer serves at the pleasure of the Board of Directors.

<TABLE>
<CAPTION>
            Name                            Age                       Position
            ----                            ---                       --------                             
<S>                                        <C>         <C>
S. David Hillson, Esq.  ................      58       Chairman of the Board of Directors, President
                                                       And Chief Executive Officer
Marc E. Lanser, M.D.  ..................      50       Executive Vice President and Chief Scientific Officer
Joseph Hernon, CPA  ....................      39       Chief Financial Officer, Secretary
</TABLE>

  S. DAVID HILLSON, ESQ. Mr. Hillson has been President and Chief Executive
Officer and a member of the Board since the Merger with Greenwich in June 1995.
He also has served as Chairman of the Board of Directors since September 1996.
Prior to the Merger, Mr. Hillson served as President, Chief Executive Officer
and a member of the Board of Directors of Old BLSI from November 1994. Prior to
his responsibilities at Old BLSI, from January to November 1994, Mr. Hillson was
Senior Vice President of Josephthal, Lyon & Ross, Incorporated in the research
and investment banking divisions and from November 1992 to January 1994, Mr.
Hillson was the Senior Managing Director, investment banking, at The Stamford
Company in New York City. From October 1990 until October 1992, Mr. Hillson was
an Executive Vice President of the asset management division of Mabon
Securities. Earlier in his career as an investment manager, Mr. Hillson was a
Senior Vice President with Shearson, Lehman, Hutton from 1983 to 1990, where he
managed three mutual funds, primarily in the emerging growth area, for the SLH
Asset Management division. Prior to his fund management responsibilities, he was
the Chairman of the Equity Committee for Hutton Investment Management (1976-
1982). He started his business career as an attorney in New York City, having
received his Juris Doctorate from New York University School of Law. He also
attended the Columbia University School of Business Administration and received
a Bachelor of Arts degree from Columbia College.

  MARC E. LANSER, M.D. Dr. Lanser has been Executive Vice President and Chief
Scientific Officer and a member of the Board since June 1995. Prior to the
Merger, Dr. Lanser held the same position with Old BLSI from November 1994. From
October 1992 until November 1994, Dr. Lanser was President and Chief Executive
Officer of Old BLSI. Prior to assuming the position of President and Chief
Executive Officer of Old BLSI, Dr. Lanser was an Assistant Professor of 

                                       12
<PAGE>
 
Surgery at Harvard Medical School and member of the full-time academic faculty,
where he directed an NIH funded research project in immunology and received an
NIH Research Career Development Award. Dr. Lanser has published more than 30
scientific articles in his field in peer-reviewed journals. Dr. Lanser received
his M.D. from Albany Medical College.

  JOSEPH P. HERNON, CPA. Mr. Hernon has been Chief Financial Officer since
August 1996. Prior to joining the Company, Mr. Hernon was a Business Assurance
Manager at Coopers & Lybrand where he was employed from January 1987 to August
1996. Mr. Hernon holds a Masters of Science in Accountancy from Bentley College
and a Bachelor of Science in Business Administration from the University of
Lowell.


                                    PART II

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


  The Company's Common Stock is traded on The Nasdaq SmallCap Market under the
symbol BLSI.  The following table sets forth the high and low sale prices for
the Company's Common Stock by quarter for 1997 and 1998, as reported by Nasdaq.
These prices reflect inter-dealer quotation, without retail mark-up, mark-downs
or other fees or commissions, and may not necessarily represent actual
transactions.

<TABLE>
<CAPTION>
                                                                                                    High         LOW
                                                                                                 -----------  ----------
<S>                                                                                              <C>          <C>
      1998
         First Quarter  ...............................................................             $ 2 7/16    $1 11/16
         Second Quarter  ..............................................................              8 15/16     1 31/32
         Third Quarter  ...............................................................                4 5/8       1 3/4
         Fourth Quarter  ..............................................................               4 1/32     4 25/32
      1997
         First Quarter  ...............................................................             $     10    $  6 1/4
         Second Quarter  ..............................................................                7 1/2     4 13/16
         Third Quarter  ...............................................................                    9       4 3/8
         Fourth Quarter  ..............................................................                4 1/8     1 31/32
</TABLE>

   On March 9, 1999 the closing sales price for the Common Stock was $7 1/16 per
share. The number of stockholders of record of Common Stock on March 9, 1999 was
approximately 6,700. The Company has not paid any dividends and does not expect
to pay dividends in the foreseeable future.

   Recent sales of unregistered securities:  During the year ended December 31,
1998, the Company issued 48,043 shares of common stock related to sale of common
stock and the exercise of warrants outstanding for which the Company received
consideration in the amount of $ 136,618. In addition, the Company issued 15,686
shares of common stock related to the exercise of 18,883 warrants, of which
3,197 warrants were surrendered to finance the exercise price of the warrants.
In January 1998, the Company issued 225,000 warrants to a financial advisor
which represented a substantial portion of the compensation paid by the Company
for the advisor's services. The Company recorded a non-cash charge of
approximately $290,000 representing the fair value of the warrants at the date
of issuance.

                                       13
<PAGE>
 
ITEM 6. SELECTED FINANCIAL DATA.

  The selected consolidated financial information presented below has been
derived from the audited consolidated financial statements of the Company. This
data is qualified in its entirety by reference to, and should be read in
conjunction with the Company's Consolidated Financial Statements and notes
thereto and Management's Discussion and Analysis of Financial Condition and
Results of Operations, included elsewhere herein.

<TABLE>
<CAPTION>
                                                                       YEAR ENDED
                                                       ------------------------------------------
                                                           December 31,          December 31,
                                                               1994                  1995
                                                        -------------------  --------------------
<S>                                                     <C>                  <C>
Statement of Operations Data
  Revenues  ..........................................         $         0          $    416,940
  Operating expenses  ................................           2,609,068            13,462,322
  Net loss  ..........................................          (2,596,872)          (14,149,151)
  Basic and diluted Net loss per share  ..............         $     (0.66)         $      (2.23)
  Weighted average number of shares outstanding  .....           3,933,921             6,347,993
</TABLE>


<TABLE>
<CAPTION>
                                                                       YEAR ENDED
                                                      ------------------------------------------------------------------
                                                        December 31,   December 31,   December 31,       Period from
                                                            1996           1997           1998            Inception
                                                        -------------  -------------  -------------   (October 16, 1992)
                                                                                                           Through
                                                                                                      December 31, 1998
                                                                                                     --------------------
<S>                                                     <C>            <C>            <C>            <C>
Statement of Operations Data
  Revenues  ..........................................  $    200,000    $    83,060   $                     $    700,000
                                                                                                --
  Operating expenses  ................................     7,047,399      9,202,664      7,682,406            42,559,538
 
  Net loss  ..........................................    (5,996,147)    (7,974,016)    (6,897,024)          (40,163,496)
  Preferred stock preferences.........................   (34,387,953)            --             --
  Net loss available to common shareholders...........   (40,384,100)    (7,974,016)    (6,897,024)
 
  Basic and diluted net loss per share  ..............  $      (0.61)   $     (0.64)   $     (0.52)
   Per share effect of preferred stock preferences....         (3.48)            --             --
   Basic and diluted net loss available to
      common shareholders.............................  $      (4.09)   $     (0.64)   $     (0.52)
 
  Weighted average number of shares outstanding  .....     9,880,222     12,378,219     13,138,862
</TABLE>

<TABLE>
<CAPTION>
                                                                              December 31,
                                      ----------------------------------------------------------------------------------------
                                            1994               1995             1996             1997              1998
                                      -----------------  ----------------  ---------------  ---------------  -----------------
<S>                                   <C>                <C>               <C>              <C>              <C>
Balance Sheet Data
 Total assets  ....................        $   806,502        $6,585,101       $26,153,130      $18,578,969        $12,269,048
 Working capital  .................         (1,518,571)         (297,303)       20,383,735       12,718,875          6,744,226
 Long-term debt  ..................                  0           658,735                 0                0                  0
 Stockholders' equity (deficit)  ..           (906,100)        1,185,802        24,100,406       16,587,165         10,534,849
</TABLE>

                                       14
<PAGE>
 
ITEM 7. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS
OF OPERATIONS.

  The Management's Discussion and Analysis of Financial Condition and Results of
Operations that follows contains forward looking statements based on current
management expectations. Meaningful factors which could cause future results to
differ materially from such expectations include, without limitation, the
following: (i) the results from the Phase III clinical trials for Altropane,
(ii) scientific data collected on the Company's technologies currently in
preclinical research and development, (iii) decisions made by the Food and Drug
Administration ("FDA") or other regulatory bodies with respect to the initiation
of human clinical trials, (iv) decisions made by the FDA or other regulatory
bodies with respect to approval of the amendment to the NDA for Therafectin, and
to the commercial sale of any of the Company's proposed products, including
Therafectin, (v) the commercial acceptance of any products approved for sale and
the ability of the Company to manufacture, distribute and sell for a profit any
products approved for sale, (vi) the Company's ability to obtain the necessary
patents and proprietary rights to effectively protect its proposed products and
technologies, and (vii) the outcome of any collaborations or alliances currently
entered into by the Company or to be entered into by the Company in the future
with pharmaceutical or other biotechnology companies.

RESULTS OF OPERATIONS

 OVERVIEW

  On June 15, 1995, Greenwich Pharmaceuticals Incorporated ("Greenwich")
acquired all of the outstanding common stock of Boston Life Sciences, Inc. ("Old
BLSI") and merged with and into Old BLSI. Effective June 15, 1995, the merged
company was renamed "Boston Life Sciences, Inc." (the "Company") and the
management and Board of Directors of Old BLSI assumed management of the Company.
The acquisition of Old BLSI by Greenwich has been treated as a recapitalization
of Old BLSI with Old BLSI as the acquiror (reverse acquisition). The historical
financial statements prior to June 15, 1995 are those of Old BLSI.

  The Company is a biotechnology company engaged in the research and development
of novel therapeutic and diagnostic products to treat chronic debilitating
diseases such as rheumatoid arthritis, cancer, central nervous system disorders
and autoimmune diseases. The Company anticipates that its (i) research and
development and (ii) general and administrative costs will continue to increase
as the Company attempts to gain regulatory approval for the commercial
introduction of its proposed products. At December 31, 1998, the Company is
considered a development stage enterprise as defined in Statement of Financial
Accounting Standards No. 7.

 YEAR ENDED DECEMBER 31, 1998 AND 1997

  The Company's net loss was $6,897,024 during the year ended December 31, 1998
as compared with $7,974,016 during the year ended December 31, 1997. Net loss
per common share totaled $0.52 per share during 1998 as compared with $0.64 per
share during 1997. The lower net loss in 1998 was primarily due to reduced costs
associated with Therafectin.  The Phase III clinical trial for Therafactin,
which began in March 1996, ended in August 1997.  The effect of these lower
costs were partially offset by (i) higher licensing fees, (ii) an increase in
general and administrative expenses and (iii) a decrease in interest income.

  Revenue was zero during the year ended December 31, 1998 as compared with
$83,060 during the year ended December 31, 1997. Revenue during 1997 was
attributable to an agreement with Zeneca which provided funds to support the
research and development of certain technology.  Such funds were recognized
ratably over the original term of the Agreement which expired in June 1997.

  Research and development expenses were $4,881,889 during the year ended
December 31, 1998 as compared with $4,874,233 during the year ended December 31,
1997.  The majority of the Company's research and development expenses were, and
will continue to be in 1999, sponsored research obligations paid to Harvard
University and its affiliated hospitals.

  Licensing fees were $80,000 during the year ended December 31, 1998 as
compared with $20,000 during the year ended December 31, 1997. The increase is
primarily related to an increase in the number of new technologies licensed to
the Company in 1998 as compared to 1997.  During 1998, the Company paid $40,000
to license two new technologies as compared to $20,000 paid in 1997 for the
right to one new technology. In addition to an initial licensing fee payment,
the Company is obligated to pay additional amounts upon the attainment of
development milestones, as defined in each respective licensing agreement, as
well as royalties upon the sales of any resulting products. During 1998, the
Company incurred a milestone obligation of $40,000 related to the development of
one of its technologies.  The Company expects to pay future licensing fees, the
timing and amounts of which will depend upon the progress attained in developing
existing 

                                       15
<PAGE>
 
technologies and the terms of agreements which may be executed for technologies
currently being developed or which may be developed in the future. There can be
no assurance regarding the likelihood or materiality of any such future
licensing agreements.

  Therafectin related expenses were $423,228 during the year ended December 31,
1998 as compared with $2,190,040 during the year ended December 31, 1997. The
level of expenses in 1997 related to the Company's Phase III clinical trial for
Therafactin which was completed in August 1997. Expenses incurred during 1998
were primarily associated with the preparation of the amendment to the
previously filed NDA for Therafectin.

  In January 1998, the Company announced its intention to seek marketing
approval for Therafectin based upon the cumulative data obtained from the trial
and the input provided by its special panel of clinical rheumatologists. The
consensus of this special advisory panel was that the cumulative safety and
efficacy data on Therafectin justified its use by clinicians looking for a safe
alternative to other more toxic drugs now being used to treat Rheumatoid
Arthritis. The Company also reported that further analysis of the trial data
strongly suggested the therapeutic efficacy of Therafectin. Applying the widely-
accepted "Paulus" criteria of therapeutic efficacy (at least a 20% improvement
in 4 of 6 measures: joint tenderness scores, joint swelling scores, physician's
and patient's global assessment, erythrocyte sedimentation rate (ESR), and
morning stiffness), there was a highly statistically significant difference in
the percentage of Therafectin patients meeting the Paulus criteria for
therapeutic efficacy as compared to the percentage of placebo patients meeting
the Paulus criteria (p greater than 0.02). Among the predefined secondary
efficacy variables, the reduction in the number of swollen joints, the ESR
results, Functional Class scores, and the CLINHAQ (a quality of life
measurement) were statistically significant in favor of Therafectin. In
addition, after withdrawing non-steroidal medication, clinical secondary
variables returned to baseline or better in the Therafectin group, while
remaining statistically significantly worse than baseline in the placebo group.
Applying the American College of Rheumatology (ACR) "50% improvement" criteria
to the number of swollen joints, 36% of Therafectin patients experienced at
least a 50% decrease in the number of swollen joints compared to 23% of placebo
patients resulting in a statistically significant difference (p greater than
0.04). Finally, in the subgroup of patients (about half the total number)
entering the study with greater than the median number of swollen joints (ten),
the primary and secondary variables specified in the trial protocol were
statistically significant. The Company believes that statistically significant
improvement in the important clinical variables related to joint swelling,
functional class, and "quality of life" experienced by the Therafectin patients
demonstrates the clinical efficacy of Therafectin. Because the beneficial effect
is most obvious on joint swelling, the Company believes that the other
improvements are secondary to Therafectin's apparent ability to favorably impact
the underlying disease.

  Before any commercially viable product from Therafectin may be developed, and
any revenue generated therefrom, the Company currently expects that between
$500,000 and $1,000,000 of additional future expense will be necessary.  There
can be no assurance, however, that the Company will not need to spend more than
the range indicated, or that the expenditure of these additional amounts will
result in the regulatory approval of any compounds or that such approval will
ever be obtained by the Company.  Moreover, if the Company is ultimately
unsuccessful in obtaining regulatory approval for Therafectin, the Company would
be required to write off the $3.5 million asset value attributable to
Therafectin as reflected on the Company's balance sheet.

  General and administrative expenses were $2,297,289 during the year ended
December 31, 1998 as compared with $2,118,391 during the year ended December 31,
1997. This increase was primarily due to non-cash charges related to certain
changes in the provisions of the Company's stock option plans and the issuance
of warrants to a financial advisor.            .

  Interest income was $785,382 during the year ended December 31, 1998 as
compared with interest income of $1,148,025 during the year ended December 31,
1997.  Average cash and investment balances during 1998 were lower as compared
to 1997.

  At December 31, 1998, the Company had net deferred tax assets of approximately
$22 million for which a full valuation allowance has been established. As a
result of its concentrated efforts on research and development and Therafectin
related expenses, the Company has a history of incurring net operating losses
and expects to incur additional net operating losses for the foreseeable future.
Accordingly, management believes that, at the present time, it is appropriate to
conclude that it is more likely than not that the future benefits related to the
deferred tax assets will not be realized and, therefore, has provided a full
valuation allowance for these assets. In the event the Company achieves
profitability, these deferred tax assets may be available to offset future
income tax liabilities and expense.

                                       16
<PAGE>
 
 YEAR ENDED DECEMBER 31, 1997 AND 1996

  The Company's net loss, excluding preferred stock preferences, was $7,974,016
during the year ended December 31, 1997 as compared with $5,996,147 during the
year ended December 31, 1996. Net loss per common share, excluding the effect of
preferred stock preferences, totaled $.64 per share during 1997 as compared with
$.61 per share during 1996. The higher loss in 1997 was primarily due to (i)
lower revenues, (ii) increased research and development expenses, and (iii)
higher costs associated with the completion of the Phase III clinical trial for
Therafectin which began in March 1996 and ended in August 1997.  The effect of
these items were partially offset by (i) lower licensing fees, (ii) decreased
general and administrative expenses and (iii) a reduction in interest expense.

  The net loss available to common shareholders for the 1996 period, including
preferred stock preferences of $34,387,953, totaled $40,384,100.  Net loss per
common share for 1996, including $3.48 attributable to preferred stock
preferences, totaled $4.09. In January and February 1996, the Company completed
a private placement of Series A Convertible Preferred Stock and warrants.  Based
on the market price of the Company's stock on the date of issuance, the
preferred stock had a beneficial conversion feature of $28,389,846 and the
warrants had a fair value of $5,998,107.

  Revenue was $83,060 during the year ended December 31, 1997 as compared with
$200,000 during the year ended December 31, 1996. Revenue for both periods was
attributable to a research and development agreement under which a certain
pharmaceutical company provided funds to support the research and development of
certain technology. The research agreement expired in 1997.

  Research and development expenses were $4,874,233 during the year ended
December 31, 1997 as compared with $2,408,734 during the year ended December 31,
1996. This increase was primarily due to the Company incurring a higher level of
research and development expenses for its existing technologies in 1997 as
compared to 1996 related to the continued advancement of its clinical efforts,
and, to a lesser degree, to an increase in the number of personnel supporting
the Company's research and development activities. The majority of the Company's
research and development expenses were sponsored research obligations paid to
Harvard University and its affiliated hospitals.

  Licensing fees were $20,000 during the year ended December 31, 1997 as
compared with $390,000 during the year ended December 31, 1996. The decrease was
primarily related to a decrease in the number of new technologies licensed to
the Company in 1997 as compared to 1996, as well as lower costs to obtain such
licenses. During 1997, the Company paid $20,000 to license one new technology as
compared to $360,000 paid in 1996 for the rights to four new technologies. In
addition to an initial licensing fee payment, the Company is obligated to pay
additional amounts upon the attainment of development milestones, as defined in
each respective licensing agreement, as well as royalties upon the sales of any
resulting products. During 1996, the Company made a milestone payment of $30,000
related to the development of one of its technologies. The Company expects to
pay future licensing fees, the timing and amounts of which will depend upon the
progress attained in developing existing technologies and the terms of
agreements which may be executed for technologies currently being developed or
which may be developed in the future. There can be no assurance regarding the
likelihood or materiality of any such future licensing agreements.

  Therafectin related expenses were $2,190,040 during the year ended December
31, 1997 as compared with $1,546,791 during the year ended December 31, 1996.
The increased level of expenses in 1997 related to the higher average number of
patients enrolled in the Company's Phase III clinical trial for Therafectin in
1997 as compared to 1996.  The Company commenced its Phase III clinical trial in
March 1996 and completed the trial in August 1997.  On September 30, 1997, the
Company announced the preliminary results of the trial.  An analysis of the
trial data indicated that a statistically significant difference between
Therafectin and placebo in the percentage of patients achieving the overall
composite efficacy index had not been realized.  However, in an important
secondary efficacy variable, there was a highly statistically significant
difference between Therafectin and placebo in reducing the number of swollen
joints in patients.  Further, in a group of patients with higher levels of
swollen joints (approximately half of those completing the trial), there was a
statistically significant difference between Therafectin and placebo in
achieving success as measured by the overall composite efficacy index.
Additionally, utilizing the most recent MIRA ("Minocycline in Rheumatoid
Arthritis") criteria for "meaningful improvement", defined as at least a 50%
improvement in joint swelling compared to baseline, Therafectin showed a
statistically significant improvement compared to placebo. Consistent with the
previously established excellent safety profile of Therafectin, there were no
significant adverse events attributable to Therafectin during the course of the
study.  In view of the excellent safety profile of Therafectin, and the previous
statistically significant successful trial combined with at least three
supportive trials (previously completed by Greenwich), the Company initiated
plans to convene an advisory panel of rheumatologists in early 1998 to seek
input and advice regarding whether to proceed with the submission of an
amendment to the pending NDA seeking approval for the drug.

                                       17
<PAGE>
 
  General and administrative expenses were $2,118,391 during the year ended
December 31, 1997 as compared with $2,701,874 during the year ended December 31,
1996. This decrease was primarily due to lower professional services expenses.

  Interest income was $1,148,025 during the year ended December 31, 1997 as
compared with interest income of $1,151,810 during the year ended December 31,
1996.  Average cash and investment balances during 1997 were comparable to 1996.
The interest income realized during both periods related to the Company raising
net proceeds of approximately $25.6 million from two private placements
completed in 1996. Interest expense totaled $2,437 during the year ended
December 31, 1997 as compared to $300,558 during the year ended December 31,
1996.   Interest expense incurred in 1996 included amounts related to (i) $2.175
million of notes payable, which were fully repaid on April 1, 1996, (ii) $1.0
million of convertible debentures, which were converted to common stock in the
first quarter of 1996, and (iii) the amortization of the discount and debt
issuance costs on both debt instruments during the period outstanding in 1996.

  At December 31, 1997, the Company had net deferred tax assets of approximately
$19.5 million for which a full valuation allowance has been established. As a
result of its concentrated efforts on research and development and Therafectin
related expenses, the Company has a history of incurring net operating losses
and expects to incur additional net operating losses for the foreseeable future.
Accordingly, management believes that, at the present time, it is appropriate to
conclude that it is more likely than not that the future benefits related to the
deferred tax assets will not be realized and, therefore, has provided a full
valuation allowance for these assets. In the event the Company achieves
profitability, these deferred tax assets may be available to offset future
income tax liabilities and expense.
 
LIQUIDITY AND CAPITAL RESOURCES

  Since its inception, the Company has primarily satisfied its working capital
requirements from the sale of the Company's securities through private
placements. In February 1999, the Company raised approximately $8.2 million in
net proceeds by completing two private placements. The first transaction, which
consisted of shares of common stock and warrants to purchase shares of the
Company's common stock, raised approximately $2.5 million in net proceeds.  The
second transaction, which consisted of shares of its Series C Convertible
Preferred Stock and warrants to purchase shares of the Company's common stock,
raised approximately $5.7 million in net proceeds.  In January and February
1996, the Company raised approximately $20.6 million of net proceeds by
completing a private placement of units consisting of (i) shares of its Series A
Convertible Preferred Stock and (ii) warrants to purchase shares of the
Company's common stock. In June 1996, the Company raised approximately $5.0
million of net proceeds by completing a private placement of common stock. For
additional information related to the private placements, see Notes 8 and 9 of
the Notes to the Consolidated Financial Statements included in this Form 10-K.

  In addition, the Company has raised working capital through the issuance of
notes payable and convertible debentures. In March 1995, Old BLSI issued
$2,175,000 of units consisting of notes payable, common stock and warrants to
purchase shares of Old BLSI's Series B Preferred Stock. The $2,175,000 of notes
payable became obligations of the Company and the warrants exercisable for
shares of Old BLSI Series B Preferred Stock were exchanged for warrants
exercisable for shares of the Company's common stock. In the second quarter of
1996, the Company repaid all accrued interest plus the remaining principal of
$1,525,000 of the notes payable. In December 1995, the Company also issued
$1,000,000 of convertible subordinated debentures. During the first quarter of
1996, the entire $1,000,000 of convertible subordinated debentures were
converted into 156,605 shares of common stock.

  In the future, the Company's working capital and capital requirements will
depend on numerous factors, including the progress of the Company's research and
development activities, the level of resources that the Company devotes to the
developmental, clinical, and regulatory aspects of its products, and the extent
to which the Company enters into collaborative relationships with pharmaceutical
and biotechnology companies.

  At December 31, 1998, the Company had available cash, cash equivalents, and
investments of approximately $7.9 million and working capital of approximately
$6.7 million. In February 1999, the Company completed two separate private
placements from which the Company received approximately $8.2 million in net
proceeds. The Company believes that the level of financial resources available
at December 31, 1998, as well as the additional capital received in 1999, will
provide sufficient working capital to meet its anticipated expenditures for more
than the next twelve months. The Company may raise additional capital in the
future through collaboration agreements with other pharmaceutical or
biotechnology companies, debt financing and equity offerings. There can be no
assurance, however, that the Company will be successful or that additional funds
will be available on acceptable terms, if at all.

                                       18
<PAGE>
 
YEAR 2000 COMPLIANCE
 
  The Company has initiated planning for issues related to the upcoming new
millenium.  These issues derive from the use of software and hardware with
embedded chips or processors that use two digits to refer to a year and do not
properly recognize a year that begins with "20" instead of the familiar "19."
The Company's plan to address these issues and to enhance the Company's
readiness for the Year 2000 is primarily focused on (1) network and facility
infrastructure, (2) business applications and software, and (3) external
partners.  Within each area, the Year 2000 program will involve (a) the
identification of systems that may be susceptible to Year 2000 issues, (b) the
assessment of the degree of readiness of those systems for the Year 2000 and an
assessment of the risks to the Company's business, (c) the remediation of
problems that are identified, and (d) contingency planning.

  The Company's network and facility infrastructure, located at its Boston
headquarters, includes personal computers and other network equipment, together
with general facility systems such as telephone and security systems.  The
Company expects that the identification and assessment phases will be completed
during the second quarter of 1999, at which time remediation and contingency
planning will be initiated as appropriate.  The Company primarily operates its
business applications software using the Microsoft Office suite of products.
For many software applications, the Company will, in the assessment phase, rely
on the software developer's representations regarding Year 2000 compliance of
their software.  There can be no assurance, however, that software applications
represented by developers as being Year 2000 compliant will be free from Year
2000 errors and defects.

  The Company intends to assess the possible effects on its operations of the
Year 2000 compliance of certain relevant third parties, primarily its service
providers by requesting confirmation from such parties regarding their Year 2000
readiness and, if required, site visits and interviews to solicit information
from these parties.  In the event the Company identifies a problem with respect
to a particular vendor, then the Company may be forced to identify alternative
sources of supply or services.  However, the Company's ability to seek
alternative sources of supply is subject to FDA restrictions and may involve
extensive validation processes.  The failure to timely identify and validate an
alternative supplier could have a material adverse effect on the Company's
business, financial condition and results of operations.

  The Company does not expect to incur costs in its Year 2000 program that will
be material to its business, financial condition or results of operations.
However, until the Company completes the identification and assessment phases of
its program, the full extent of the remediation costs will not be known and
there can be no assurance that such costs will not be material.  The Company
will utilize both internal and external resources, such as consultants and
professional advisors, in implementing the Year 2000 program and the Company
currently estimates that the external resources required during the
identification and assessment phases of the Year 2000 program will not cost more
than approximately $15,000.  Because the Year 2000 program is an ongoing
process, all cost estimates are subject to change.  Specific contingency plans
will be developed upon completion of the assessment phases.

  Although the Company intends to complete all phases of its Year 2000 program
by December 31, 1999, there can be no assurance, even if this program is
successfully completed on schedule, that disruptions in the Company's business
will be avoided. Year 2000 issues are pervasive in nature and involve highly
technical issues, not all of which are under the Company's control. Possible
consequences of Year 2000 issues that the Company is unable to adequately
identify, assess or remediate include but are not limited to: delays in supplies
from vendors, errors in processing transactions and diversion of management time
and effort to addressing difficulties that emerge. The goal of the Company's
Year 2000 program is to plan for and reduce the risk of such difficulties. There
can be no assurance that the Year 2000 program will be completed in a timely
manner or will be successful.

 RECENT ACCOUNTING PRONOUNCEMENTS

  In June 1998, the FASB issued Statement of Financial Accounting Standards No.
133, "Accounting for Derivative Instruments and Hedging Activities," which
establishes accounting and reporting standards for derivative instruments and
hedging activities.  It requires that an entity recognize all derivatives as
either assets or liabilities in the statement of financial position and measure
those instruments at fair value.  The Company, to date, has not engaged in
derivative and hedging activities, and accordingly does not believe that the 
adoption of SFAS No. 133 will have a material impact on the financial reporting 
and related disclosures of the Company. The Company will adopt SFAS No. 133 as
required for its first quarterly filing of 2000.

                                       19
<PAGE>
 
income, as presented on the accompanying consolidated balance sheets, consists
of the net unrealized gains on available-for-sale securities.

ITEM 7 A.  QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

  Not applicable.

                                       20
<PAGE>
 
ITEM 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA.

                       REPORT OF INDEPENDENT ACCOUNTANTS

To the Board of Directors and Stockholders of
Boston Life Sciences, Inc.

In our opinion, the accompanying consolidated balance sheets and the related
consolidated statements of income, stockholders' equity, cash flows and
comprehensive loss present fairly, in all material respects, the financial
position of Boston Life Sciences, Inc. (a development stage enterprise) and its
subsidiaries (the "Company") at December 31, 1998 and 1997, and the results of
their operations and of their cash flows for each of the three years in the
period ended December 31, 1998 and for the period from inception (October 16,
1992) through December 31, 1998, in conformity with generally accepted
accounting principles. These financial statements are the responsibility of the
Company's management; our responsibility is to express an opinion on these
financial statements based on our audits. We conducted our audits of these
statements in accordance with generally accepted auditing standards which
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, assessing the accounting principles
used and significant estimates made by management, and evaluating the overall
financial statement presentation. We believe that our audits provide a
reasonable basis for the opinion expressed above.

                                                      PricewaterhouseCoopers LLP



Boston, Massachusetts
March 11, 1999

                                       21
<PAGE>
 
                           BOSTON LIFE SCIENCES, INC.

                        (A DEVELOPMENT STAGE ENTERPRISE)

                          CONSOLIDATED BALANCE SHEETS

<TABLE>
<CAPTION>
                                                                                                  DECEMBER 31,
                                                                                    -------------------------------------
                                                                                            1998               1997
                                                                                      -----------------  -----------------
<S>                                                                                   <C>                <C>
ASSETS
Current assets:
  Cash and cash equivalents  .....................................................        $     71,834       $  1,713,975
  Short-term investments  ........................................................           7,837,992         12,338,496
  Other current assets  ..........................................................             568,599            658,208
                                                                                          ------------       ------------
     Total current assets  .......................................................           8,478,425         14,710,679
Fixed assets, net  ...............................................................              14,417             95,061
Acquired technology  .............................................................           3,500,000          3,500,000
Other assets  ....................................................................             276,206            273,229
                                                                                          ------------       ------------
     Total assets  ...............................................................        $ 12,269,048       $ 18,578,969
                                                                                          ============       ============
 
LIABILITIES AND STOCKHOLDERS' EQUITY
Current liabilities:
  Accounts payable and accrued expenses  .........................................        $  1,734,199       $  1,991,804
 
Commitments and contingencies (Note 12)
 
Stockholders' equity:
  Series A convertible preferred stock, $.01 par value, 1,000,000 shares
    authorized; 16,996 and 28,372 shares issued and outstanding at 
    December 31, 1998 and 1997, respectively  ....................................                 170                284
 
  Common stock, $.01 par value; 25,000,000 shares authorized; 13,276,978
    and 12,993,838 shares issued and outstanding at December 31, 1998 and
    1997, respectively  ..........................................................             132,770            129,938
Additional paid-in capital  ......................................................          50,489,202         49,624,386
Accumulated other comprehensive income  ..........................................              76,203             99,029
Deficit accumulated during development stage  ....................................         (40,163,496)       (33,266,472)
                                                                                          ------------       ------------
     Total stockholders' equity  .................................................          10,534,849         16,587,165
                                                                                          ------------       ------------
     Total liabilities and stockholders' equity  .................................        $ 12,269,048       $ 18,578,969
                                                                                          ============       ============

                       The accompanying notes are an integral part of the consolidated financial statements.
</TABLE>

                                       22
<PAGE>
 
                           BOSTON LIFE SCIENCES, INC.

                        (A DEVELOPMENT STAGE ENTERPRISE)

                     CONSOLIDATED STATEMENTS OF OPERATIONS

<TABLE>
<CAPTION>
                                                            For the Year Ended December 31,
                                                --------------------------------------------------------- 
                                                                                                             From inception
                                                                                                              (October 16,
                                                                                                                1992) to
                                                      1998                1997                1996          December 31, 1998
                                                -----------------  -----------------  ------------------  --------------------
<S>                                             <C>                <C>                <C>                 <C>
Revenues   ..................................        $        --        $    83,060        $    200,000          $    700,000
Operating Expenses:
  Research and development  .................          4,881,889          4,874,233           2,408,734            16,779,002
  Licensing fees  ...........................             80,000             20,000             390,000               733,683
  Therafectin related  ......................            423,228          2,190,040           1,546,791             4,160,059
  General and administrative  ...............          2,297,289          2,118,391           2,701,874            10,465,250
  Purchased in-process research and
  development  ..............................                 --                 --                  --            10,421,544
                                                     -----------        -----------        ------------          ------------
                                                       7,682,406          9,202,664           7,047,399           (42,559,538)
                                                     -----------        -----------        ------------          ------------
  Loss from operations  .....................         (7,682,406)        (9,119,604)         (6,847,399)          (41,859,538)
Interest expense  ...........................                 --             (2,437)           (300,558)           (1,461,829)
Interest income  ............................            785,382          1,148,025           1,151,810             3,157,871
                                                     -----------        -----------        ------------          ------------
  Net loss  .................................        $(6,897,024)       $(7,974,016)       $ (5,996,147)         $(40,163,496)
                                                     ===========        ===========        ============          ============
 
Calculation of net loss available to common
  shareholders:
  Net loss....................................       $(6,897,024)       $(7,974,016)       $ (5,996,147)
  Preferred stock preferences (Note 9)........                --                 --         (34,387,953)
                                                     -----------        -----------        ------------
  Net loss available to common
  shareholders................................       $(6,897,024)       $(7,974,016)       $(40,384,100)
                                                     ===========        ===========        ============
 
Calculation of basic and diluted net loss
  available to common shareholders:
  Net loss....................................            $(0.52)            $(0.64)       $      (0.61)

  Preferred stock preferences (Note 9)   .....                --                 --               (3.48)
                                                     -----------        -----------        ------------
  Basic and diluted net loss available to
                                                          $(0.52)            $(0.64)       $      (4.09)
  common shareholders.........................       ===========        ===========        ============
 
Weighted average shares outstanding  .........        13,138,862         12,378,219           9,880,222
                                                     ===========        ===========        ============

       The accompanying notes are an integral part of the consolidated financial statements.
</TABLE>
                                                                                

                                       23
<PAGE>
 
                           BOSTON LIFE SCIENCES, INC.

                        (A DEVELOPMENT STAGE ENTERPRISE)

           CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (DEFICIT)
     FOR THE PERIOD FROM INCEPTION (OCTOBER 16, 1992) TO DECEMBER 31, 1998
<TABLE>
<CAPTION>
                                                                                                        Series A
                                                                                                     Preferred Stock
                                                                                              -----------------------------
                                                                                                 Number of        Par 
                                                                                                  Shares         Value
                                                                                              ------------- ---------------
<S>                                                                                           <C>              <C>
Issuance of common stock to founders .......................................................
Net loss  ..................................................................................

Balance at December 31, 1992 ...............................................................
Issuance of option to purchase common stock to a licensor ..................................
Issuance of common stock to a consultant ...................................................
Issuance of common stock, net issuance costs of $500,988 ...................................
Net loss  ..................................................................................

Balance at December 31, 1993 ...............................................................
Issuance of common stock, net issuance costs of $406,916 ...................................
Issuance of common stock upon exercise of option ...........................................
Net loss  ..................................................................................

Balance at December 31, 1994 ...............................................................
Issuance of common stock and warrants related to bridge financing ..........................
Issuance of common stock and warrants upon merger ..........................................
Issuance of common stock in exchange for minority interest in certain subsidiaries .........
Issuance of common stock upon exercise of options ..........................................
Issuance of common stock subject to redemption .............................................
Expiration of valuation periods for common stock subject to redemption .....................
Issuance of convertible debt ...............................................................
Deferred compensation related to stock options and warrants granted ........................
Compensation expense related to stock options and warrants .................................
Net loss  ..................................................................................              --            --
                                                                                              --------------   -----------
Balance at December 31, 1995 ...............................................................       
Issuance of preferred stock, net issuance costs of $3,397,158 ..............................         239,911       $ 2,399 
Conversion of preferred stock into common stock ............................................        (106,301)       (1,063) 
Issuance of common stock, net issuance costs of $42,537 ....................................
Issuance of common stock upon conversion of convertible debentures .........................
Issuance of common stock upon exercise of warrants and options .............................
Expiration of valuation periods for common stock subject to redemption .....................
Deferred compensation related to stock options granted .....................................
Compensation expense related to stock options ..............................................
Net loss  ..................................................................................              --            --
                                                                                              --------------   -----------
Balance at December 31, 1996 ...............................................................         133,610         1,336
Conversion of preferred stock into common stock ............................................        (105,238)       (1,052)
Issuance of common stock upon exercise of warrants and options .............................
Expirationof valuation periods for common stock subject to redemption.......................
Deferred compensation related to stock options granted .....................................
Compensation expense related to stock options ..............................................
Unrealized gains on investments ............................................................
Net loss  ..................................................................................              --            --
                                                                                              --------------   -----------
Balance at December 31, 1997 ...............................................................          28,372           284
Conversion of preferred stock into common stock ............................................         (11,376)         (114)
Issuance of common stock upon exercise of warrants and options .............................
Compensation expense related to stock options and warrants .................................
Unrealized loss on investments .............................................................
Net loss  ..................................................................................              --            --
                                                                                              --------------   -----------
Balance at December 31, 1998 ...............................................................          16,996       $   170
                                                                                              ==============   ===========

               The accompanying notes are an integral part of the consolidated financial statements.
</TABLE>
                                                                                

                                       24
<PAGE>
 
<TABLE> 
<CAPTION>
                                                                                  
                                                                                  
                                                                                   
                                                                                                         
                                                                                    Deficit            
                                                             Accumulated           Accumulated            Total
          Common Stock        Additional                        Other                During            Stockholders'
   Number of                   Paid-in       Deferred       Comprehensive          Development            Equity
    Shares       Par Value     Capital     Compensation         Income                Stage             (Deficit)
- ---------------  ---------  -------------  -------------  ------------------  ----------------------  --------------
<S>              <C>        <C>            <C>            <C>                 <C>                     <C>
 1,520,044         $ 15,200   $    33,525                                               $         --    $     48,725
        --               --            --             --                  --                (295,388)       (295,388)
 ---------         --------   -----------   ------------   -----------------            ------------    ------------
 1,520,044           15,200        33,525                                                   (295,388)       (246,663)
        --               --        62,433                                                         --          62,433
     3,913               40         7,460                                                         --           7,500
 1,545,713           15,457     2,458,545                                                         --       2,474,002
        --               --            --             --                  --              (2,254,898)     (2,254,898)
 ----------        --------   -----------   ------------   -----------------            ------------    ------------
 3,069,670           30,697     2,561,963                                                 (2,550,286)         42,374
   987,355            9,873     1,638,211                                                         --       1,648,084
    95,378              954          (640)                                                        --             314
        --               --            --             --                  --              (2,596,872)     (2,596,872)
 ----------        --------   -----------   ------------   -----------------            ------------    ------------
 4,152,403           41,524     4,199,534                                                 (5,147,158)       (906,100)
   198,366            1,984       797,409                                                                    799,393
 3,519,736           35,197    14,568,751                                                                 14,603,948
   100,000            1,000        (1,000)                                                                        --
    37,567              375       184,952                                                                    185,327
   324,675            3,247        (3,247)                                                                        --
                                  180,600                                                                    180,600
                                  411,002                                                                    411,002
                                  327,146      $(327,146)                                                         --
                                       --         60,783                                                      60,783
        --               --            --             --                  --             (14,149,151)    (14,149,151)
 ----------        --------   -----------   ------------   -----------------            ------------    ------------
 8,332,747           83,327    20,665,147       (266,363)                                (19,296,309)      1,185,802
        --               --    20,591,443             --                                          --      20,593,842
 1,864,276           18,643       (17,580)                                                                        --
   547,274            5,473     5,001,490                                                                  5,006,963
   156,605            1,566       576,023                                                                    577,589
   203,952            2,040       499,765                                                                    501,805
                                1,764,872                                                                  1,764,872
                                  439,607       (439,607)                                                         --
                                                 465,680                                                     465,680
        --               --            --             --                  --              (5,996,147)     (5,996,147)
 ----------        --------   -----------   ------------   -----------------            ------------    ------------
11,104,854          111,049    49,520,767       (240,290)                                (25,292,456)     24,100,406
 1,845,634           18,456       (17,404)                                                                        --
    43,350              433        54,283                                                                     54,716
                                   28,886                                                                     28,886
                                   37,854        (37,854)                                                         --
                                                 278,144                                                     278,144
                                                                    $ 99,029                                  99,029
      --                 --            --             --                  --              (7,974,016)     (7,974,016)
 ----------        --------   -----------   ------------   -----------------            ------------    ------------
12,993,838          129,938    49,624,386             --              99,029             (33,266,472)     16,587,165
   199,509            1,995        (1,881)                                                                        --
    83,631              837       147,472                                                                    148,309
                                  719,225                                                                    719,225
                                                                     (22,826)                                (22,826)
      --                 --            --             --                  --              (6,897,024)     (6,897,024)
 ----------        --------   -----------   ------------   -----------------            ------------    ------------
13,276,978         $132,770   $50,489,202      $      --            $ 76,203            $(40,163,496)   $ 10,534,849
 ==========        ========   ===========   ============   =================            ============    ============

            The accompanying notes are an integral part of the consolidated financial statements.

</TABLE>
                                                                                

                                       25
<PAGE>
 
                           BOSTON LIFE SCIENCES, INC.

                        (A DEVELOPMENT STAGE ENTERPRISE)

                     CONSOLIDATED STATEMENTS OF CASH FLOWS

<TABLE>
<CAPTION>
                                                                              For the Year Ended December 31,
                                                                          -----------------------------------
                                                                                                                  From Inception
                                                                                                                   (October 16,
                                                                                                                     1992) to
                                                                                                                   December 31,
                                                                  1998             1997             1996               1998
                                                              ------------       -----------     ------------      -------------
<S>                                                           <C>             <C>               <C>                <C>
Cash flows from operating activities:                        
 Net loss  ..................................................  $(6,897,024)      $(7,974,016)    $ (5,996,147)      $(40,163,496)
 Adjustments to reconcile net loss to net cash used          
  for operating activities:                                                
  Purchased research and development in-process  ............           --                --               --         10,421,544
  Compensation charge related to options and warrants  ......      719,225           278,144          465,680          1,593,765
  Amortization and depreciation  ............................       80,644            79,946          297,839          1,451,816
  Changes in current assets and liabilities:                         
   Decrease (increase) in other current assets  .............       89,609           371,408         (590,513)           (73,071)
   (Decrease) increase in accounts payable and accrued       
    expenses  ...............................................     (257,605)           83,892          396,741            786,534
   (Decrease) increase in deferred revenue  .................           --           (83,060)              --                 --
                                                              ------------       -----------     ------------       ------------
 Net cash used for operating activities  ....................   (6,265,151)       (7,243,686)      (5,426,400)       (25,982,908)
                                                              ------------       -----------     ------------       ------------
Cash flows from investing activities:                        
 Cash acquired through the merger with                       
  Greenwich Pharmaceuticals, Inc.  ..........................           --                --               --          1,758,037
 Purchase of fixed assets  ..................................           --           (74,010)        (107,384)          (256,701)
 Other.......................................................       (2,977)         (157,555)        (107,674)          (266,406)
 Short term investments:                                     
  Purchases  ................................................  (13,340,276)       (8,984,893)     (22,324,741)       (44,898,230)
  Sales and maturities  .....................................   17,817,954         9,740,448        9,578,039         37,136,441
                                                              ------------       -----------     ------------       ------------
 Net cash provided by (used for) investing activities  ......    4,474,701           523,990      (12,961,760)        (6,526,859)
                                                              ------------       -----------     ------------       ------------
Cash flows from financing activities:                        
 Proceeds from issuance of common stock  ....................      148,309            83,602        5,686,177         13,158,054
 Proceeds from issuance of preferred stock  .................           --                --       20,872,170         20,872,170
 Proceeds from issuance of notes payable  ...................           --                --               --          2,585,000
 Proceeds from issuance of convertible debt  ................           --                --               --          1,000,000
 Principal payments of notes payable  .......................           --           (61,752)      (1,628,062)        (2,796,467)
 Payment of note issuance costs  ............................           --                --               --           (399,702)
 Payment of stock issuance and merger transaction costs  ....           --                --         (256,142)        (1,837,454)
                                                              ------------       -----------     ------------       ------------
 Net cash provided by financing activities  .................      148,309            21,850       24,674,143         32,581,601
                                                              ------------       -----------     ------------       ------------
Net increase (decrease) in cash and cash equivalents  .......   (1,642,141)       (6,697,846)       6,285,983             71,834
Cash and cash equivalents, beginning of period  .............    1,713,975         8,411,821        2,125,838                 --
                                                              ------------       -----------     ------------       ------------
Cash and cash equivalents, end of period  ................... $     71,834       $ 1,713,975     $  8,411,821       $     71,834
                                                              ============       ===========     ============       ============
Supplemental cash flow disclosures:                          
 Interest paid  ............................................. $         --       $     2,437     $    198,739
Non cash transactions (see notes 8, 9 and 10)

                The accompanying notes are an integral part of the consolidated financial statements.
</TABLE>

                                       26
<PAGE>
 
                           BOSTON LIFE SCIENCES, INC.

                        (A DEVELOPMENT STAGE ENTERPRISE)

                 CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS

<TABLE>
<CAPTION>
 
 
                                                              FOR THE YEAR ENDED DECEMBER 31,
                                                      ------------------------------------------------
                                                                                                           From inception
                                                                                                            (October 16,
                                                                                                               1992) to
                                                           1998             1997             1996          December 31, 1998
                                                      -------------     ------------     -------------     ------------------
<S>                                                   <C>               <C>              <C>                <C>
Net loss.............................................  $(6,897,024)      $(7,974,016)     $ (5,996,147)      $(40,163,496)  

  Preferred stock preferences (Note 9)...............           --                --       (34,387,953)       (34,387,953)

  Unrealized gains on securities..................... 

   Unrealized holding gains arising during the period      (25,310)          102,797                --             76,987

   Investment gains (losses) included in Net Loss....        2,484            (3,768)               --             (1,284)
                                                      ------------      ------------     -------------     --------------
                                                                                   
Comprehensive loss  ................................. $ (6,919,850)      $(7,874,987)     $(40,384,100)      $(74,475,746)
                                                      ============      ============     =============     ==============

            The accompanying notes are an integral part of the consolidated financial statements.
</TABLE>
                                                                                

                                       27
<PAGE>
 
                           BOSTON LIFE SCIENCES, INC.

                        (A DEVELOPMENT STAGE ENTERPRISE)

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

                                        
1. THE COMPANY AND ITS SIGNIFICANT ACCOUNTING POLICIES

  Boston Life Sciences, Inc. (the "Company"), founded in October 1992, is a
biotechnology company engaged in the research and development of novel
therapeutic and diagnostic products to treat chronic debilitating diseases such
as cancer, central nervous system disorders and autoimmune diseases. On June 15,
1995, Greenwich Pharmaceutical Incorporated ("Greenwich") acquired (the
"Merger") all of the outstanding capital stock of Boston Life Sciences, Inc.
("Old BLSI"). Effective June 15, 1995, the merged company was renamed "Boston
Life Sciences, Inc." (the "Company") and the management and Board of Directors
of Old BLSI assumed management of the Company.

  During the period from inception through December 31, 1998, the Company has
devoted substantially all of its efforts to business planning, raising
financing, consummating the merger with Greenwich, furthering the research and
development of its technologies, Therafectin related activities and corporate
partnering efforts. Accordingly, the Company is considered to be in the
development stage as defined in Statement of Financial Accounting Standards No.
7.

  A summary of the Company's significant accounting policies is as follows:


 Basis of Consolidation

  The Company's consolidated financial statements include the accounts of its
six subsidiaries where a majority of the operations are conducted. Five of these
subsidiaries, Ara Pharmaceutical, Inc., Acumed Pharmaceutical, Inc., Boston Life
Sciences International, Inc., Coda Pharmaceutical, Inc. and NeuroBiologics,
Inc., are wholly-owned. A minority shareholder owns 10% of the sixth subsidiary,
Procell Pharmaceutical, Inc. For the period from inception (October 16, 1992)
through December 31, 1998, each subsidiary has incurred losses, all of which are
included in the Company's consolidated statement of operations. All significant
intercompany transactions and balances have been eliminated.


 Cash, Cash Equivalents and Investments

  The Company considers all highly liquid investments purchased with an original
maturity of three months or less to be cash equivalents. The Company invests its
cash equivalents primarily in overnight repurchase agreements, money market
funds, and United States treasury and agency obligations. At December 31, 1998
and periodically throughout the year, the Company had cash balances at certain
financial institutions in excess of federally insured limits. However, the
Company does not believe that it is subject to any unusual credit risk beyond
the normal credit risk associated with commercial banking relationships.

  Investments, which are classified as available-for-sale, are recorded at fair
value.  Unrealized gains or losses are not immediately recognized in the
statement of operations but are reflected in the statement of comprehensive loss
and as a component of stockholders' equity until realized.   Investments consist
of United States treasury and agency bonds, and domestic and foreign corporate
bonds (Note 2). These investments are classified as a current asset because they
are highly liquid and are available, as required, to meet working capital and
other operating requirements.

  Other assets include approximately $160,000 invested in a certificate of
deposit.  In April 1997, the Company's primary banking institution loaned
$150,000 to an officer of the Company (the "Loan"). As a condition to and as
security for the Loan, the Bank requested that the Company pledge an amount
equal to the Loan to the Bank. Such funds, including the accumulated interest
thereon, will be held by the Bank in a restricted escrow account until the Loan
is repaid.

                                       28
<PAGE>
 
                           BOSTON LIFE SCIENCES, INC.

                        (A DEVELOPMENT STAGE ENTERPRISE)

            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)

                                        
 Financial Instruments

  Financial instruments which potentially subject the Company to concentrations 
of credit risk consist of cash equivalents and short term investments. The 
Company places its excess cash in marketable investment grade securities. There 
are no significant concentrations in any one issuer of debt securities. The 
Company places its cash, cash equivalents, and investments with financial 
institutions with high credit standing.

 Revenue Recognition and Concentration of Customers

  In June 1995, the Company entered into a research and development
collaboration agreement for a certain specified technology with a pharmaceutical
company. Under the terms of the agreement, which expired in June 1997, the
pharmaceutical company provided funds to support the research and development of
the specified technology. Payments received were recognized as revenue ratably
over the original term of the agreement which the Company believes corresponded
with the manner in which the work was performed.

 Fixed Assets

  Furniture and equipment are stated at cost. Depreciation is provided using the
straight-line method based on the estimated useful lives of the assets, and
further adjusted, as required, to their estimated net realizable value.

 Licensing Fees, Research and Development Expenses, Concentration of Outside
  Researchers, and Therafectin-related expenses

  The Company has entered into licensing agreements with certain institutions
that provide the Company with the rights to certain patents and technologies,
and the right to market and distribute any products developed. Obligations
initially incurred to acquire these rights are recognized and expensed on the
date that the Company acquires the rights.

  The Company has entered into sponsored research agreements with certain
institutions for the research and development of its licensed technologies.
Payments made under these sponsored research agreements are expensed ratably
over the term of the agreement which the Company believes corresponds with the
manner in which the work is performed.

  The Company currently conducts a substantial portion of its research and
development through a certain University and its affiliates pursuant to
sponsored research agreements. The majority of the Company's technologies
currently under development were invented or discovered by researchers working
for this University and its affiliates. A substantial portion of the Company's
research is thus dependent upon a continuing business relationship with this
University.

  Research and development activities cease when developmental work is
substantially complete and when the Company believes appropriate efficacy has
been demonstrated. In connection with its merger with Greenwich, the Company
acquired technology related to Therafectin, a treatment for rheumatoid
arthritis. Greenwich had previously conducted clinical trials which management
believes demonstrated the efficacy of the technology. Accordingly, costs related
to Therafectin have been separately stated in the consolidated statement of
operations.


 Acquired Technology

  In connection with the Merger, $3,500,000 of the purchase price was ascribed
to acquired technology. The Company assesses whether there has been impairment
whenever events or changes in circumstances indicate that any portion of the
carrying amount of the technology may not be recoverable. The Company evaluates
potential impairment by comparing anticipated undiscounted future net cash 
flows from expected product sales of the technology with its carrying value. The
factors considered by management in performing this assessment include the
expected cost to obtain product approval as well as the effects on expected
product sales of competition, demand, and other economic factors. At December
31, 1998, management believes that there has been no impairment in the value of
the technology.

                                       29
<PAGE>
 
                           BOSTON LIFE SCIENCES, INC.

                        (A DEVELOPMENT STAGE ENTERPRISE)

            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)

 Income Taxes

  The Company uses the liability method of accounting for income taxes. Under
this method, deferred tax assets and liabilities are recorded for the expected
future tax consequences of temporary differences between the financial statement
and tax bases of assets and liabilities. A valuation allowance is established to
reduce net deferred tax assets to the amount expected to be realized.


 Reverse Stock Split

   On June 6, 1997, the Company's stockholders approved a one-for-ten reverse
split of the common stock effective as of June 9, 1997.  All share and per share
amounts were retroactively restated to reflect the terms of the split.


 Net Loss Per Share

  Basic and diluted net loss per share available to common shareholders has been
calculated by dividing net loss, adjusted for preferred stock preferences, by
the weighted average number of common shares outstanding during the period. All
potential common shares have been excluded from the calculation of weighted
average common shares outstanding since their inclusion would be antidilutive.

  Stock options, preferred stock, and warrants to purchase 3,499,119, 3,304,489,
and 4,842,524 shares of common stock at prices ranging from $0.63 to $15.00 per
share were outstanding at December 31, 1998, 1997, and 1996, respectively, but
were not included in the computation of diluted net loss per common share
because they were antidilutive.  The aforementioned stock options, preferred
stock and warrants could potentially dilute earnings per share in the future.

 Accounting for Stock-Based Compensation

  The Company has elected to adopt the disclosure-only alternative permitted
under Statement of Financial Accounting Standards ("SFAS") No. 123, "Accounting
for Stock-Based Compensation" (Note 10).  The Company applies APB Opinion No. 25
"Accounting for Stock Issued to Employees" and related interpretations in
accounting for its stock-based compensation plans and related equity issuances.
Options and warrants issued to non-employees are subject to a fair value based
method of accounting under which compensation cost is generally recognized over
the vesting period based on the value of the award.  The value is determined
using the Black-Scholes pricing model and the resulting expense is recognized
over the vesting period.

 
 Preferred Stock

   The Company has, at certain times, issued preferred stock which was
convertible into common stock at a discount from the common stock market price
at the date of issuance.  The discounted amount associated with such conversion
rights represents an incremental yield, i.e. a "beneficial conversion feature,"
which is recognized as a return to the preferred shareholders.  Such amounts are
reported as preferred stock preferences in the statement of operations, and
represent a non-cash charge in the determination of net loss available to common
shareholders.

                                       30
<PAGE>
 
                           BOSTON LIFE SCIENCES, INC.

                        (A DEVELOPMENT STAGE ENTERPRISE)

            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)

 Use of Estimates

  The preparation of financial statements in conformity with generally accepted
accounting principles requires management to make estimates and assumptions that
affect the reported amounts of assets and liabilities, the disclosure of
contingent assets and liabilities at the date of the financial statements, and
the reported amounts of revenues and expenses for the periods presented. Actual
results could differ from those estimates.

 Risks and Uncertainties
 
  The Company is subject to risks and uncertainties common to the biotechnology
industry.  Such risks and uncertainties include, but are not limited to:  (i)
results from current and planned clinical trials, (ii) scientific data collected
on technologies currently in preclinical research and development, (iii)
decisions made by the Food and Drug Administration ("FDA") or other regulatory
bodies with respect to the initiation of human clinical trials and the
commercial sale of any proposed products, (iv) the Company's ability to obtain
the necessary patents and proprietary rights to effectively protect its
technologies, (v) the outcome of any current or future collaborations or
alliances with pharmaceutical or other biotechnology companies and universities,
and (vi) dependence on key personnel.

 Reclassifications

  Certain reclassifications have been made to the 1997 and 1996 financial
statements to conform to the 1998 presentation.

 Recent Accounting Pronoucements

  In June 1998, the FASB issued Statement of Financial Accounting Standards No.
133, "Accounting for Derivative Instruments and Hedging Activities," which
establishes accounting and reporting standards for derivative instruments and
hedging activities. It requires that an entity recognize all derivatives as
either assets or liabilities in the statement of financial position and measure
those instruments at fair value. The Company, to date, has not engaged in
derivative and hedging activities, and accordingly does not believe that the
adoption of SFAS No. 133 will have a material impact on the financial reporting
and related disclosures of the Company. The Company will adopt SFAS No. 133 as
required for its first quarterly filing of 2000.

  In June 1997, the FASB issued SFAS No. 130, "Reporting Comprehensive Income,"
which was adopted by the Company in the first quarter of fiscal 1998.  SFAS 130
establishes standards for reporting comprehensive income and its components in a
financial statement.  Comprehensive income as defined includes all changes in
equity (net assets) during a period from non-owner sources.  Examples of items
to be included in comprehensive income, which are excluded from net income,
include unrealized gains and losses on available-for-sale securities.
Accumulated other comprehensive income, as presented on the accompanying
consolidated balance sheets, consists of the net unrealized gains on available-
for-sale securities.

   In June 1997, the FASB issued SFAS No. 131, "Disclosures about Segments of an
Enterprise and Related Information" ("Statement No. 131"), effective for fiscal
years beginning after December 15, 1997.  Statement No. 131 establishes
standards for reporting information about operating segments in annual financial
statements and selected information about operating segments in interim
financial reports issued to stockholders.  The Company currently operates in
only one business segment.

                                       31
<PAGE>
 
                           BOSTON LIFE SCIENCES, INC.

                        (A DEVELOPMENT STAGE ENTERPRISE)

            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)

2. INVESTMENTS CONSIST OF THE FOLLOWING AT DECEMBER 31:

<TABLE>
<CAPTION>
                                                                                1998             1997
                                                                           ---------------  ---------------
<S>                                                                        <C>              <C>
   U.S. Treasury obligations...........................................                         $ 3,515,469
   U.S. Agency obligations.............................................         $7,084,374        6,002,267
   Corporate debt obligations..........................................            753,618        2,820,760
                                                                                ----------      -----------
                                                                                $7,837,992      $12,338,496
                                                                                ==========      ===========
</TABLE>

The contractual maturities of the Company's investments at December 31, 1998 are
as follows: less than one year--$1,433,242; one to five years--$1,683,599; six
to ten years--$4,013,120; ten to fifteen years--$708,031. Actual maturities may
differ from contractual maturities because the issuers of these securities may
have the right to prepay obligations without penalty. Gross unrealized gains and
(losses) at December 31, 1998 totaled $113,097 and ($36,894), respectively. Net
realized gains (losses), based on the specific identification method, totaled
$2,484 and ($3,768) in 1998 and 1997, respectively, and are included in interest
income in the statement of operations.

3. FIXED ASSETS CONSIST OF THE FOLLOWING AT DECEMBER 31:

<TABLE>
<CAPTION>
                                                                ESTIMATED    
                                                               USEFUL LIFE
                                                                 (YEARS)         1998          1997
                                                              -------------  ------------  ------------
<S>                                                           <C>            <C>           <C>
      Office furniture and equipment..........................     3-5           $112,006      $112,006
      Leasehold improvements..................................      3              59,424        59,424
      Computer equipment......................................     3-5             58,510        58,510
      Laboratory equipment....................................     3-5             33,018        33,018
                                                                                 --------      --------
                                                                                  262,958       262,958
      Less accumulated depreciation and amortization..........                    248,541       167,897
                                                                                 --------      --------
                                                                                 $ 14,417      $ 95,061
                                                                                 ========      ========
</TABLE>
                                                                                
   Depreciation expense on fixed assets for the years ended December 31, 1998,
1997 and 1996 was approximately $81,000 , $80,000, and $58,000, respectively,
and $249,000 for the period from inception (October 16, 1992) through December
31, 1998.

4. ACQUIRED TECHNOLOGY

   In connection with the Merger,  a $3.5 million asset was established
representing the appraised value assigned to Therafectin technology acquired
from Greenwich Pharmaceuticals.  The Company completed a Phase III clinical
trial for Therafectin in August 1997.  Based upon evaluation of all of the trial
data on Therafectin, including data from previous Greenwich trials, and the
advice obtained from a special panel of clinical rheumatologists, the Company
filed an amendment, on June 30, 1998, to the previously filed New Drug
Application ("NDA") with the FDA seeking marketing approval for Therafectin. If
the Company is ultimately unsuccessful in obtaining regulatory approval for
Therafectin, the Company will be required to write off the $3.5 million asset
value attributable to Therafectin as reflected on the Company's balance sheet.

5. RESEARCH AND DEVELOPMENT AGREEMENT

   In June 1995, the Company entered into a research and development agreement
with a pharmaceutical company. Under the terms of the agreement, which expired
in June 1997, the pharmaceutical company provided funds to support the research
and development of one of the Company's technologies.  These funds were
recognized as revenue ratably over the term of the Agreement and totaled $83,060
and $200,000 during 1997 and 1996, respectively.

                                       32
<PAGE>
 
                           BOSTON LIFE SCIENCES, INC.

                        (A DEVELOPMENT STAGE ENTERPRISE)

            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
                                        

6. ACCOUNTS PAYABLE AND ACCRUED EXPENSES CONSIST OF THE FOLLOWING AT 
DECEMBER 31:

<TABLE>
<CAPTION>
                                                                           1998           1997
                                                                       -------------  ------------
<S>                                                                    <C>            <C>
      Accrued research and development.............................       $  600,000    $  449,000
      Accounts payable and other operating expenses................          448,558       613,897
      Accrued professional fees....................................          442,961       668,620
      Accrued Therafectin related..................................          210,000       203,293
      Accrued payroll related......................................           32,680        56,994
                                                                          ----------    ----------
                                                                           1,734,199    $1,991,804
                                                                          ==========    ==========
</TABLE>
                                                                                

7. NOTES PAYABLE AND DEBT

 7% Convertible Subordinated Debentures

   In December 1995, the Company issued, pursuant to an investment agreement
(the "Subscription Agreement") under Regulation S of the Securities Act of 1933,
an aggregate of $1 million of 7% convertible subordinated debentures maturing in
December 1997. The debentures were convertible, at the option of the holder,
into shares of common stock at sixty-five percent of the market price of the
common stock at the time of conversion. In addition, the Subscription Agreement
contained certain restrictions on the sale of common stock issued upon
conversion of the debentures. Because of the significant discount associated
with the conversion feature, an estimated value of approximately $411,000 was
ascribed to such feature and was recorded as a debt discount and additional
paid-in capital. The debt discount was initially being amortized over the period
the debentures were expected to be outstanding. In February 1996, the holder
elected to convert all of the 7% convertible debentures into 156,605 shares of
common stock. Approximately $70,000 of the debt discount was amortized and
recognized as interest expense in 1996 prior to the conversion. The remaining
unamortized discount and related deferred financing fees were included in the
carrying amount of the debt which upon conversion was credited to additional
paid-in capital.

8. COMMON STOCK

 Common Stock Subject to Redemption

  In September and November 1995, the Company sold, pursuant to investment
agreements (each, individually, the "September Investment Agreements" and the
"November Investment Agreements") under Regulation S of the Securities Act of
1933, an aggregate of approximately 320,000 shares of common stock resulting in
net proceeds of approximately $1.8 million. Both agreements provided that, based
upon the average price of the Company's common stock through June 1996 and July
1996 for the September Investment Agreements and the November Investment
Agreements, respectively, (i) the Company was contingently obligated to issue
additional shares of common stock to the investors, (ii) such investors were
contingently obligated to make additional payments to the Company for shares
purchased, and (iii) the Company was contingently obligated to make repayment to
such investors for certain amounts of the investment. Until the circumstances
providing for the possible repayment by the Company of certain amounts of the
equity investment no longer existed, the portion of the net proceeds which the
Company was contingently obligated to repay was classified as common stock
subject to redemption on the Company's balance sheet. The portion of the equity
investment that was no longer subject to possible repayment was reclassified to
stockholders' equity upon the expiration of the valuation periods as defined in
the investment agreements.

                                       33
<PAGE>
 
                           BOSTON LIFE SCIENCES, INC.

                        (A DEVELOPMENT STAGE ENTERPRISE)

            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
                                        
  In December 1995, $175,000 of the net proceeds subject to redemption was
reclassified to equity concurrent with the expiration of the first valuation
period. During 1997 and 1996, the Company received approximately $29,000 and
$135,000, respectively, in additional payments from the investors based upon the
average price of the Company's common stock for certain periods specified in the
agreements. Also in 1996, the amount of $1,630,000 previously classified as
common stock subject to redemption was reclassified to stockholders' equity.
 
 Common Stock Issuances

  In June 1996, the Company completed a private placement of 500,000 shares of
common stock which raised approximately $5 million in net proceeds. In
connection with this financing, the Company issued to the placement agent, as
payment for its services, 47,274 shares of common stock and warrants to purchase
54,727 shares at a price of $11.00 per share (Note 10).

   In February 1999, the Company completed a private placement of 647,668 shares
of common stock which raised approximately $2.5 million in gross proceeds.  The
investor also received warrants to purchase 97,150 shares of common stock at a
price of $4.81 per share.  The Company is obligated to issue additional shares
to the investor if the Company issues common stock in a capital raising
transaction at a price per share less than that paid by the investor.  Certain
issuances, including those related to the exercise of outstanding warrants and
options, are not subject to this provision which expires in October 2002.

9. PREFERRED STOCK

  The Company has authorized 1,000,000 shares of preferred stock of which
264,000 shares have been designated as Series A Convertible Preferred Stock. In
February 1999, the Company designated 475,000 shares as Series B Convertible
Preferred Stock, which it subsequently decreased to 227,719 shares.  In February
1999, the Company designated 475,000 shares as Series C Convertible Preferred
Stock.  The remaining authorized shares have not been designated.

  1996 Issuance

  In January and February 1996, the Company raised, through a private placement
of its securities, net proceeds of approximately $20.6 million, net of
approximately $3.4 million of issuance costs. In connection with the private
placement, the Company issued (i) 239,910 shares of Series A Convertible
Preferred Stock and (ii) granted warrants to purchase 599,775 shares of common
stock at $6.71 per share (Note 10). The warrants may be redeemed at the election
of the Company, in whole but not in part, under certain conditions as defined in
the warrant agreements. In connection with this financing, the Company granted
to the placement agent, a related party (Note 13), options to acquire 23.991
units with each unit consisting of 1,000 shares of Series A Convertible
Preferred stock and warrants to purchase 2,500 shares of common stock at a unit
exercise price of $110,000.  

  Each share of the Series A Convertible Preferred Stock is convertible at any
time at the option of the holder into shares of common stock pursuant to a ratio
of 17.53771 shares of common stock for each share of Series A Convertible
Preferred Stock.  The Company may, under certain conditions defined in the
preferred stock agreement, cause the conversion of the preferred stock, in whole
or in part, into common stock.  The Company issued 199,509, 1,845,634 and
1,864,276 shares of common stock during 1998, 1997 and 1996, respectively,
related to the conversion of 11,376, 105,238 and 106,301 shares of preferred
stock, respectively.  The preferred stock had a beneficial conversion feature
which allowed the holders to convert their shares into common stock at a
discount to the market price. The intrinsic value of the beneficial conversion
feature totaled $34,387,953 which was included in calculating the net loss
available to common shareholders for the year ended December 31, 1996.

                                       34
<PAGE>
 
                           BOSTON LIFE SCIENCES, INC.

                        (A DEVELOPMENT STAGE ENTERPRISE)

            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)

  1999 Issuance

  In February 1999, the Company completed a private placement of Series C
Convertible Preferred Stock ("Series C Stock") which raised proceeds of
approximately $5.7 million, net of approximately $0.5 million of issuance costs.
In connection with the financing, the Company issued (i) 315,416 shares of
Series C Stock and (ii) 569,248 warrants to purchase common stock at $5.06 per
share and 219,234 warrants to purchase common stock at $6.09 per share. In
connection with this financing, the Company paid $372,725 to the placement agent
and issued 166,948 warrants to purchase common stock at $5.06 per share and
54,808 warrants to purchase common stock at $6.09 per share to the placement
agent.

  Subsequent to an initial closing of the private placement, which consisted of
Series B Convertible Preferred Stock, ("Series B Stock"), it was determined that
a certain agreed upon provision had not been included in the Certificate of
Designation defining the rights, preferences and other provisions of the Series
B Stock.  As a result, the investors participating in the initial closing
exchanged their shares of Series B Stock for an equal number of shares of Series
C Stock whose Certificate of Designation includes the previously omitted
provision.  Investors participating in the second and final closing were
directly issued Series C Stock.

  Each share of the Series C Stock is convertible at any time at the option of
the holder into shares of common stock pursuant to a ratio of five shares of
common stock for each share of Series C Stock. The Company may be required to
issue up to one additional share of common stock for each share of common stock
underlying Series C Stock still held by an investor on the date that is 270 days
after the closing, if the market price of the common stock is below a specified
level on such date.  However, the investor's right to receive additional shares
terminates if the market price of the common stock is above a specified level
for a certain period, as defined.  The initial conversion price of the Series C
Stock was at a discount to the market price on the date of issuance and the
terms provide for a minimum return of 25%.  The intrinsic value of this
beneficial conversion of approximately $1.9 million will be recognized as a
preferred stock preference in the statement of operations in 1999, and will
represent a non-cash charge in the determination of net loss available to common
shareholders.  The net proceeds of $5.7 million will be allocated between the
warrants and the Series C Stock based on their relative fair values.  Because
the redemption of the Series C Stock is not within the control of the Company,
the amount allocated to the Series C Stock will be reflected outside of
stockholders' equity as "mezzanine" financing.  The amount allocated to the
warrants will be credited to additional paid-in capital.

                                        
10. STOCK OPTIONS AND WARRANTS

 Omnibus Plans

  The Amended and Restated Omnibus Stock Option Plan allows for the issuance of
options to purchase up to 1,200,000 shares of the Company's common stock through
April 2005.  The 1998 Omnibus Plan, which was approved at the 1998 Annual
Meeting, provides for the issuance of options to purchase up to 500,000 shares
of the Company's common stock through April 2008.  Both plans provide for the
issuance of both nonqualified stock options and incentive stock options to
employees, officers, consultants and scientific advisors of the Company. The
Company's Board of Directors determines the term of each option, vesting
provisions, option price, number of shares for which each option is granted and
the rate at which each option is exercisable. The term of each option cannot
exceed ten years. The exercise price of incentive stock options shall not be
less than the fair market value of the Company's common stock on the date of
grant. Nonqualified stock options may be issued under the Omnibus Plan at an
option price determined by the Board of Directors which shall not be less than
50% of the fair market value of the Company's common stock on the date of grant.

  In 1996, the Company granted, in recognition of services to be performed by
certain employees, consultants and scientific advisors, non-qualified stock
options under the Omnibus Plan.  The total fair value of approximately $274,000
and $236,000 ascribed to the options granted in 1996 and 1995, respectively, was
recorded as deferred compensation and was charged to operations over the vesting
period of the options which management believed fairly approximates the service
period.  The charge to operations for the years ended December 31, 1997 and 1996
totaled approximately $182,000 and $292,000, respectively.
 

                                       35
<PAGE>
 
  Directors' Plan

  The Directors' Plan allows for the issuance of up to 450,000 shares of the
Company's common stock through April 2005. The Director's Plan provides for an
automatic yearly grant of options to all non-employee directors of up to 2,500
options. Non-qualified stock options granted under the Directors' Plan generally
vest 75% six months from the grant date and the remaining 25% on the later of
six months from the date of grant or December 31st of the year of grant, and
have an exercise price equivalent to 20% of the quoted market price of the
Company's common stock on the date of grant. For new non-employee Directors, the
Directors' Plan also provides for the one-time issuance of options to purchase
7,500 shares of the Company's common stock at fair market value at the time of
grant with such options vesting over a period of four years. During 1996, the
Directors' Plan was amended to provide for the granting of additional options at
the discretion of the Board of Directors. During 1998, the Directors' Plan was
amended to provide for the granting of options to employees of the Company.  All
options granted under the Directors' Plan have a term of ten years. Compensation
expense related to the intrinsic value of options issued in 1998, 1997 and 1996
totaled approximately $19,000, $18,000 and $98,000, respectively.

 Stock-Based Compensation

  If the Company had valued awards to qualified employees using the fair value
methodology prescribed by  SFAS 123, the Company's net loss and basic and
diluted net loss per share would have equaled the pro forma amounts indicated
below. Net loss and net loss per share for 1996 (as reported and pro forma) 
include preferred stock preferences.

<TABLE>
<CAPTION>
                                                                         1998               1997                1996
                                                                   -----------------  -----------------  -------------------
<S>                                                               <C>                 <C>                <C>
Net loss available to common shareholders....................
 As reported.................................................           $(6,897,024)       $(7,974,016)        $(40,384,100)
 Pro forma...................................................           $(7,900,270)       $(8,711,431)        $(40,895,329)
 
Basic and diluted loss per share available to common
 shareholders................................................
 As reported.................................................           $     (0.52)       $     (0.64)        $      (4.09)
 Pro forma...................................................           $     (0.60)       $     (0.70)        $      (4.14)
</TABLE>

  The fair value of each option grant was estimated on the date of the grant
using the Black-Scholes option-pricing model with the following assumptions:
dividend yield of zero percent; expected volatility of 80 percent; risk-free
interest rates, based on the date of grant, ranging from 4.61% to 6.46%; and
expected lives of 5 years.

  A summary of the status of the Company's stock option plans as of December 31,
1998, 1997, and 1996 and changes during the years ending on those dates is
presented below. In January 1998, the Company issued 372,000 options to 
employees and directors at a price that was $0.13 less than the market price of 
the Company's stock on the date of grant, for which the Company recorded a 
non-cash charge of approximately $48,000. During 1998, the Company amended its 
Stock Option Plans to provide employees and directors with extended exercise 
rights upon termination subject to the option holder meeting certain 
requirements, including minimum terms of employment. In connection with these 
changes, the Company recorded a non-cash charge of approximately $410,000.

<TABLE>
<CAPTION>
                                                        1998                          1997                       1996
                                               ------------------------      ------------------------    ------------------------
                                                              Weighted-                    Weighted-                    Weighted-
                                                              Average                      Average                      Average
                                                              Exercise                     Exercise                     Exercise
                                                 Shares        Price           Shares       Price         Shares         Price
                                               ----------    ----------      ----------   -----------    ---------     ----------  
<S>                                            <C>           <C>             <C>         <C>             <C>           <C>
Outstanding at beginning of year.............  1,039,668      $4.33            716,008      $4.30          661,260       $ 2.30
Granted......................................    503,204       2.13            409,640       4.43          174,368         6.70
Exercised....................................    (10,770)      1.10            (28,280)      0.82          (92,830)        2.10
Forfeited and expired........................   (163,574)      2.69            (57,700)      7.03          (26,790)       19.10
                                               ---------                     ---------                     -------
Outstanding at end of year...................  1,368,528       3.74          1,039,668       4.33          716,008         4.30
                                               =========                     =========                     =======
Options exercisable at year-end..............  1,077,212       3.72            690,720       4.12          475,577         3.70
                                               =========                     =========                     =======
Weighted-average fair value of options granted
  during the year............................                 $1.46                         $3.07                        $ 5.70
</TABLE>

The following table summarizes information about stock options outstanding at
December 31, 1998:

<TABLE>
<CAPTION>
                                                           Options Outstanding                    Options Exercisable
                                               -------------------------------------------  --------------------------------
                                                               Weighted-
                                                                Average        Weighted-                         Weighted-
                                                               Remaining        Average          Number           Average
   Range of                                      Number       Contractual      Exercise        Exercisable       Exercise
Exercise Prices                                Outstanding       Life            Price         at 12/31/98         Price
- ---------------------------------------------  -----------  ---------------  -------------  -----------------  -------------
<S>                                            <C>          <C>              <C>            <C>                <C>
$.63--$2.20..................................      672,053     7.8 years           $1.60            574,428          $1.50
$4.47........................................      380,400     8.6 years            4.47            201,934           4.47
$6.30--$9.40.................................      316,075     7.3 years            7.41            300,850           7.44
                                                 ---------                                        ---------
                                                 1,368,528     7.9 years            3.74          1,077,212           3.72
                                                 =========                                        =========
</TABLE>
                                         
  At December 31, 1998, 612,025 shares are available for grant under the
Company's Option Plans.

                                       36
<PAGE>
 
                           BOSTON LIFE SCIENCES, INC.

                        (A DEVELOPMENT STAGE ENTERPRISE)

            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
Warrants
 
  In January and February 1996, the Company granted 659,955 warrants in
connection with a private placement of its Series A Preferred Stock (Notes 9 and
13).  In June 1996, the Company granted 54,727 warrants in connection with a
private placement of its common stock (Note 8). In September 1996, the Company
issued 5,000 warrants to its public relations advisor as partial compensation
for its services.

  In January 1997, the Company issued 20,000 warrants pursuant to a letter
agreement between the Company and a shareholder.
 
  In January 1998, the Company issued 225,000 warrants to a financial advisor
which represented a substantial portion of the compensation paid by the Company
for the advisor's services.  The Company recorded a non-cash charge of
approximately $290,000 representing the fair value of the warrants at the date
of issuance.

 At December 31, 1998, warrants outstanding were as follows:

<TABLE>
<CAPTION>
                                             Exercise          Warrants
Date                                           Price          Outstanding        Expiration
of Issue                                    per Share        at 12/31/98            Date        
- --------                                    ---------        -----------            ----
<S>                                    <C>                  <C>                  <C>
January 1998..........................     $2.13 - $4.00        225,000           January 2003
January 1997..........................             15.00         20,000           January 2007
September 1996........................              6.30          5,000           September 2006
June 1996.............................             11.00         54,727           June 2006
February 1996.........................              6.70        639,603           February 2006
December 1995.........................              3.50         23,175           December 2000
August 1995...........................              6.81         25,226           July 2005
June 1995.............................       .13 -  9.41         94,590           March 2000
June 1995.............................              2.29         47,674           July 1999
June 1995.............................      1.50 -  8.78        697,535           March 2000
                                                              ---------
                                                              1,832,530
                                                              =========
</TABLE>
                                                                                
  Each warrant is exercisable into one share of common stock. The Company has
reserved sufficient shares of common stock to meet its stock option and warrant
obligations. A total of 54,917 warrants were exercised in 1998.

                                       37
<PAGE>
 
                           BOSTON LIFE SCIENCES, INC.

                        (A DEVELOPMENT STAGE ENTERPRISE)

            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)

                                        
 Stockholder Rights Plan

  On September 29, 1991, the Board of Directors of Greenwich adopted a
Stockholder Rights Plan (the "Rights Plan"), which was amended during 1994 and
1993 and adopted by the Company in connection with the Merger. Under the Rights
Plan, stockholders received as a dividend, for each share of common stock owned
by them, one right (the "Right") to purchase a fractional share of a new class
of preferred stock. With certain exceptions, if a person or group (the
"Acquirer") acquires 15 percent (the "trigger point") or more of the outstanding
shares of the Company's common stock, the Rights will separate from the shares
of common stock and become exercisable. Once the Rights are exercised, and in
certain circumstances if additional conditions are met, the Rights Plan allows
holders of the Rights (other than the Acquirer) to buy common stock of the
Company or the Acquirer at a substantial discount. The Rights dividend was
issued to stockholders of record on October 7, 1991. The Rights will expire in
ten years unless exercised by the holders or redeemed or exchanged by the
Company.


11. INCOME TAXES

     Income tax benefit consists of the following for the years ended December
  31:

<TABLE>
<CAPTION>
                                                                        1998                 1997                 1996
                                                                 -------------------  -------------------  ------------------
<S>                                                              <C>                  <C>                  <C>
      Federal...................................................        $ 2,326,000          $ 2,543,000         $ 2,139,000
      State.....................................................            794,000            1,346,000             680,000
                                                                        -----------          -----------         -----------
                                                                          3,120,000            3,889,000           2,819,000
      Valuation allowance.......................................         (3,120,000)          (3,889,000)         (2,819,000)
                                                                                                                 -----------
                                                                        $        --          $        --         $        --
                                                                        ===========          ===========         ===========
</TABLE>
                                                                                
Deferred tax assets (liabilities) consist of the following at December 31:

<TABLE>
<CAPTION>
                                                                               1998                 1997
                                                                        -------------------  -------------------
<S>                                                                     <C>                  <C>
      Net operating loss carryforwards..............................          $ 19,676,000         $ 15,817,000
      Capitalized research and development expenses.................             2,812,000            3,637,000
      Research and development credit carryforwards.................               961,000              717,000
      Other.........................................................               616,000              774,000
                                                                              ------------         ------------
      Gross deferred tax assets.....................................            24,065,000           20,945,000
      Acquired technology...........................................            (1,435,000)          (1,435,000)
                                                                              ------------         ------------
      Net deferred tax assets.......................................            22,630,000           19,510,000
      Valuation allowance...........................................           (22,630,000)         (19,510,000)
                                                                              ------------         ------------
                                                                              $         --         $         --
                                                                              ============         ============
</TABLE>
                                                                                
  The Company has provided a full valuation allowance for its deferred tax
assets since it is more likely than not that the future benefits related to
these assets will not be realized. In the event the Company achieves
profitability, these deferred tax assets will be available to offset future
income tax liabilities and expense. Approximately $7 million of the valuation
allowance at December 31, 1998 relates to deferred tax assets acquired in the
merger with Greenwich. If the valuation allowance related to these assets is
released, the credits will first be recorded to reduce the carrying value, if
any, of acquired technology purchased in the Merger.

                                       38
<PAGE>
 
                           BOSTON LIFE SCIENCES, INC.

                        (A DEVELOPMENT STAGE ENTERPRISE)

            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)

                                        
  A reconciliation between the amount of reported tax benefit and the amount
computed using the U.S. Federal statutory rate of 35% for the year ended
December 31 is as follows:

<TABLE>
<CAPTION>
                                                                        1998              1997              1996
                                                                  ----------------  ----------------  ----------------
<S>                                                               <C>               <C>               <C>
  Benefit at statutory rate....................................       $(2,417,000)      $(2,825,000)      $(2,099,000)
  State taxes, net of federal benefit..........................          (504,000)         (587,000)         (420,000)
  Research and development credit..............................          (180,000)         (206,000)          (72,000)
  Other........................................................           (19,000)         (271,000)         (228,000)
                                                                      -----------       -----------       -----------
                                                                       (3,120,000)       (3,889,000)       (2,819,000)
  Benefit of loss not recognized, increase in valuation 
    allowance..................................................         3,120,000         3,889,000         2,819,000
                                                                      -----------       -----------       -----------
                                                                      $        --       $        --       $        --
                                                                      ===========       ===========       ===========
</TABLE>
                                                                                
  As of December 31, 1998, the Company has federal net operating loss
carryforwards of $47,907,000 which expire beginning in 2007 and ending in 2019.
In addition, the Company has federal and state research and development credits
of $656,000 and $445,000, respectively, which expire beginning in 2007 and 1999,
respectively, and ending in 2019 and 2004, respectively.  These net operating
loss carryforwards and research and development credits may be used to offset
future federal and state taxable income and tax liabilities. A portion of the
net operating loss carryforwards totaling approximately $864,000 relates to
deductions for the exercise of non-qualified options and will be credited to
additional paid-in capital upon realization.

  In connection with the Merger, the Company acquired approximately $90 million
of net operating loss carryforwards of which approximately $11.6 million can be
utilized by the Company under the ownership change provisions of the Internal
Revenue Code. These net operating losses, which expire in 2009 and 2010, cannot
offset the taxable income of any of the subsidiaries of the Company. In
addition, ownership changes resulting from the Company's issuance of common
stock may limit the amount of net operating loss and tax credit carryforwards
that can be utilized annually to offset future taxable income. The amount of the
annual limitation is determined based upon the Company's value immediately prior
to the ownership change. Subsequent significant changes in ownership could
further affect the limitation in future years.

12. COMMITMENTS AND CONTINGENCIES

 Operating Leases

  The Company leases certain office equipment and its office space and warehouse
facilities under noncancelable operating leases. Terms of the lease for office
space include a renewal option of three years. Approximate future minimum lease
commitments at December 31, 1998 are as follows: 1999--$62,000 and 2000--$5,000.

  Total rent expense under noncancelable operating leases was approximately
$124,000, $131,000, and $100,000 during the years ended December 31, 1998, 1997,
and 1996, respectively, and approximately $481,000 for the period from inception
(October 16, 1992) through December 31, 1998.

 Sponsored Research and Development, and Consulting Agreements

  Pursuant to noncancellable sponsored research and development agreements and
consulting agreements, the Company is committed to make payments totaling
approximately $1.2 million in 1999.

 Litigation

  The Company is subject to legal proceedings in the normal course of business.
Management believes that these proceedings will not have a material adverse
effect on the consolidated financial statements.

                                       39
<PAGE>
 
                           BOSTON LIFE SCIENCES, INC.

                        (A DEVELOPMENT STAGE ENTERPRISE)

            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
                                        

13. RELATED PARTY TRANSACTIONS
 
 Placement Agent Fees and Service Agreements

  The Chief Executive Officer and sole stockholder of the placement agent
("Principal Agent") involved with a significant portion of the Company's equity
and debt financings through December 31, 1998 was previously a significant
common stockholder of the Company.

  In connection with the Company's 1996 private placement of Series A
Convertible Preferred Stock (Note 9), the Principal Agent received options to
acquire 23.991 units.  Each unit consists of 1,000 shares of Series A
Convertible Preferred Stock and warrants to purchase 2,500 shares of common
stock at a unit exercise price of $110,000.

  In August 1995, the Company entered into a two-year financial advisory
services agreement with the Principal Agent.  In connection with the agreement,
the Company issued warrants to the Principal Agent for the purchase of 25,000
shares of the Company's common stock (Note 10).  This agreement expired in 1997.

  In February 1996, the Company entered into a two-year agreement under which
the Principal Agent received a monthly retainer fee of $2,500 per month.  This
agreement expired in January 1998.

 Loan to Officer

  In April 1997, the Bank loaned $150,000 to Dr. Lanser, the Company's Executive
Vice President and Chief Scientific Officer (the "Loan").  The Loan bears
interest at prime and matures in its entirety in September 1999.  As a condition
to and as security for the Loan, the Bank requested that the Company pledge to
the Bank a certificate of deposit in the amount of $155,000 (the "Company
Pledge").  In recognition of Dr. Lanser's past and expected future contributions
to the Company and as an additional motivation and incentive to Dr. Lanser,
which the Company's Board of Directors determined would reasonably benefit the
Company, the Company agreed to provide the Company Pledge.  As security for the
Company, however, in the event Dr. Lanser defaults on the Loan and the Bank
forecloses on the Company Pledge, Dr. Lanser has executed and delivered to the
Company his contingent note in the amount of $150,000, bearing interest
identical to the Loan (the "Contingent Note") and a perfected pledge of 50,000
shares of Common Stock of the Company which he beneficially owns.  The Company
will demand payment of the Contingent Note only in the event that the Bank
forecloses on the Company Pledge as a result of Dr. Lanser's defaulting on his
payment of the Loan.


ITEM 9. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND
FINANCIAL DISCLOSURE.

  Not applicable.

                                       40
<PAGE>
 
                                    PART III

ITEM 10. DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT.

  The information required by this Item 10, with respect to executive officers,
is hereby incorporated by reference to the text appearing under Part 1, Item 4A
under the caption "Executive Officers of the Registrant" in this Report, and,
with respect to directors, by reference to the information included under the
headings "Information Regarding Directors", "Executive Officers", and "Section
16(a) Beneficial Ownership Reporting Compliance" in the Company's definitive
Proxy Statement for the 1999 Annual Meeting of Stockholders to be filed by the
Company with the Securities and Exchange Commission within 120 days after the
close of the Company's fiscal year.

ITEM 11. EXECUTIVE COMPENSATION.

  The information required by this Item 11 is hereby incorporated by reference
to the information under the heading "Executive Compensation" and "Report of
Compensation Committee on Executive Compensation" in the Company's definitive
Proxy Statement for the 1999 Annual Meeting of Stockholders to be filed with the
Securities and Exchange Commission within 120 days after the close of its fiscal
year.

ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT.

  The information required by this Item 12 is hereby incorporated by reference
to the information under the heading "Security Ownership of Principal
Stockholders and Management" in the Company's definitive Proxy Statement for the
1999 Annual Meeting of Stockholders to be filed with the Securities and Exchange
Commission within 120 days after the close of its fiscal year.

ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS.

  The information required by this Item 13 is hereby incorporated by reference
to the information under the heading "Certain Relationships and Related
Transactions" in the Company's definitive Proxy Statement for the 1999 Annual
Meeting of Stockholders to be filed with the Securities and Exchange Commission
within 120 days after the close of its fiscal year.

                                       41
<PAGE>
 
                                    PART IV

ITEM 14. EXHIBITS, FINANCIAL STATEMENT SCHEDULES, AND REPORTS ON FORM 8-K.

 (a)(1) Consolidated Financial Statements of the Company

        Financial Statements of the Registrant and Report of Independent

        Accountants thereon

        Consolidated Balance Sheets at December 31, 1998 and 1997

        Consolidated Statements of Operations for the fiscal years ended
        December 31, 1998, 1997 and 1996 and for the period from inception
        (October 16, 1992) through December 31, 1998

        Consolidated Statements of Stockholders' Equity (Deficit) for the
        fiscal years ended December 31, 1998, 1997 and 1996 and for the period
        from inception (October 16, 1992) through December 31, 1998

        Consolidated Statements of Cash Flows for the fiscal years ended
        December 31, 1998, 1997 and 1996, and for the period from inception
        (October 16, 1992) through December 31, 1998

        Consolidated Statements of Comprehensive Loss for the fiscal years ended
        December 31, 1998, 1997 and 1996, and for the period from inception
        (October 16, 1992) through December 31, 1998

        Notes to Consolidated Financial Statements

 (a)(2) Financial Statement Schedules

        Schedules are omitted since the required information is not applicable
        or is not present in amounts sufficient to require submission of the
        schedule, or because the information required is included in the
        Consolidated Financial Statements or Notes thereto.

 (a)(3)  Exhibits.

  The following exhibits are incorporated in this report by reference or
included and submitted with this report, as indicated.

<TABLE>    
<CAPTION>
   EXHIBIT #                                        DESCRIPTION AND METHOD OF FILING
- ----------------  -----------------------------------------------------------------------------------------------------
<C>               <S>
          2.1     Amended and Restated Agreement of Merger, dated as of December 29, 1994,
                  by and between the Company and Greenwich Pharmaceuticals Incorporated (1)
          2.2     Amendment No. 1 to Amended and Restated Agreement of Merger, dated as
                  of April 6, 1995, by and between the Company and Greenwich
                  Pharmaceuticals Incorporated (4)
          3.1     Amended and Restated Certificate of Incorporation, dated March 29, 1996, as amended on June 9, 1997,
                  and by the Certificate of Designations, Rights and Preferences of Series B Convertible Preferred
                  Stock filed on February 5, 1999, the Certificate of Decrease of Series B Convertible Preferred Stock
                  filed on February 18, 1999, and the Certificate of Designations, Rights and Preferences of Series C
                  Convertible Preferred Stock filed on February 18, 1999. (8)
          3.2     Amended and Restated By Laws, effective as of June 26, 1995 (5)
          4.1     Rights Agreement between the Company and Chemical Trust Group (formerly
                  Manufacturers Hanover Trust Company) as Rights Agent dated September 26,
                  1991 (2)
         10.1     Form of Indemnity Agreement to be entered into by the Company and its directors and officers (3)
         10.2     Boston Life Sciences, Inc. Amended and Restated Omnibus Stock Option Plan  (6)
         10.3     Boston Life Sciences, Inc. Amended and Restated 1990 Non-Employee Directors' Non Qualified Stock
                  Option Plan (6)
         10.4     Boston Life Science Inc. 1998 Omnibus Stock Option Plan (6)
         10.5     Purchase Agreement dated February 5, 1999 between the Tail Wind Fund, Ltd. ("Tail Wind") and the
                  Company. (7)
         10.6     The Registration Rights Agreement dated February 5, 1999 between Tail Wind and the Company. (7)
         10.7     Form of Subscription Agreement for Series B Preferred Stock. (7)
         10.8     Form of Exchange Agreement between the Company and Holders of Series B Preferred Stock (7)
         10.9     Supplement to Subscription Agreement for Series B Preferred Stock. (7)
         21.1     Subsidiaries of the Registrant (7)
         23.1     Consent of Independent Accountants (8)
         27.1     Financial Data Schedule (8)
</TABLE>     

                                       42
<PAGE>
     
(1) Incorporated by reference to Greenwich's Annual Report on Form 10-K for the
    year ended December 31, 1994
(2) Incorporated by reference to Greenwich's Current Report on Form 8-K dated
    September 26, 1991
(3) Incorporated by reference to Greenwich's proxy statement in connection with
    its 1987 Annual Meeting of Stockholders
(4) Incorporated by reference to the Registration Statement of Greenwich
    Pharmaceuticals Incorporated on Form S-4, Registration No. 33-91106
(5) Incorporated by reference to BLSI's Annual Report on Form 10-K for the year
    ended December 31, 1995
(6) Incorporated by reference to BLSI's proxy statement in connection with its
    1998 Annual Meeting of Stockholders
(7) Incorporated by reference to BLSI's Annual Report on Form 10-K for the year 
    ended December 31, 1998.
(8) Filed herewith
      
    (b)  REPORTS ON FORM 8-K: The Registrant filed the following Reports on Form
         8-K during the fourth quarter of 1998 and through March 11, 1999:

<TABLE>
<CAPTION>
                                                                                               Item
Date of Report                                                                               Reported
- -----------------------------------------------------------------------------------------  ------------
<S>                                                                                        <C>
November 3, 1998                                                                                5,7     
December 14, 1998                                                                               5,7     
January 26, 1999                                                                                5,7     
February 5, 1999                                                                                5,7     
February 16, 1999                                                                               5,7      
</TABLE>

                                       43
<PAGE>
 
                                   SIGNATURES
                                        
  Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange
Act of 1934, the Registrant has duly caused this report to be signed on its
behalf by the undersigned, thereunto duly authorized.

                                  Boston Life Sciences, Inc.
                                  (Registrant)


    
March 19, 1999                     By        /s/ s. David Hillson
                                      ---------------------------------------
                                                S. DAVID HILLSON
                                   Chairman, President & Chief Executive Officer

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

<TABLE>    
<CAPTION>
                         SIGNATURE                                          TITLE                          DATE
- -----------------------------------------------------------  ------------------------------------  ---------------------
<S>                                                          <C>                                   <C>
 /s/ S. David Hillson                                        Chairman, President & Chief              March 19, 1999
- ---------------------------------------                      Executive Officer
S. DAVID HILLSON                                             (Principal Executive
                                                             Officer)
 
 
 /s/ Marc E. Lanser, M.D.                                    Executive Vice President &               March 19, 1999
- ---------------------------------------                      Chief Scientific Officer
MARC E. LANSER, M.D.

 
 /s/ Joseph P. Hernon                                        Chief Financial Officer                  March 19, 1999
- ---------------------------------------                      (Principal Financial and
JOSEPH P. HERNON                                             Accounting Officer)
 
 
 /s/ Colin B. Bier, M.D.                                     Director                                 March 19, 1999
- ---------------------------------------
COLIN B. BIER, M.D. 
 

 /s/ Edson D. de Castro                                      Director                                 March 19, 1999
- ---------------------------------------
EDSON D. DE CASTRO
 

 /s/ Ira W. Lieberman, Ph.D.                                 Director                                 March 19, 1999
- ---------------------------------------
IRA W. LIEBERMAN, PH.D.

 
 /s/ E. Christopher Palmer                                   Director                                 March 19, 1999
- ---------------------------------------
E. CHRISTOPHER PALMER
 
 
 /s/ Adrian M. Gerber                                        Director                                 March 19, 1999
- ---------------------------------------
ADRIAN GERBER
</TABLE>     

                                       44
<PAGE>
 
                                 EXHIBIT INDEX

<TABLE>    
<CAPTION>
      EXHIBIT
      NUMBER                                        DESCRIPTION AND METHOD OF FILING                                    PAGE NUMBER
- --------------------  ------------------------------------------------------------------------------------------------  ------------

<C>                   <S>                                                                                               <C>
        2.1           Amended and Restated Agreement of Merger, dated as of December 29, 1994,
                      by and between the Company and Greenwich Pharmaceuticals Incorporated (1)
        2.2           Amendment No. 1 to Amended and Restated Agreement of Merger, dated as
                      of April 6, 1995, by and between the Company and Greenwich
                      Pharmaceuticals Incorporated (4)
        3.1           Amended and Restated Certificate of Incorporation, dated March 29, 1996, as amended on 
                      June 9, 1997, and by the Certificate of Designations, Rights and Preferences of 
                      Series B Convertible Preferred Stock filed on February 5, 1999, the Certificate of Decrease of 
                      Series B Convertible Preferred Stock filed on February 18, 1999, and the Certificate of 
                      Designations, Rights and Preferences of Series C Convertible Preferred Stock filed on 
                      February 18, 1999. (8)
        3.2           Amended and Restated By Laws, effective as of June 26, 1995 (5)
        4.1           Rights Agreement between the Company and Chemical Trust Group (formerly
                      Manufacturers Hanover Trust Company) as Rights Agent dated September 26, 1991 (2)
       10.1           Form of Indemnity Agreement to be entered into by the Company and its directors and officers (3)
       10.2           Boston Life Sciences, Inc. Amended and Restated Omnibus Stock Option Plan (6)
       10.3           Boston Life Sciences, Inc. Amended and Restated 1990 Non-Employee Directors' Non Qualified Stock
                      Option Plan  (6)
       10.4           Boston Life Sciences, Inc. 1998 Omnibus Stock Option Plan  (6)
       10.5           Purchase Agreement dated February 5, 1999 between the Tail Wind Fund, Ltd. ("Tail Wind") and the
                      Company. (7)
       10.6           The Registration Rights Agreement dated February 5, 1999 between Tail Wind and the Company. (7)
       10.7           Form of Subscription Agreement for Series B Preferred Stock. (7)
       10.8           Form of Exchange Agreement between the Company and Holders of Series B Preferred Stock (7)
       10.9           Supplement to Subscription Agreement for Series B Preferred Stock. (7)
       21.1           Subsidiaries of the Registrant (7)
       23.1           Consent of Independent Accountants (8)
       27.1           Financial Data Schedule (8)
- ---------------
</TABLE>
(1) Incorporated by reference to Greenwich's Annual Report on Form 10-K for the
    year ended December 31, 1994
(2) Incorporated by reference to Greenwich's Current Report on Form 8-K dated
    September 26, 1991
(3) Incorporated by reference to Greenwich's proxy statement in connection with
    its 1987 Annual Meeting of Stockholders
(4) Incorporated by reference to the Registration Statement of Greenwich
    Pharmaceuticals Incorporated on Form S-4, Registration No. 33-91106
(5) Incorporated by reference to BLSI's Annual Report on Form 10-K for the year
    ended December 31, 1995
(6) Incorporated by reference to BLSI's proxy statement in connection with its
    1998 Annual Meeting of Stockholders
(7) Incorporated by reference to BLSI's Annual Report on Form 10-K for the year
    ended December 31, 1998.
(8) Filed herewith
     

                                      45

<PAGE>
 
                                                                     EXHIBIT 3.1
 
               AMENDED AND RESTATED CERTIFICATE OF INCORPORATION

                                      OF

                          BOSTON LIFE SCIENCES, INC.


          Boston Life Sciences, Inc. (the "Corporation), a corporation organized
and existing under and by virtue of the General Corporation Law of the State of
Delaware, DOES HEREBY CERTIFY:

          1.   The name of the Corporation is Boston Life Sciences, Inc. (the
"Corporation"). The Corporation is the entity resulting from the merger of
Boston Life Sciences, Inc., a Massachusetts corporation, with and into Greenwich
Pharmaceuticals Incorporation, a Delaware corporation, on June 15, 1995. A
Certificate of Merger was filed with the Secretary of State of Delaware on that
date. The Corporation was originally incorporated on May 18, 1972 under the name
"Strategic Medical Research Corp."

          2.   This Amended and Restated Certificate of Incorporation amends and
restates the Restated Certificate of Incorporation to restate the certificate of
incorporation of the Corporation in its entirety in a single document.

          3.   The text of the Restated Certificate of Incorporation is further
amended and restated hereby to read as herein set forth in full:

                         "FIRST: The name of the corporation is Boston Life
               Sciences, Inc. (the "Corporation");

                         SECOND: Its registered office in the State of Delaware
               is to be located at 1209 Orange Street, Wilmington, Delaware
               19801, County of New Castle. The registered agent at such address
               is The Corporation Trust Company.

                         THIRD: The nature of the business and objects and
               purposes for which the Corporation is organized are:

                         (a)  To engage in research, exploration, laboratory,
                    and development work relating to any material, substance,
                    compound, or mixture now known or which may hereafter be
                    known, discovered, or developed, and to perfect, develop,
                    manufacture, use, apply, and generally to deal in and with
                    any such material, substance, compound, or mixture, and to
                    undertake, conduct, manage, assist, promote, and engage or
                    participate in every
<PAGE>
 
                    kind of research or scientific experimental, design, or
                    development work, including pure or basic research.

                         (b)  To engage in the general business of purchasing,
                    selling, licensing, distributing, developing, manufacturing
                    or marketing of medical and pharmaceutical products of any
                    kind whatsoever.

                         (c)  To purchase, acquire, own, hold, lease, mortgage,
                    encumber, sell and dispose of any and all kinds and
                    character of property, real, personal and mixed (the
                    foregoing particular enumeration in no sense being used by
                    way of exclusion or limitation) and while the owner thereof,
                    to exercise all the rights, powers and privileges of
                    ownership, including in the case of stocks and shares, the
                    rights to vote thereon.

                         (d)  To borrow and lend money, with or without
                    security, and to endorse or otherwise guarantee the
                    obligations of others.

                         (e)  To act as principal or agent for others and
                    receive compensation for all services which it may render in
                    the performance of its duties of an agency character.

                         (f)  To engage in any and all business activities and
                    pursuits as may be reasonably related to the foregoing.

                         (g)  As provided in Section 102(a)(3) of the General
                    Corporation Law of Delaware, to engage in any lawful act or
                    activity for which corporations may be organized under the
                    General Corporation Law of Delaware.

                         FOURTH:  The aggregate number of shares which the
               Corporation shall have authority to issue is 176,000,000 to be
               divided into (a) 175,000,000 shares of Common Stock, par value
               $.01 per share, (b) 1,000,000 shares of Preferred Stock, par
               value $.01 per share, of which 264,000 shares are designated as
               Series A Convertible Preferred Stock, par value $.01 per share,
               with the powers, preferences and other rights as described on
               Exhibit A attached hereto and made a part hereof.

                                       2
<PAGE>
 
                         The Board of Directors is hereby empowered to cause the
               Preferred Stock to be issued from time to time for such
               consideration as it may from time to time fix, and to cause such
               Preferred Stock to be issued in series with such voting powers,
               designations, preferences and relative, participating, optional
               or other special rights, if any, or the qualifications,
               limitations or restrictions thereof, as designated by the Board
               of Directors in the resolution providing for the issue of such
               series. Shares of Preferred Stock of any one series shall be
               identical in all respects.

                    FIFTH:  In furtherance and not in limitation of the power
          conferred by statute, the Board of Directors is expressly authorized
          to make, repeal, alter, amend and rescind the By-laws of the
          Corporation.

                                       3
<PAGE>
 
                    SIXTH:  No director of the Corporation shall be personally
          liable to the Corporation or any of its stockholders for monetary
          damages for breach of fiduciary duty as a director, except for
          liability (i) for any breach of the director's duty of loyalty to the
          Corporation or its stockholders, (ii) for acts or omissions not in
          good faith or which involve intentional misconduct or a knowing
          violation of law, (iii) under Section 174 of the Delaware General
          Corporation Law, as the same exists or hereafter may be amended, or
          (iv) for any transaction from which the director derived an improper
          personal benefit. If the Delaware General Corporation Law hereafter is
          amended to authorize the further elimination or limitation of the
          liability of directors, then the liability of a director of the
          Corporation, in addition to the limitation on personal liability
          provided herein, shall be limited to the fullest extent permitted by
          the amended Delaware General Corporation Law. Any repeal or
          modification of this paragraph by the stockholders of the Corporation
          shall be prospective only, and shall not adversely affect any
          limitation on the personal liability of a director of the Corporation
          existing at the time of such repeal or modification.

                    SEVENTH:  Any action required or permitted to be taken at
          any annual or special meeting of stockholders may be taken only upon
          the vote of the stockholders at an annual or special meeting duly
          called and may not be taken by written consent of the stockholders.
          Special meetings of the stockholders of the Corporation for any
          purpose or purposes may be called at any time by the Board of
          Directors, the Chairman of the Board of Directors or the President of
          the Corporation. Special meetings of the stockholders of the
          Corporation may not be called by any other person or persons.

                    EIGHTH:  This Amended and Restated Certificate of
          Incorporation may be amended by the affirmative vote of the majority
          of the shares entitled to vote on each such amendment."

          4.  This Amended and Restated Certificate of Incorporation was duly
adopted by the board of directors and by the stockholders in accordance with the
provisions of Sections 242 and 245 of the Delaware General Corporation Law.

          IN WITNESS WHEREOF, Boston Life Sciences, Inc. has caused this Amended
and Restated Certificate of Incorporation to be signed by the authorized officer
this 28th of March 1996.

ATTEST:                                           BOSTON LIFE SCIENCES, INC.

                                       4
<PAGE>
 
By: /s/ Philip M. Shapiro                    By: /s/ George Eldridge
   ----------------------                       --------------------
                                                 Vice-President, Corporate 
                                                 Development and Finance

                                       5
                                         
<PAGE>
 
                                   EXHIBIT A
                                   ---------

                     Series A Convertible Preferred Stock
                     ------------------------------------


        1.  Designation and Amount.  There shall be a series of Preferred Stock 
            ----------------------
designated as "Series A Convertible Preferred Stock" and the number of shares 
constituting such series shall be 264,000.  Such series is referred to herein as
the "Series A Convertible Preferred Stock".  Such number of shares may be 
increased or decreased by resolution of the Board of Directors of the 
Corporation; provided, however, that no decrease shall reduce the number of 
shares of Series A Convertible Preferred Stock to less than the number of shares
then issued and outstanding.

        2.  Dividends.  Subject to the prior and superior rights of the holders 
            ---------
of any shares of any series of Preferred Stock ranking and superior to the 
shares of Series A Convertible Preferred Stock with respect to dividends and 
distributions, the holders of shares of Series A Convertible Preferred Stock, 
shall be entitled to receive dividends and distributions, when, as and if 
declared by the Board of Directors out of funds legally available for such 
purpose.  If the Corporation declares a dividend





                           [CONTINUED ON NEXT PAGE]

* Copy of Exhibit A to the certificate of amendment


                                       6
<PAGE>
 
or distribution on the common stock, par value $.01 per share (the "Common 
Stock"), of the Corporation, the holders of shares of Series A Convertible 
Preferred Stock shall be entitled to receive for each share of Series A 
Convertible Preferred Stock a dividend or distribution in the amount of the 
dividend or distribution that would be received by a holder of the Common Stock 
into which such share of Series A Convertible Preferred Stock is convertible on 
the record date for such dividend or distribution. If the Corporation declares a
dividend or distribution on any other class or series of preferred stock, the 
holders of shares of Series A Convertible Preferred Stock shall be entitled to 
receive a dividend or distribution in an amount per share in proportion to the 
dividend or distribution declared on a share of such other class or series based
upon the liquidation preference of a share of the Series A Convertible Preferred
Stock relative to that of a share of such other class or series, unless the 
holders of at least 66-2/3% of the outstanding shares of Series A Convertible 
Preferred Stock consent otherwise. In any such case, the Corporation shall 
declare a dividend or distribution on the Series A Convertible Preferred Stock 
at the same time that it declares a dividend or distribution on the Common Stock
or such other class or series of preferred stock and shall establish the same 
record date for the dividend or distribution on the Series A Convertible 
Preferred Stock as is established for such dividend or distribution on the 
Common Stock or such other class or series of preferred stock. Each such 
dividend or distribution will be payable to holders of record of the Series A 
Convertible Preferred Stock as they appeared on the records of the Corporation 
at the close of business on the record date declared for such dividend or 
distribution, as shall be fixed by the Board of Directors. If the corporation 
declares or pays a dividend or distribution on the Series A Convertible 
Preferred Stock as a result of the declaration or payment of a dividend or 
distribution on the Common Stock or any other class or series of preferred stock
as described above, the holders of the Series A Convertible Preferred Stock 
shall not be entitled to any additional dividend or distribution solely because 
such first dividend or distribution also required the declaration or payment of 
a dividend or distribution on any other class or series of preferred stock. Any 
reference to "distribution" contained in this Section 2 shall not be deemed to 
include any distribution made in connection with any liquidation, dissolution or
winding up of the Corporation, whether voluntary or involuntary.

     3.  Liquidation Preference.  (a)  In the event of a (i) liquidation, 
         ----------------------
dissolution or winding up of the Corporation, whether voluntary or involuntary 
or (ii) a sale or other disposition of all or substantially all of the assets of
the Corporation (a "Liquidation Event"), after payment or provision for payment 
of debts and other liabilities of the Corporation, the holders of the Series A 
Convertible Preferred Stock then outstanding shall be entitled to be paid out of
the assets of the Corporation available for distribution to its shareholders, 
whether such assets are capital, surplus, or earnings, before any payment or 
declaration and setting apart for payment of any amount shall be made in respect
of the stock junior to the Series A Convertible Preferred Stock, an amount equal
to $130.00 per share plus an amount equal to all declared and unpaid dividends 
thereon. If upon any Liquidation Event, whether voluntary or involuntary, the 
assets to be distributed to holders of the Series A Convertible Preferred Stock 
shall be insufficient to permit the payment to such shareholders of the full 
preferential amounts aforesaid, then all of the assets of the Corporation to be 
distributed shall be so distributed ratably to the holders of the Series A 
Convertible Preferred Stock on the basis of the number of shares of Series A 
Convertible Preferred Stock held. A consolidation or merger of the Corporation 
with or into another corporation shall not be considered a liquidation, 
dissolution or winding up of the Corporation or a sale or other disposition of 
all or substantially all of the assets of the Corporation. All shares of Series 
A Convertible Preferred Stock shall rank as to payment upon the occurrence of 
any of the events described in clauses (i) and (ii) above senior to the Common 
Stock as provided herein and, unless the terms of such series shall provide 
otherwise, senior to all other series of the Corporation's preferred stock.

                                       7
<PAGE>
 
          (b)  After the payment or distribution to the holders of the Series A 
Preferred Stock of the full preferential amounts aforesaid, the holders of 
shares of the Common Stock and any other shares of participating preferred stock
then outstanding will be entitled to receive, pro rata an amount per share equal
                                              --- ----
to $13 plus accrued but unpaid dividends, if any, paid to the holders of the 
Series A Convertible Preferred Stock. After the payment or distribution pursuant
to the immediately preceding sentence, the holders of shares of the Series A 
Convertible Preferred Stock, the Common Stock and any other shares of 
participating preferred stock then outstanding will share any remaining assets 
of the Corporation on a pari passu, as converted basis. 
                        ---- -----

          4.   Conversion.
               ----------
 
          (a) Right of Conversion. The shares of Series A Convertible Preferred
              ------------------- 
Stock shall be convertible, in whole or in part, at the option of the holder
thereof and upon notice to the Corporation as set forth in paragraph (b) below,
into fully paid and nonassessable shares of Common Stock and such other
securities and property as hereinafter provided. The shares of Series A
Convertible Preferred Stock shall be convertible initially at the rate of
175.3771 shares of Common Stock for each full share of Series A Convertible
Preferred Stock and shall be subject to adjustment as provided herein. The
initial conversion price per share of Common Stock is $.5702 and shall be
subject to adjustment as provided herein. For purposes of this resolution, the
"conversion rate" applicable to a share of Series A Convertible Preferred Stock
shall be the number of shares of Common Stock and number or amount of any other
securities and property as hereinafter provided into which a share of Series A
Convertible Preferred Stock is then convertible and shall be determined by
dividing the then existing conversion price into $100.00.

          Subject to adjustment pursuant to the provisions of paragraph (c) 
below, in the event that the conversion price in effect at the time of each 
Interim Closing Date (as defined below) and the Final Closing Date (as defined 
below) is greater than 85% of the average closing bid price of the Common Stock 
for the thirty consecutive trading days immediately preceding (x) any interim 
closing date of the issuance and sale of the Series A Convertible Preferred
Stock (each an "Interim Closing Date") or (y) the final closing date of the
issuance and sale of the Series A Convertible Preferred Stock (the "Final
Closing Date"), then the conversion price shall be adjusted to equal the lesser
of any such average closing bid price. If there is any change in the conversion
price as a result of the preceding sentence, then the conversion rate shall be
changed accordingly, and shall be determined by dividing the new conversion
price into $100.00. The Corporation shall prepare a certificate signed by the
principal financial officer of the Corporation setting forth the conversion rate
as of the Final Closing Date, showing in reasonable detail the facts upon which
such conversion rate is based, and such certificate shall forthwith be filed
with the transfer agent of the Series A Convertible Preferred Stock.
Notwithstanding the provisions of subparagraph (vi) of paragraph (c) below, a
notice stating that the conversion rate has been adjusted pursuant to this
paragraph, or that no adjustment is necessary, and setting forth the conversion
rate in effect as of the Final Closing Date shall be mailed as promptly as
practicable after the Final Closing Date by the Corporation to all record
holders of Series A Convertible Preferred Stock at their last addresses as they
shall appear in the stock transfer books of the Corporation.

          Subject to adjustment pursuant to the provisions of paragraph (c) 
below, the conversion price in effect immediately prior to the date that is 12 
months after the Final Closing Date of the issuance and sale of the Series A 
Convertible Preferred Stock (the "Reset Date") shall be adjusted and reset 
effective as of the Reset Date if the average closing bid price of the Common 
Stock for the 30

                                       8
<PAGE>
 
consecutive trading days immediately preceding the Reset Date (the "12-Month 
Trading Price") is less than 130% of the then applicable conversion price (a 
"Reset Event"). Upon the occurrence of a Reset Event, the conversion price shall
be reduced to be equal to the greater of (A) the 12-Month Trading Price divided 
by 1.3, (B) 50% of the then applicable conversion price and (C) $.375 (subject 
to a proportional adjustment in the event of an adjustment to the conversion 
price pursuant to paragraph 4(c) below). If there is any change in the 
conversion price as a result of the preceding sentence, then the conversion rate
shall be changed accordingly, and shall be determined by dividing the new 
conversion price into $100.00. The Corporation shall prepare a certificate 
signed by the principal financial officer of the Corporation setting forth the 
conversion rate as of the Reset Date, showing in reasonable detail the facts 
upon which such conversion rate is based, and such certificate shall forthwith 
be filed with the transfer agent of the Series A Convertible Preferred Stock. 
Notwithstanding the provisions of subparagraph (vi) of paragraph (c) below, a 
notice stating that the conversion rate has been adjusted pursuant to this 
paragraph, or that no adjustment is necessary, and setting forth the conversion 
rate in effect as of the Reset Date shall be mailed as promptly as practicable 
after the Reset Date by the Corporation to all record holders of the Series A 
Convertible Preferred Stock at their last addresses as they shall appear in the 
stock transfer books of the Corporation.

          The "closing bid price" for each trading day shall be the reported 
closing bid price on the NASDAQ Small-Cap Market or the NASDAQ National Market 
System (collectively referred to as, "NASDAQ") or, if the Common Stock is not 
quoted on NASDAQ, on the principal national securities exchange on which the 
Common Stock is listed or admitted to trading (based on the aggregate dollar 
value of all securities listed or admitted to trading) or, if not listed or 
admitted to trading on any national securities exchange or quoted on NASDAQ, the
closing bid price in the over-the-counter market as furnished by any NASD member
firm selected from time to time by the Corporation for that purpose, or, if such
prices are not available, the fair market value set by, or in a manner 
established by, the Board of Directors of the Corporation in good faith. 
"Trading day" shall mean a day on which the national securities exchange or 
NASDAQ used to determine the closing bid price is open for the transaction of 
business or the reporting of trades or, if the closing bid price is not so 
determined, a day on which NASDAQ is open for the transaction of business.

          (b)   Conversion Procedures.  Any holder of shares of Series A 
                ---------------------
Convertible Preferred Stock desiring to convert such shares into Common Stock 
shall surrender the certificate or certificates evidencing such shares of Series
A Convertible Preferred Stock at the office of the transfer agent for the Series
A Convertible Preferred Stock, which certificate or certificates, if the 
Corporation shall so require, shall be duly endorsed to the Corporation or 
in blank, or accompanied by proper instruments of transfer to the Corporation or
in blank, accompanied by irrevocable written notice to the Corporation that the 
holder elects so to convert such shares of Series A Convertible Preferred Stock 
and specifying the name or names (with address) in which a certificate or 
certificates evidencing shares of Common Stock are to be issued. The Corporation
need not deem a notice of conversion to be received unless the holder complies 
with all the provisions hereof. The Corporation will instruct the transfer agent
(which may be the Corporation) to make a notation of the date that a notice of 
conversion is received, which date shall be deemed to be the date of receipt for
purposes hereof.

          The Corporation shall, as soon as practicable after such deposit of 
certificates evidencing shares of Series A Convertible Preferred Stock 
accompanied by the written notice and compliance with any other conditions
herein contained, deliver at such office of such transfer agent to the person
for whose account such share of Series A Convertible Preferred Stock were so
surrendered, or to the nominee or nominees of such person, certificates
evidencing the number of full shares of Common Stock to which such person shall
be entitled as aforesaid, together with a cash adjustment of any fraction of a



                                       9


         



<PAGE>
 
share as hereinafter provided. Subject to the following provisions of this 
paragraph, such conversion shall be deemed to have been made as of the date of 
such surrender of the shares of Series A Convertible Preferred Stock to be 
converted, and the person or persons entitled to receive the Common Stock 
deliverable upon conversion of such Series A Convertible Preferred Stock shall 
be treated for all purposes as the record holder or holders of such Common 
Stock on such date; provided, however, that the Corporation shall not be 
required to convert any shares of Series A Convertible Preferred Stock while the
stock transfer books of the Corporation are closed for any purpose, but the 
surrender of Series A Convertible Preferred Stock for conversion during any 
period while such books are so closed shall become effective for conversion 
immediately upon the reopening of such books as if the surrender had been made 
on the date of such reopening, and the conversion shall be at the conversion 
rate in effect on such date. No adjustments in respect of any dividends on 
shares surrendered for conversion or any dividend on the Common Stock issued 
upon conversion shall be made upon the conversion of any shares of Series A 
Convertible Preferred Stock.

          All notices of conversion shall be irrevocable; provided, however, 
that if the Corporation has sent notice of an event pursuant to Section 4(g) 
hereof, a holder of Series A Convertible Preferred Stock may, at its election, 
provide in its notice of conversion that the conversion of its shares of Series 
A Convertible Preferred Stock shall be contingent upon the occurrence of the 
record date or effectiveness of such event (as specified by such holder), 
provided that such notice of conversion is received by the Corporation prior to 
such record date or effective date, as the case may be.

          (c)  Certain Adjustments of Conversion Rate. In addition to adjustment
               --------------------------------------
pursuant to paragraph (a) above, the conversion rate (and the corresponding 
conversion price) shall be subject to adjustment from time to time as follows:

          (i)  In case the Corporation shall (A) pay a dividend in Common Stock 
     or make a distribution in Common Stock, (B) subdivide its outstanding 
     Common Stock, (C) combine its outstanding Common Stock into a smaller 
     number of shares of Common Stock or (D) issue by reclassification of its 
     Common Stock other securities of the Corporation, then in each such case
     the conversion rate in effect immediately prior thereto shall be adjusted
     so that the holder of any shares of Series A Convertible Preferred Stock
     thereafter surrendered for conversion shall be entitled to receive the kind
     and number of shares of Common Stock or other securities of the Corporation
     which such holder would have owned or would have been entitled to receive
     immediately after the happening of any of the events described above had
     such shares of Series A Convertible Preferred Stock been converted
     immediately prior to the happening of such event or any record date with
     respect thereto. Any adjustment made pursuant to this subparagraph (i)
     shall become effective immediately after the effective date of such event
     retroactive to the record date, if any, for such event.

          (ii)  In case the Corporation shall issue or sell Common Stock or 
     rights, options, warrants or other securities convertible into Common 
     Stock, excluding those rights, options, warrants or other securities 
     convertible into Common Stock already outstanding and disclosed in the 
     Offering Memorandum, at a price per share which is lower than both (A) the 
     then effective conversion price and (B) the closing bid price (as defined 
     in Section 4) for the trading day immediately prior to such record date 
     (the "Current Market Price"), then the conversion rate shall be determined 
     by multiplying the conversion rate theretofore in effect by a fraction, of 
     which the numerator shall be the number of shares of Common Stock 
     outstanding immediately prior to the issuance of such shares, rights, 
     options, warrants or convertible securities plus the number of additional
     shares of Common Stock offered for subscription or purchase, and of which
     the

                                      10

<PAGE>
 
denominator shall be the number of shares of Common Stock outstanding 
immediately prior to the issuance of such rights, options, warrants or 
convertible securities plus the number of shares which the aggregate offering 
price of the total number of shares offered would purchase at the then effective
conversion price. Such adjustment shall be made whenever such rights, options, 
warrants or convertible securities are issued, and shall become effective 
immediately and retroactive to the record date for the determination of 
stockholders entitled to receive such rights, options, warrants or convertible 
securities.

     (iii)  In case the Corporation shall distribute to all or substantially all
holders of its Common Stock evidences of its indebtedness or assets (excluding 
cash dividends or distributions out of earnings) or rights, options, warrants or
convertible securities containing the right to subscribe for or purchase Common 
Stock (excluding those referred to in subparagraph (ii) above), then in each 
case the conversion rate shall be determined by multiplying the conversion rate 
theretofore in effect by a fraction, of which the numerator shall be the then 
fair value as determined in good faith by the Corporation's Board of Directors 
on the date of such distribution, and of which the denominator shall be such 
fair value on such date minus the then fair value (as so determined) of the 
portion of the assets or evidences of indebtedness so distributed or of such 
subscription rights, options, warrants or convertible securities applicable to 
one share. Such adjustment shall be made whenever any such distribution is made 
and shall become effective on the date of distribution retroactive to the record
date for the determination of stockholders entitled to receive such 
distribution.

     (iv)   Upon the expiration of any rights, options, warrants or conversion 
privileges, if such shall not have been exercised, the conversion rate shall, 
upon such expiration, be readjusted and shall thereafter be such as it would 
have been had it been originally adjusted (or had the original adjustment not 
been required, as the case may be) on the basis of (A) the fact that Common 
Stock, if any, actually issued or sold upon the exercise of such rights, 
options, warrants or conversion privileges, and (B) the fact that such shares of
Common Stock, if any, were issued or sold for the consideration actually 
received by the Corporation upon such exercise plus the consideration, if any, 
actually received by the Corporation for the issuance, sale or grant of all such
rights, options, warrants or conversion privileges whether or not exercised.

     (v)    No adjustment in the conversion rate shall be required unless such 
adjustment would require an increase or decrease of at least 1% in such rate; 
provided, however, that the Corporation may make any such adjustment at its 
election; and provided, further, that any adjustments which by reason of this 
subparagraph (v) are not required to be made shall be carried forward and taken 
into account in any subsequent adjustment. All calculations under this Section 4
shall be made to the nearest cent or to the nearest one-hundredth of a share, as
the case may be.

     (vi)   Whenever the conversion rate is adjusted as provided in any 
provision of this Section 4;

            (A)  the Corporation shall compute (or may retain a firm of
     independent public accountants of recognized national standing (which may
     be any such firm regularly employed by the Corporation) to compute) the
     adjusted conversion rate in accordance with this Section 4 and shall
     prepare a certificate signed by the principal financial officer of the
     Corporation (or cause any such independent public accountants to execute a
     certificate) setting forth the adjusted conversion rate and showing in
     reasonable detail the



                                      11
<PAGE>
 
           facts upon which each adjustment is based, and such certificate shall
           forthwith be filed with the transfer agent of the Series A
           Convertible Preferred Stock; and

                 (B)   a notice stating that the conversion rate has been 
           adjusted and setting forth the adjusted conversion rate shall
           forthwith be required, and as soon as practicable after it is
           required, such notice shall be mailed by the Corporation to all
           record holders of Series A Convertible Preferred Stock at their last
           addresses as they shall appear in the stock transfer books of the
           Corporation.

           (vii) In the event that at any time, as a result of any adjustment 
     made pursuant to this Section 4, the holder of any shares of Series A
     Convertible Preferred Stock thereafter surrendered for conversion shall
     become entitled to receive any shares of the Corporation other than shares
     of Common stock or to receive any other securities, the number of such
     other shares or securities so receivable upon conversion of any share of
     Series A Convertible Preferred Stock shall be subject to adjustment from
     time to time in a manner and on terms as nearly equivalent as practicable
     to the provisions contained in this Section 4 with respect to the Common
     Stock.

           (d)   No fractional Shares.  No fractional shares or scrip 
                 --------------------
representing fractional shares of Common stock shall be issued upon conversion 
of Series A Convertible Preferred Stock.  If more than one certificate 
evidencing shares of Series A Convertible Preferred Stock shall be surrendered 
for conversion at one time by the same holder, the number of full shares 
issuable upon conversion thereof shall be computed on the basis of the aggregate
number of shares of Series A Convertible Preferred Stock so surrendered.  
Instead of any fractional share of Common stock which would otherwise be 
issuable upon conversion of any shares of Series A Convertible Preferred Stock, 
the Corporation shall pay a cash adjustment in respect of such fractional 
interest in an amount equal to the same fraction of the market price per share 
of Common Stock (which shall be the closing price as defined in Section 5) at 
the close of business on the day of conversion.

           (e)   Consolidation; Merger; Etc.  If the Corporation shall enter 
                 --------------------------
into any consolidation, merger, combination or other transaction in which shares
of Common Stock constituting in excess of 50% of the voting power of the
Corporation are exchanged for or changed into other stock or securities, cash
and/or any other property (a "Merger Transaction"), then in any such case the
shares of Series A Convertible Preferred Stock shall at the same time be
similarly exchanged or changed in an amount per share equal to (i) the
conversion rate in effect at such time multiplied by (ii) the aggregate fair
market value, as determined in good faith by the Board of Directors of the
Corporation, of stock, securities, cash and/or any other property (payable in
kind), as the case may be, into which or for which each share of Common stock is
changed or exchanged (the "Per Share Merger Consideration"); provided, however,
                                                             --------  -------
that if any stock of securities received in the Merger Transaction are traded on
a securities exchange or quotation system, the fair market value of such stock
or securities shall be the closing sales price of such stock or securities as
reported by the principal exchange or quotation system for such stock or
securities the business day immediately preceding the execution of the merger
agreement or other transaction agreement for such Merger Transaction, and if no
such trading market exists for such stock or securities, the aggregate fair
market value shall be as determined in good faith by the Board of Directors of
the Corporation; provided, further, however, that if any such Merger Transaction
                 --------  -------  -------
is effected on or before the Reset Date, and if the Per Share Merger
Consideration (assuming conversion of all outstanding convertible stock,
including the Series A Convertible Preferred Stock, at the conversion rate for
such stock in effect at the time of the execution and delivery of the merger
agreement relating to such Merger Transaction) is less than 130% of the then
applicable conversion price relating to the Series A Convertible Preferred
Stock, then the conversion price will be reduced to equal the greater of (x) the
Per Share

                                      12
<PAGE>
 
Merger Consideration divided by 1.3, (y) 50% of the then applicable conversion 
price and (z) $.375 (subject to a proportional adjustment in the event of an 
adjustment to the conversion price pursuant to paragraph 4(c) above).

                (f)     Reservation of Shares; Transfer Taxes; Etc.  The 
                        ------------------------------------------
Corporation shall at all times reserve and keep available, out of its authorized
unissued stock, solely for the purpose of effecting the conversion of the Series
A Convertible Preferred Stock, such number of shares of its Common Stock free of
preemptive rights as shall from time to time be sufficient to effect the 
conversion of all shares of Series A Convertible Preferred Stock from time to 
time outstanding.  The Corporation shall use its best efforts from time to time,
in accordance with the laws of the State of Delaware, to increase the authorized
number of shares of Common Stock if at any time the number of shares of Common 
Stock not outstanding shall not be sufficient to permit the conversion of all 
the then-outstanding shares of Series A Convertible Preferred Stock.

                The Corporation shall pay any and all issue or other taxes that
may be payable in respect of any issue or delivery of shares of Common Stock on
conversion of the Series A Convertible Preferred Stock. The Corporation shall
not, however, be required to pay any tax which may be payable in respect of any
transfer involved in the issue or delivery of Common Stock (or other securities
or assets) in a name other than that in which the shares of Series A Convertible
Preferred Stock so converted were registered, and no such issue or delivery
shall be made unless and until the person requesting such issue has paid to the
Corporation the amount of such tax or has established, to the satisfaction of
the Corporation, that such tax has been paid.

                Notwithstanding anything to the contrary herein, before taking 
any action that would cause an adjustment reducing the conversion rate or before
any such adjustment is made as a result of a Reset Event, in either event, such 
that the effective conversion price (for all purposes an amount equal to $100.00
divided by the conversion rate as in effect at such time) would be below the 
then par value of the Common Stock, the Corporation shall take any corporate 
action which may, in the opinion of its counsel, be necessary in order that the 
Corporation may validly and legally issue fully paid and nonassessable shares of
Common Stock at the conversion rate as so adjusted.

                (g)     Prior Notice of Certain Events. In case:
                        ------------------------------

                (i)     the Corporation shall declare any dividend (or any other
distribution) on its Common Stock; or

                (ii)    the Corporation shall authorize the granting to the 
holders of Common Stock of rights or warrants to subscribe for or purchase any 
shares of stock of any class or of any other rights or warrants; or

                (iii)   of any reclassification of Common Stock (other than a 
subdivision or combination of the outstanding Common Stock, or a change in par 
value, or from par value to no par value, or from no par value to par value), or
of any consolidation or merger to which the Corporation is a party and for which
approval of any stockholders of the Corporation shall be required, or of the 
sale or transfer of all or substantially all of the assets of the Corporation or
of any compulsory share exchange whereby the Common Stock is converted into 
other securities, cash or other property; or



                                      13
<PAGE>
 
         (iv)   of the voluntary or involuntary dissolution, liquidation or
winding up of the Corporation;

then the Corporation shall cause to be filed with the transfer agent for the 
Series A Convertible Preferred Stock, and shall cause to be mailed to the 
holders of record of the Series A Convertible Preferred Stock, at their last 
addresses as they shall appear upon the stock transfer books of the Corporation,
at least 10 days prior to the applicable record date hereinafter specified, a 
notice stating (x) the date on which a record (if any) is to be taken for the 
purpose of such dividend, distribution or granting of rights or warrants or, if 
a record is not to be taken, the date as of which the holders of Common Stock of
record to be entitled to such dividend, distribution, rights or warrants are to 
be determined and a  description of the cash, securities or other property to be
received by such holders upon such dividend, distribution or granting of rights 
or warrants or (y) the date on which such reclassification, consolidation, 
merger, sale, transfer, share exchange, dissolution, liquidation or winding up 
is expected to become effective, the date as of which it is expected that 
holders of Common Stock of record shall be entitled to exchange their shares of 
Common Stock for securities or other property deliverable upon such exchange, 
dissolution, liquidation or winding up and the consideration, including 
securities or other property, to be received by such holders upon such exchange;
provided, however, that no failure to mail such notice or any defect therein or 
in the mailing thereof shall affect the validity of the corporate action 
required to be specified in such notice.

         (h)    Other Changes in Conversion Rate.  The Corporation from time to 
                --------------------------------
time may increase the conversion rate by any amount for any period of time if
the period is at least 20 days and if the increase is irrevocable during the
period. Whenever the conversion rate is so increased, the Corporation shall mail
to holders of record of the Series A Convertible Preferred Stock a notice of the
increase at least 10 days before the date the increased conversion rate takes
effect, and such notice shall state the increased conversion rate and the period
it will be in effect.

         The Corporation may make such increases in the conversion rate, in 
addition to those required or allowed by this Section 4, as shall be determined 
by it, as evidence by a resolution of the Board of Directors, to be advisable in
order to  avoid or diminish any income tax to holders of Common Stock resulting 
from any dividend or distribution of stock or issuance or rights or warrants to 
purchase or subscribe for stock or from any event treated as such for income tax
purposes.

         (i)    Ambiguities/Errors. The Board of Directors of the Corporation 
                ------------------
shall have the power to resolve any ambiguity or correct any error in the 
provisions relating to the convertibility of the Series A Convertible Preferred 
Stock, and its actions in so doing shall be final and conclusive.

         5.     Mandatory Conversion at Option of Corporation. At any time on or
                ---------------------------------------------
after the Reset Date, the Corporation, as its option, may cause the Series A 
Convertible Preferred Stock to be converted in whole, or in part, on a pro rata 
                                                                       --- ----
basis, into fully paid and nonassessable shares of Common Stock and such other 
securities and property as herein provided if the closing price of the Common 
Stock shall have exceeded 150% of the then applicable conversion price for at
least 20 trading days in any 30 consecutive trading day period. Any shares of
Series A Convertible Preferred Stock so converted shall be treated as having
been surrendered by the holder thereof for conversion pursuant to Section 4 on
the date of such mandatory conversion (unless previously converted at the option
of the holder).

         No more than 60 nor less than 10 days prior to the date of any such 
mandatory conversion, notice by first class mail, postage prepaid, shall be 
given to the holders of record of the Series A Convertible Preferred Stock to be
converted, addressed to such holders at their last addresses 


                                      14

<PAGE>
 
as shown on the stock transfer books of the Corporation.  Each such notice shall
specify the date fixed for conversion, the place or places for surrender of 
shares of Series A Convertible Preferred Stock, and the then effective 
conversion rate pursuant to Section 4.

               The "closing price" for each trading day shall be the reported 
last sales price regular way or, in case no such reported sale takes place on 
such day, the average of the reported closing bid and asked prices regular way, 
in either case on the NASDAQ Small-Cap Market or the NASDAQ National Market 
System (collectively referred to as, "NASDAQ") or, if the Common Stock is not 
quoted on NASDAQ, on the principal national securities exchange on which the 
Common Stock is listed or admitted to trading (based on the aggregate dollar 
value of all securities listed or admitted to trading) or, if not listed or 
admitted to trading on any national securities exchange or quoted on NASDAQ, the
average of the closing bid and asked prices in the over-the-counter market as 
furnished by any NASD member firm selected from time to time by the Corporation 
for that purpose, or, if such prices are not available, the fair market value 
set by, or in a manner established by, the Board of Directors of the Corporation
in good faith.  "Trading day" shall have the meaning given in Section 4 hereof.

               Any notice which is mailed as herein provided shall be 
conclusively presumed to have been duly given by the Corporation on the date 
deposited in the mail, whether or not the holder of the Series A Convertible 
Preferred Stock receives such notice; and failure properly to give such notice 
by mail, or any defect in such notice, to the holders of the shares to be 
converted shall not affect the validity of the proceedings for the conversion of
any other shares of Series A Convertible Preferred Stock. On or after the date 
fixed for conversion as stated in such notice, each holder of shares called to 
be converted shall surrender the certificate evidencing such shares to the 
Corporation at the place designated in such notice for conversion.  
Notwithstanding that the certificates evidencing any shares properly called for
conversion shall not have been surrendered, the shares shall no longer be deemed
outstanding and all rights whatsoever with respect to the shares so called for 
conversion (except the right of the holders to convert such shares upon 
surrender of their certificates therefor) shall terminate.

               6.    Voting Rights.
                     -------------

               (a)   General.  Except as otherwise provided herein, in the 
                     -------
Amended and Restated Certificate of Incorporation or by law, the holders of 
shares of Series A Convertible Preferred Stock, the holders of shares of Common 
Stock and the holders of any other class or series of shares entitled to vote 
with the Common Stock shall vote together as one class on all matters submitted 
to a vote of stockholders of the Corporation.  In any such vote, each share of 
Series A Convertible Preferred Stock shall entitle the holder thereof to cast 
the number of votes equal to the number of votes which could be cast in such 
vote by a holder of the Common Stock into which such share of Series A 
Convertible Preferred Stock is convertible on the record date for such vote, or 
if no record date has been established, on the date such vote is taken.  Any 
shares of Series A Convertible Preferred Stock held by the Corporation or any 
entity controlled by the Corporation shall not have voting rights hereunder and 
shall not be counted in determining the presence of a quorum.

               (b)   Class Voting Rights.  In addition to any vote specified in
                     -------------------
paragraph (a) of this Section 6, so long as 50% of the shares of Series A 
Convertible Preferred Stock (including those shares of Series A Convertible 
Preferred Stock issued or issuable upon the exercise of the placement agent 
warrants issued in connection with the offer and sale of the Series A 
Convertible Preferred Stock) shall be outstanding, the Corporation shall not, 
without the affirmative vote or consent of the holders of at least 66-2/3% of 
all outstanding Series A Convertible Preferred Stock voting separately as a 
class, (i) amend, alter or repeal any provision of the Amended and Restated 
Certificate of Incorporation, as amended, or 



                                      15
<PAGE>
 
the Bylaws of the Corporation so as adversely to affect the relative rights, 
preferences, qualifications, limitations or restrictions of the Series A 
Convertible Preferred Stock, (ii) declare any dividend or distribution on the 
Common Stock or any other class or series of preferred stock or authorize the 
repurchase of any securities of the Corporation or (iii) authorize or issue, or 
increase the authorized amount of, any additional class or series of stock, or 
any security convertible into stock of such class or series, (A) ranking prior 
to, or on a parity with, the Series A Convertible Preferred Stock upon 
liquidation, dissolution or winding up of the Corporation or a sale of all or 
substantially all of the assets of the Corporation or (B) providing for the 
payment of any dividends or distributions. A class vote on the part of the 
Series A Convertible Preferred Stock shall, without limitation, specifically not
be deemed to be required (except as otherwise required by law or resolution of 
the Corporation's Board of Directors) in connection with: (a) the authorization,
issuance or increase in the authorized amount of Common Stock or of any shares 
of any other class or series of stock ranking junior to the Series A Convertible
Preferred Stock in respect of distributions upon liquidation, dissolution or 
winding up of the Corporation; (b) the authorization, issuance or increase in 
the amount of the Series A Convertible Preferred Stock or any bonds, mortgages, 
debentures or other obligations of the Corporation (other than bonds, mortgages,
debentures or other obligations convertible into or exchangeable for or having 
option rights to purchase any shares of stock of the Corporation the 
authorization issuance or increase in amount of which would require the consent 
of the holders of the Series A Preferred Stock); or (c) any consolidation or 
merger of the Corporation with or into another corporation, a sale or transfer 
of all or part of the Corporation's assets for cash, securities or other 
property, or a compulsory share exchange.

          7.   Outstanding Shares.  For purposes of this Certificate of 
               ------------------
Designations, all shares of Series A Convertible Preferred Stock shall be deemed
outstanding except (i) from the date, or the deemed date, of surrender of 
certificates evidencing shares of Series A Convertible Preferred Stock, all 
shares of Series A Convertible Preferred Stock converted into Common Stock, (ii)
from the date of registration of transfer, all shares of Series A Convertible 
Preferred Stock held of record by the Corporation or any subsidiary of the 
Corporation and (iii) any and all shares of Series A Convertible Preferred Stock
held in escrow prior to delivery of such stock by the Corporation to the initial
beneficial owners thereof.

          8.   Status of Acquired Shares.  Shares of Series A Convertible 
               -------------------------
Preferred Stock received upon conversion pursuant to Section 4 or Section 5 or 
otherwise acquired by the Corporation will be restored to the status of 
authorized but unissued shares of Preferred Stock, without designation as to 
class, and may thereafter be issued, but not as shares of Series A Convertible 
Preferred Stock.

          9.   Preemptive Rights.  The Series A Convertible Preferred Stock is 
               -----------------
not entitled to any preemptive or subscription rights in respect of any 
securities of the Corporation.

          10.  Severability of Provisions.  Whenever possible, each provision 
               --------------------------
hereof shall be interpreted in a manner as to be effective and valid under 
applicable law, but if any provision hereof is held to be prohibited by or 
invalid under applicable law, such provision shall be ineffective only to the 
extent of such prohibition or invalidity, without invalidating or otherwise 
adversely affecting the remaining provisions hereof. If a court of competent 
jurisdiction should determine that a provision hereof would be valid or 
enforceable if a period of time were extended or shortened or a particular 
percentage were increased or decreased, then such court may make such change as 
shall be necessary to render the provision in question effective and valid under
applicable law.

                                      16
<PAGE>
 
                           CERTIFICATE OF AMENDMENT

                                      OF

                         CERTIFICATE OF INCORPORATION

                                      OF

                           BOSTON LIFE SCIENCES, INC

                        Pursuant to Section 242 of the
                       Delaware General Corporation Law



          BOSTON LIFE SCIENCES, INC. (the "Corporation"), a corporation
organized and existing under and by virtue of the General Corporation Law of the
State of Delaware, DOES HEREBY CERTIFY:

          FIRST:  That at a meeting of the Board of Directors of the
Corporation, resolutions were duly adopted proposing and declaring advisable the
following amendment to the Certificate of Incorporation of the Company:

          RESOLVED, that the Board of Directors hereby approves and recommends
     to the Company's stockholders that Article FOURTH of the Articles of
     Incorporation of the Company be, and it hereby is, subject to stockholder
     approval at the Meeting, amended and restated in its entirety to read as
     follows:

                    "FOURTH:  The aggregate number of shares which the
          Corporation shall have authority to issue is 26,000,000 to be divided
          into (a) 25,000,000 shares of Common Stock, par value $.01 per share,
          (b) 1,000,000 shares of Preferred Stock, par value $.01 per share, of
          which 264,000 shares are designated as Series A Convertible Preferred
          Stock, par value $.01 per share, with the powers, preferences and
          other rights as described on Exhibit A attached hereto and made a part
          hereof.

                    The Board of Directors is hereby empowered to cause the
          Preferred Stock to be issued from time to time for such consideration
          as it may from time to time fix, and to cause such Preferred Stock to
          be issued in series with such voting powers, designations, preferences
          and relative, participating, optional or other special rights, if any,
          or the qualifications, limitations or restrictions thereof, as
          designated by


                                      17
<PAGE>
 
          the Board of Directors in the resolution providing for the issue of
          such series.  Shares of Preferred Stock of any one series shall be
          identical in all respects.

               Effective as of 5:00 p.m., Eastern time, on June 9, 1997, all
          outstanding shares of Common Stock held by each holder of record on
          such date shall be automatically combined at the rate of one-for-ten
          without any further action on the part of the holders thereof or this
          Corporation.  No fractional shares shall be issued.  All fractional
          shares for one-half share or more shall be increased to the next
          higher whole number of shares and all fractional shares less than one-
          half share shall be decreased to the next lower whole number of
          shares, respectively."

          SECOND:  That thereafter a majority of the holders of the stock of the
Corporation entitled to vote thereon voted in favor of the amendment at a
meeting of the stockholders duly held on June 6, 1997.

          THIRD:  That the foregoing amendment to the Certificate of
Incorporation was duly adopted in accordance with the provisions of Section 242
of the General Corporation Law.

          IN WITNESS WHEREOF, said Boston Life Sciences, Inc. has caused this
Certificate to be executed by its duly authorized officers this 6th day of June,
1997.

                                    BOSTON LIFE SCIENCES, INC.


                                    By: /s/ S. David Hillson
                                        --------------------
                                    Name: S. David Hillson
                                    Title: Chief Executive Officer


                                      18
<PAGE>
 
                                   EXHIBIT A
                                   ---------

                     Series A Convertible Preferred Stock
                     ------------------------------------


        1.  Designation and Amount.  There shall be a series of Preferred Stock 
            ----------------------
designated as "Series A Convertible Preferred Stock" and the number of shares 
constituting such series shall be 264,000.  Such series is referred to herein as
the "Series A Convertible Preferred Stock".  Such number of shares may be 
increased or decreased by resolution of the Board of Directors of the 
Corporation; provided, however, that no decrease shall reduce the number of 
shares of Series A Convertible Preferred Stock to less than the number of shares
then issued and outstanding.

        2.  Dividends.  Subject to the prior and superior rights of the holders 
            ---------
of any shares of any series of Preferred Stock ranking and superior to the 
shares of Series A Convertible Preferred Stock with respect to dividends and 
distributions, the holders of shares of Series A Convertible Preferred Stock, 
shall be entitled to receive dividends and distributions, when, as and if 
declared by the Board of Directors out of funds legally available for such 
purpose.  If the Corporation declares a dividend





                           [CONTINUED ON NEXT PAGE]

* Copy of Exhibit A to the certificate of amendment



                                      19
<PAGE>
 
or distribution on the common stock, par value $.01 per share (the "Common 
Stock"), of the Corporation, the holders of shares of Series A Convertible 
Preferred Stock shall be entitled to receive for each share of Series A 
Convertible Preferred Stock a dividend or distribution in the amount of the 
dividend or distribution that would be received by a holder of the Common Stock 
into which such share of Series A Convertible Preferred Stock is convertible on 
the record date for such dividend or distribution. If the Corporation declares a
dividend or distribution on any other class or series of preferred stock, the 
holders of shares of Series A Convertible Preferred Stock shall be entitled to 
receive a dividend or distribution in an amount per share in proportion to the 
dividend or distribution declared on a share of such other class or series based
upon the liquidation preference of a share of the Series A Convertible Preferred
Stock relative to that of a share of such other class or series, unless the 
holders of at least 66-2/3% of the outstanding shares of Series A Convertible 
Preferred Stock consent otherwise. In any such case, the Corporation shall 
declare a dividend or distribution on the Series A Convertible Preferred Stock 
at the same time that it declares a dividend or distribution on the Common Stock
or such other class or series of preferred stock and shall establish the same 
record date for the dividend or distribution on the Series A Convertible 
Preferred Stock as is established for such dividend or distribution on the 
Common Stock or such other class or series of preferred stock. Each such 
dividend or distribution will be payable to holders of record of the Series A 
Convertible Preferred Stock as they appeared on the records of the Corporation 
at the close of business on the record date declared for such dividend or 
distribution, as shall be fixed by the Board of Directors. If the corporation 
declares or pays a dividend or distribution on the Series A Convertible 
Preferred Stock as a result of the declaration or payment of a dividend or 
distribution on the Common Stock or any other class or series of preferred stock
as described above, the holders of the Series A Convertible Preferred Stock 
shall not be entitled to any additional dividend or distribution solely because 
such first dividend or distribution also required the declaration or payment of 
a dividend or distribution on any other class or series of preferred stock. Any 
reference to "distribution" contained in this Section 2 shall not be deemed to 
include any distribution made in connection with any liquidation, dissolution or
winding up of the Corporation, whether voluntary or involuntary.

     3.  Liquidation Preference.  (a)  In the event of a (i) liquidation, 
         ----------------------
dissolution or winding up of the Corporation, whether voluntary or involuntary 
or (ii) a sale or other disposition of all or substantially all of the assets of
the Corporation (a "Liquidation Event"), after payment or provision for payment 
of debts and other liabilities of the Corporation, the holders of the Series A 
Convertible Preferred Stock then outstanding shall be entitled to be paid out of
the assets of the Corporation available for distribution to its shareholders, 
whether such assets are capital, surplus, or earnings, before any payment or 
declaration and setting apart for payment of any amount shall be made in respect
of the stock junior to the Series A Convertible Preferred Stock, an amount equal
to $130.00 per share plus an amount equal to all declared and unpaid dividends 
thereon. If upon any Liquidation Event, whether voluntary or involuntary, the 
assets to be distributed to holders of the Series A Convertible Preferred Stock 
shall be insufficient to permit the payment to such shareholders of the full 
preferential amounts aforesaid, then all of the assets of the Corporation to be 
distributed shall be so distributed ratably to the holders of the Series A 
Convertible Preferred Stock on the basis of the number of shares of Series A 
Convertible Preferred Stock held. A consolidation or merger of the Corporation 
with or into another corporation shall not be considered a liquidation, 
dissolution or winding up of the Corporation or a sale or other disposition of 
all or substantially all of the assets of the Corporation. All shares of Series 
A Convertible Preferred Stock shall rank as to payment upon the occurrence of 
any of the events described in clauses (i) and (ii) above senior to the Common 
Stock as provided herein and, unless the terms of such series shall provide 
otherwise, senior to all other series of the Corporation's preferred stock.


                                      20
<PAGE>
 
          (b)  After the payment or distribution to the holders of the Series A 
Preferred Stock of the full preferential amounts aforesaid, the holders of 
shares of the Common Stock and any other shares of participating preferred stock
then outstanding will be entitled to receive, pro rata an amount per share equal
                                              --- ----
to $13 plus accrued but unpaid dividends, if any, paid to the holders of the 
Series A Convertible Preferred Stock. After the payment or distribution pursuant
to the immediately preceding sentence, the holders of shares of the Series A 
Convertible Preferred Stock, the Common Stock and any other shares of 
participating preferred stock then outstanding will share any remaining assets 
of the Corporation on a pari passu, as converted basis. 
                        ---- -----

          4.   Conversion.
               ----------
 
          (a) Right of Conversion. The shares of Series A Convertible Preferred
              ------------------- 
Stock shall be convertible, in whole or in part, at the option of the holder
thereof and upon notice to the Corporation as set forth in paragraph (b) below,
into fully paid and nonassessable shares of Common Stock and such other
securities and property as hereinafter provided. The shares of Series A
Convertible Preferred Stock shall be convertible initially at the rate of
175.3771 shares of Common Stock for each full share of Series A Convertible
Preferred Stock and shall be subject to adjustment as provided herein. The
initial conversion price per share of Common Stock is $.5702 and shall be
subject to adjustment as provided herein. For purposes of this resolution, the
"conversion rate" applicable to a share of Series A Convertible Preferred Stock
shall be the number of shares of Common Stock and number or amount of any other
securities and property as hereinafter provided into which a share of Series A
Convertible Preferred Stock is then convertible and shall be determined by
dividing the then existing conversion price into $100.00.

          Subject to adjustment pursuant to the provisions of paragraph (c) 
below, in the event that the conversion price in effect at the time of each 
Interim Closing Date (as defined below) and the Final Closing Date (as defined 
below) is greater than 85% of the average closing bid price of the Common Stock 
for the thirty consecutive trading days immediately preceding (x) any interim 
closing date of the issuance and sale of the Series A Convertible Preferred
Stock (each an "Interim Closing Date") or (y) the final closing date of the
issuance and sale of the Series A Convertible Preferred Stock (the "Final
Closing Date"), then the conversion price shall be adjusted to equal the lesser
of any such average closing bid price. If there is any change in the conversion
price as a result of the preceding sentence, then the conversion rate shall be
changed accordingly, and shall be determined by dividing the new conversion
price into $100.00. The Corporation shall prepare a certificate signed by the
principal financial officer of the Corporation setting forth the conversion rate
as of the Final Closing Date, showing in reasonable detail the facts upon which
such conversion rate is based, and such certificate shall forthwith be filed
with the transfer agent of the Series A Convertible Preferred Stock.
Notwithstanding the provisions of subparagraph (vi) of paragraph (c) below, a
notice stating that the conversion rate has been adjusted pursuant to this
paragraph, or that no adjustment is necessary, and setting forth the conversion
rate in effect as of the Final Closing Date shall be mailed as promptly as
practicable after the Final Closing Date by the Corporation to all record
holders of Series A Convertible Preferred Stock at their last addresses as they
shall appear in the stock transfer books of the Corporation.

          Subject to adjustment pursuant to the provisions of paragraph (c) 
below, the conversion price in effect immediately prior to the date that is 12 
months after the Final Closing Date of the issuance and sale of the Series A 
Convertible Preferred Stock (the "Reset Date") shall be adjusted and reset 
effective as of the Reset Date if the average closing bid price of the Common 
Stock for the 30

                                      21
<PAGE>
 
consecutive trading days immediately preceding the Reset Date (the "12-Month 
Trading Price") is less than 130% of the then applicable conversion price (a 
"Reset Event"). Upon the occurrence of a Reset Event, the conversion price shall
be reduced to be equal to the greater of (A) the 12-Month Trading Price divided 
by 1.3, (B) 50% of the then applicable conversion price and (C) $.375 (subject 
to a proportional adjustment in the event of an adjustment to the conversion 
price pursuant to paragraph 4(c) below). If there is any change in the 
conversion price as a result of the preceding sentence, then the conversion rate
shall be changed accordingly, and shall be determined by dividing the new 
conversion price into $100.00. The Corporation shall prepare a certificate 
signed by the principal financial officer of the Corporation setting forth the 
conversion rate as of the Reset Date, showing in reasonable detail the facts 
upon which such conversion rate is based, and such certificate shall forthwith 
be filed with the transfer agent of the Series A Convertible Preferred Stock. 
Notwithstanding the provisions of subparagraph (vi) of paragraph (c) below, a 
notice stating that the conversion rate has been adjusted pursuant to this 
paragraph, or that no adjustment is necessary, and setting forth the conversion 
rate in effect as of the Reset Date shall be mailed as promptly as practicable 
after the Reset Date by the Corporation to all record holders of the Series A 
Convertible Preferred Stock at their last addresses as they shall appear in the 
stock transfer books of the Corporation.

          The "closing bid price" for each trading day shall be the reported 
closing bid price on the NASDAQ Small-Cap Market or the NASDAQ National Market 
System (collectively referred to as, "NASDAQ") or, if the Common Stock is not 
quoted on NASDAQ, on the principal national securities exchange on which the 
Common Stock is listed or admitted to trading (based on the aggregate dollar 
value of all securities listed or admitted to trading) or, if not listed or 
admitted to trading on any national securities exchange or quoted on NASDAQ, the
closing bid price in the over-the-counter market as furnished by any NASD member
firm selected from time to time by the Corporation for that purpose, or, if such
prices are not available, the fair market value set by, or in a manner 
established by, the Board of Directors of the Corporation in good faith. 
"Trading day" shall mean a day on which the national securities exchange or 
NASDAQ used to determine the closing bid price is open for the transaction of 
business or the reporting of trades or, if the closing bid price is not so 
determined, a day on which NASDAQ is open for the transaction of business.

          (b)   Conversion Procedures.  Any holder of shares of Series A 
                ---------------------
Convertible Preferred Stock desiring to convert such shares into Common Stock 
shall surrender the certificate or certificates evidencing such shares of Series
A Convertible Preferred Stock at the office of the transfer agent for the Series
A Convertible Preferred Stock, which certificate or certificates, if the 
Corporation shall so require, shall be duly endorsed to the Corporation or 
in blank, or accompanied by proper instruments of transfer to the Corporation or
in blank, accompanied by irrevocable written notice to the Corporation that the 
holder elects so to convert such shares of Series A Convertible Preferred Stock 
and specifying the name or names (with address) in which a certificate or 
certificates evidencing shares of Common Stock are to be issued. The Corporation
need not deem a notice of conversion to be received unless the holder complies 
with all the provisions hereof. The Corporation will instruct the transfer agent
(which may be the Corporation) to make a notation of the date that a notice of 
conversion is received, which date shall be deemed to be the date of receipt for
purposes hereof.

          The Corporation shall, as soon as practicable after such deposit of 
certificates evidencing shares of Series A Convertible Preferred Stock 
accompanied by the written notice and compliance with any other conditions
herein contained, deliver at such office of such transfer agent to the person
for whose account such share of Series A Convertible Preferred Stock were so
surrendered, or to the nominee or nominees of such person, certificates
evidencing the number of full shares of Common Stock to which such person shall
be entitled as aforesaid, together with a cash adjustment of any fraction of a



                                      22
<PAGE>
 
share as hereinafter provided. Subject to the following provisions of this 
paragraph, such conversion shall be deemed to have been made as of the date of 
such surrender of the shares of Series A Convertible Preferred Stock to be 
converted, and the person or persons entitled to receive the Common Stock 
deliverable upon conversion of such Series A Convertible Preferred Stock shall 
be treated for all purposes as the record holder or holders of such Common 
Stock on such date; provided, however, that the Corporation shall not be 
required to convert any shares of Series A Convertible Preferred Stock while the
stock transfer books of the Corporation are closed for any purpose, but the 
surrender of Series A Convertible Preferred Stock for conversion during any 
period while such books are so closed shall become effective for conversion 
immediately upon the reopening of such books as if the surrender had been made 
on the date of such reopening, and the conversion shall be at the conversion 
rate in effect on such date. No adjustments in respect of any dividends on 
shares surrendered for conversion or any dividend on the Common Stock issued 
upon conversion shall be made upon the conversion of any shares of Series A 
Convertible Preferred Stock.

          All notices of conversion shall be irrevocable; provided, however, 
that if the Corporation has sent notice of an event pursuant to Section 4(g) 
hereof, a holder of Series A Convertible Preferred Stock may, at its election, 
provide in its notice of conversion that the conversion of its shares of Series 
A Convertible Preferred Stock shall be contingent upon the occurrence of the 
record date or effectiveness of such event (as specified by such holder), 
provided that such notice of conversion is received by the Corporation prior to 
such record date or effective date, as the case may be.

          (c)  Certain Adjustments of Conversion Rate. In addition to adjustment
               --------------------------------------
pursuant to paragraph (a) above, the conversion rate (and the corresponding 
conversion price) shall be subject to adjustment from time to time as follows:

          (i)  In case the Corporation shall (A) pay a dividend in Common Stock 
     or make a distribution in Common Stock, (B) subdivide its outstanding 
     Common Stock, (C) combine its outstanding Common Stock into a smaller 
     number of shares of Common Stock or (D) issue by reclassification of its 
     Common Stock other securities of the Corporation, then in each such case
     the conversion rate in effect immediately prior thereto shall be adjusted
     so that the holder of any shares of Series A Convertible Preferred Stock
     thereafter surrendered for conversion shall be entitled to receive the kind
     and number of shares of Common Stock or other securities of the Corporation
     which such holder would have owned or would have been entitled to receive
     immediately after the happening of any of the events described above had
     such shares of Series A Convertible Preferred Stock been converted
     immediately prior to the happening of such event or any record date with
     respect thereto. Any adjustment made pursuant to this subparagraph (i)
     shall become effective immediately after the effective date of such event
     retroactive to the record date, if any, for such event.

          (ii)  In case the Corporation shall issue or sell Common Stock or 
     rights, options, warrants or other securities convertible into Common 
     Stock, excluding those rights, options, warrants or other securities 
     convertible into Common Stock already outstanding and disclosed in the 
     Offering Memorandum, at a price per share which is lower than both (A) the 
     then effective conversion price and (B) the closing bid price (as defined 
     in Section 4) for the trading day immediately prior to such record date 
     (the "Current Market Price"), then the conversion rate shall be determined 
     by multiplying the conversion rate theretofore in effect by a fraction, of 
     which the numerator shall be the number of shares of Common Stock 
     outstanding immediately prior to the issuance of such shares, rights, 
     options, warrants or convertible securities plus the number of additional
     shares of Common Stock offered for subscription or purchase, and of which
     the


                                      23

<PAGE>
 
denominator shall be the number of shares of Common Stock outstanding 
immediately prior to the issuance of such rights, options, warrants or 
convertible securities plus the number of shares which the aggregate offering 
price of the total number of shares offered would purchase at the then effective
conversion price. Such adjustment shall be made whenever such rights, options, 
warrants or convertible securities are issued, and shall become effective 
immediately and retroactive to the record date for the determination of 
stockholders entitled to receive such rights, options, warrants or convertible 
securities.

     (iii)  In case the Corporation shall distribute to all or substantially all
holders of its Common Stock evidences of its indebtedness or assets (excluding 
cash dividends or distributions out of earnings) or rights, options, warrants or
convertible securities containing the right to subscribe for or purchase Common 
Stock (excluding those referred to in subparagraph (ii) above), then in each 
case the conversion rate shall be determined by multiplying the conversion rate 
theretofore in effect by a fraction, of which the numerator shall be the then 
fair value as determined in good faith by the Corporation's Board of Directors 
on the date of such distribution, and of which the denominator shall be such 
fair value on such date minus the then fair value (as so determined) of the 
portion of the assets or evidences of indebtedness so distributed or of such 
subscription rights, options, warrants or convertible securities applicable to 
one share. Such adjustment shall be made whenever any such distribution is made 
and shall become effective on the date of distribution retroactive to the record
date for the determination of stockholders entitled to receive such 
distribution.

     (iv)   Upon the expiration of any rights, options, warrants or conversion 
privileges, if such shall not have been exercised, the conversion rate shall, 
upon such expiration, be readjusted and shall thereafter be such as it would 
have been had it been originally adjusted (or had the original adjustment not 
been required, as the case may be) on the basis of (A) the fact that Common 
Stock, if any, actually issued or sold upon the exercise of such rights, 
options, warrants or conversion privileges, and (B) the fact that such shares of
Common Stock, if any, were issued or sold for the consideration actually 
received by the Corporation upon such exercise plus the consideration, if any, 
actually received by the Corporation for the issuance, sale or grant of all such
rights, options, warrants or conversion privileges whether or not exercised.

     (v)    No adjustment in the conversion rate shall be required unless such 
adjustment would require an increase or decrease of at least 1% in such rate; 
provided, however, that the Corporation may make any such adjustment at its 
election; and provided, further, that any adjustments which by reason of this 
subparagraph (v) are not required to be made shall be carried forward and taken 
into account in any subsequent adjustment. All calculations under this Section 4
shall be made to the nearest cent or to the nearest one-hundredth of a share, as
the case may be.

     (vi)   Whenever the conversion rate is adjusted as provided in any 
provision of this Section 4;

            (A)  the Corporation shall compute (or may retain a firm of
     independent public accountants of recognized national standing (which may
     be any such firm regularly employed by the Corporation) to compute) the
     adjusted conversion rate in accordance with this Section 4 and shall
     prepare a certificate signed by the principal financial officer of the
     Corporation (or cause any such independent public accountants to execute a
     certificate) setting forth the adjusted conversion rate and showing in
     reasonable detail the

                                      24
<PAGE>
 
           facts upon which each adjustment is based, and such certificate shall
           forthwith be filed with the transfer agent of the Series A
           Convertible Preferred Stock; and

                 (B)   a notice stating that the conversion rate has been 
           adjusted and setting forth the adjusted conversion rate shall
           forthwith be required, and as soon as practicable after it is
           required, such notice shall be mailed by the Corporation to all
           record holders of Series A Convertible Preferred Stock at their last
           addresses as they shall appear in the stock transfer books of the
           Corporation.

           (vii) In the event that at any time, as a result of any adjustment 
     made pursuant to this Section 4, the holder of any shares of Series A
     Convertible Preferred Stock thereafter surrendered for conversion shall
     become entitled to receive any shares of the Corporation other than shares
     of Common stock or to receive any other securities, the number of such
     other shares or securities so receivable upon conversion of any share of
     Series A Convertible Preferred Stock shall be subject to adjustment from
     time to time in a manner and on terms as nearly equivalent as practicable
     to the provisions contained in this Section 4 with respect to the Common
     Stock.

           (d)   No fractional Shares.  No fractional shares or scrip 
                 --------------------
representing fractional shares of Common stock shall be issued upon conversion 
of Series A Convertible Preferred Stock.  If more than one certificate 
evidencing shares of Series A Convertible Preferred Stock shall be surrendered 
for conversion at one time by the same holder, the number of full shares 
issuable upon conversion thereof shall be computed on the basis of the aggregate
number of shares of Series A Convertible Preferred Stock so surrendered.  
Instead of any fractional share of Common stock which would otherwise be 
issuable upon conversion of any shares of Series A Convertible Preferred Stock, 
the Corporation shall pay a cash adjustment in respect of such fractional 
interest in an amount equal to the same fraction of the market price per share 
of Common Stock (which shall be the closing price as defined in Section 5) at 
the close of business on the day of conversion.

           (e)   Consolidation; Merger; Etc.  If the Corporation shall enter 
                 --------------------------
into any consolidation, merger, combination or other transaction in which shares
of Common Stock constituting in excess of 50% of the voting power of the
Corporation are exchanged for or changed into other stock or securities, cash
and/or any other property (a "Merger Transaction"), then in any such case the
shares of Series A Convertible Preferred Stock shall at the same time be
similarly exchanged or changed in an amount per share equal to (i) the
conversion rate in effect at such time multiplied by (ii) the aggregate fair
market value, as determined in good faith by the Board of Directors of the
Corporation, of stock, securities, cash and/or any other property (payable in
kind), as the case may be, into which or for which each share of Common stock is
changed or exchanged (the "Per Share Merger Consideration"); provided, however,
                                                             --------  -------
that if any stock of securities received in the Merger Transaction are traded on
a securities exchange or quotation system, the fair market value of such stock
or securities shall be the closing sales price of such stock or securities as
reported by the principal exchange or quotation system for such stock or
securities the business day immediately preceding the execution of the merger
agreement or other transaction agreement for such Merger Transaction, and if no
such trading market exists for such stock or securities, the aggregate fair
market value shall be as determined in good faith by the Board of Directors of
the Corporation; provided, further, however, that if any such Merger Transaction
                 --------  -------  -------
is effected on or before the Reset Date, and if the Per Share Merger
Consideration (assuming conversion of all outstanding convertible stock,
including the Series A Convertible Preferred Stock, at the conversion rate for
such stock in effect at the time of the execution and delivery of the merger
agreement relating to such Merger Transaction) is less than 130% of the then
applicable conversion price relating to the Series A Convertible Preferred
Stock, then the conversion price will be reduced to equal the greater of (x) the
Per Share

                                      25
<PAGE>
 
Merger Consideration divided by 1.3, (y) 50% of the then applicable conversion 
price and (z) $.375 (subject to a proportional adjustment in the event of an 
adjustment to the conversion price pursuant to paragraph 4(c) above).

                (f)     Reservation of Shares; Transfer Taxes; Etc.  The 
                        ------------------------------------------
Corporation shall at all times reserve and keep available, out of its authorized
unissued stock, solely for the purpose of effecting the conversion of the Series
A Convertible Preferred Stock, such number of shares of its Common Stock free of
preemptive rights as shall from time to time be sufficient to effect the 
conversion of all shares of Series A Convertible Preferred Stock from time to 
time outstanding.  The Corporation shall use its best efforts from time to time,
in accordance with the laws of the State of Delaware, to increase the authorized
number of shares of Common Stock if at any time the number of shares of Common 
Stock not outstanding shall not be sufficient to permit the conversion of all 
the then-outstanding shares of Series A Convertible Preferred Stock.

                The Corporation shall pay any and all issue or other taxes that
may be payable in respect of any issue or delivery of shares of Common Stock on
conversion of the Series A Convertible Preferred Stock. The Corporation shall
not, however, be required to pay any tax which may be payable in respect of any
transfer involved in the issue or delivery of Common Stock (or other securities
or assets) in a name other than that in which the shares of Series A Convertible
Preferred Stock so converted were registered, and no such issue or delivery
shall be made unless and until the person requesting such issue has paid to the
Corporation the amount of such tax or has established, to the satisfaction of
the Corporation, that such tax has been paid.

                Notwithstanding anything to the contrary herein, before taking 
any action that would cause an adjustment reducing the conversion rate or before
any such adjustment is made as a result of a Reset Event, in either event, such 
that the effective conversion price (for all purposes an amount equal to $100.00
divided by the conversion rate as in effect at such time) would be below the 
then par value of the Common Stock, the Corporation shall take any corporate 
action which may, in the opinion of its counsel, be necessary in order that the 
Corporation may validly and legally issue fully paid and nonassessable shares of
Common Stock at the conversion rate as so adjusted.

                (g)     Prior Notice of Certain Events. In case:
                        ------------------------------

                (i)     the Corporation shall declare any dividend (or any other
distribution) on its Common Stock; or

                (ii)    the Corporation shall authorize the granting to the 
holders of Common Stock of rights or warrants to subscribe for or purchase any 
shares of stock of any class or of any other rights or warrants; or

                (iii)   of any reclassification of Common Stock (other than a 
subdivision or combination of the outstanding Common Stock, or a change in par 
value, or from par value to no par value, or from no par value to par value), or
of any consolidation or merger to which the Corporation is a party and for which
approval of any stockholders of the Corporation shall be required, or of the 
sale or transfer of all or substantially all of the assets of the Corporation or
of any compulsory share exchange whereby the Common Stock is converted into 
other securities, cash or other property; or


                                      26
<PAGE>
 
         (iv)   of the voluntary or involuntary dissolution, liquidation or
winding up of the Corporation;

then the Corporation shall cause to be filed with the transfer agent for the 
Series A Convertible Preferred Stock, and shall cause to be mailed to the 
holders of record of the Series A Convertible Preferred Stock, at their last 
addresses as they shall appear upon the stock transfer books of the Corporation,
at least 10 days prior to the applicable record date hereinafter specified, a 
notice stating (x) the date on which a record (if any) is to be taken for the 
purpose of such dividend, distribution or granting of rights or warrants or, if 
a record is not to be taken, the date as of which the holders of Common Stock of
record to be entitled to such dividend, distribution, rights or warrants are to 
be determined and a  description of the cash, securities or other property to be
received by such holders upon such dividend, distribution or granting of rights 
or warrants or (y) the date on which such reclassification, consolidation, 
merger, sale, transfer, share exchange, dissolution, liquidation or winding up 
is expected to become effective, the date as of which it is expected that 
holders of Common Stock of record shall be entitled to exchange their shares of 
Common Stock for securities or other property deliverable upon such exchange, 
dissolution, liquidation or winding up and the consideration, including 
securities or other property, to be received by such holders upon such exchange;
provided, however, that no failure to mail such notice or any defect therein or 
in the mailing thereof shall affect the validity of the corporate action 
required to be specified in such notice.

         (h)    Other Changes in Conversion Rate.  The Corporation from time to 
                --------------------------------
time may increase the conversion rate by any amount for any period of time if
the period is at least 20 days and if the increase is irrevocable during the
period. Whenever the conversion rate is so increased, the Corporation shall mail
to holders of record of the Series A Convertible Preferred Stock a notice of the
increase at least 10 days before the date the increased conversion rate takes
effect, and such notice shall state the increased conversion rate and the period
it will be in effect.

         The Corporation may make such increases in the conversion rate, in 
addition to those required or allowed by this Section 4, as shall be determined 
by it, as evidence by a resolution of the Board of Directors, to be advisable in
order to  avoid or diminish any income tax to holders of Common Stock resulting 
from any dividend or distribution of stock or issuance or rights or warrants to 
purchase or subscribe for stock or from any event treated as such for income tax
purposes.

         (i)    Ambiguities/Errors. The Board of Directors of the Corporation 
                ------------------
shall have the power to resolve any ambiguity or correct any error in the 
provisions relating to the convertibility of the Series A Convertible Preferred 
Stock, and its actions in so doing shall be final and conclusive.

         5.     Mandatory Conversion at Option of Corporation. At any time on or
                ---------------------------------------------
after the Reset Date, the Corporation, as its option, may cause the Series A 
Convertible Preferred Stock to be converted in whole, or in part, on a pro rata 
                                                                       --- ----
basis, into fully paid and nonassessable shares of Common Stock and such other 
securities and property as herein provided if the closing price of the Common 
Stock shall have exceeded 150% of the then applicable conversion price for at
least 20 trading days in any 30 consecutive trading day period. Any shares of
Series A Convertible Preferred Stock so converted shall be treated as having
been surrendered by the holder thereof for conversion pursuant to Section 4 on
the date of such mandatory conversion (unless previously converted at the option
of the holder).

         No more than 60 nor less than 10 days prior to the date of any such 
mandatory conversion, notice by first class mail, postage prepaid, shall be 
given to the holders of record of the Series A Convertible Preferred Stock to be
converted, addressed to such holders at their last addresses 


                                      27
<PAGE>
 
as shown on the stock transfer books of the Corporation.  Each such notice shall
specify the date fixed for conversion, the place or places for surrender of 
shares of Series A Convertible Preferred Stock, and the then effective 
conversion rate pursuant to Section 4.

               The "closing price" for each trading day shall be the reported 
last sales price regular way or, in case no such reported sale takes place on 
such day, the average of the reported closing bid and asked prices regular way, 
in either case on the NASDAQ Small-Cap Market or the NASDAQ National Market 
System (collectively referred to as, "NASDAQ") or, if the Common Stock is not 
quoted on NASDAQ, on the principal national securities exchange on which the 
Common Stock is listed or admitted to trading (based on the aggregate dollar 
value of all securities listed or admitted to trading) or, if not listed or 
admitted to trading on any national securities exchange or quoted on NASDAQ, the
average of the closing bid and asked prices in the over-the-counter market as 
furnished by any NASD member firm selected from time to time by the Corporation 
for that purpose, or, if such prices are not available, the fair market value 
set by, or in a manner established by, the Board of Directors of the Corporation
in good faith.  "Trading day" shall have the meaning given in Section 4 hereof.

               Any notice which is mailed as herein provided shall be 
conclusively presumed to have been duly given by the Corporation on the date 
deposited in the mail, whether or not the holder of the Series A Convertible 
Preferred Stock receives such notice; and failure properly to give such notice 
by mail, or any defect in such notice, to the holders of the shares to be 
converted shall not affect the validity of the proceedings for the conversion of
any other shares of Series A Convertible Preferred Stock. On or after the date 
fixed for conversion as stated in such notice, each holder of shares called to 
be converted shall surrender the certificate evidencing such shares to the 
Corporation at the place designated in such notice for conversion.  
Notwithstanding that the certificates evidencing any shares properly called for
conversion shall not have been surrendered, the shares shall no longer be deemed
outstanding and all rights whatsoever with respect to the shares so called for 
conversion (except the right of the holders to convert such shares upon 
surrender of their certificates therefor) shall terminate.

               6.    Voting Rights.
                     -------------

               (a)   General.  Except as otherwise provided herein, in the 
                     -------
Amended and Restated Certificate of Incorporation or by law, the holders of 
shares of Series A Convertible Preferred Stock, the holders of shares of Common 
Stock and the holders of any other class or series of shares entitled to vote 
with the Common Stock shall vote together as one class on all matters submitted 
to a vote of stockholders of the Corporation.  In any such vote, each share of 
Series A Convertible Preferred Stock shall entitle the holder thereof to cast 
the number of votes equal to the number of votes which could be cast in such 
vote by a holder of the Common Stock into which such share of Series A 
Convertible Preferred Stock is convertible on the record date for such vote, or 
if no record date has been established, on the date such vote is taken.  Any 
shares of Series A Convertible Preferred Stock held by the Corporation or any 
entity controlled by the Corporation shall not have voting rights hereunder and 
shall not be counted in determining the presence of a quorum.

               (b)   Class Voting Rights.  In addition to any vote specified in
                     -------------------
paragraph (a) of this Section 6, so long as 50% of the shares of Series A 
Convertible Preferred Stock (including those shares of Series A Convertible 
Preferred Stock issued or issuable upon the exercise of the placement agent 
warrants issued in connection with the offer and sale of the Series A 
Convertible Preferred Stock) shall be outstanding, the Corporation shall not, 
without the affirmative vote or consent of the holders of at least 66-2/3% of 
all outstanding Series A Convertible Preferred Stock voting separately as a 
class, (i) amend, alter or repeal any provision of the Amended and Restated 
Certificate of Incorporation, as amended, or 


                                      28
<PAGE>
 
the Bylaws of the Corporation so as adversely to affect the relative rights, 
preferences, qualifications, limitations or restrictions of the Series A 
Convertible Preferred Stock, (ii) declare any dividend or distribution on the 
Common Stock or any other class or series of preferred stock or authorize the 
repurchase of any securities of the Corporation or (iii) authorize or issue, or 
increase the authorized amount of, any additional class or series of stock, or 
any security convertible into stock of such class or series, (A) ranking prior 
to, or on a parity with, the Series A Convertible Preferred Stock upon 
liquidation, dissolution or winding up of the Corporation or a sale of all or 
substantially all of the assets of the Corporation or (B) providing for the 
payment of any dividends or distributions. A class vote on the part of the 
Series A Convertible Preferred Stock shall, without limitation, specifically not
be deemed to be required (except as otherwise required by law or resolution of 
the Corporation's Board of Directors) in connection with: (a) the authorization,
issuance or increase in the authorized amount of Common Stock or of any shares 
of any other class or series of stock ranking junior to the Series A Convertible
Preferred Stock in respect of distributions upon liquidation, dissolution or 
winding up of the Corporation; (b) the authorization, issuance or increase in 
the amount of the Series A Convertible Preferred Stock or any bonds, mortgages, 
debentures or other obligations of the Corporation (other than bonds, mortgages,
debentures or other obligations convertible into or exchangeable for or having 
option rights to purchase any shares of stock of the Corporation the 
authorization issuance or increase in amount of which would require the consent 
of the holders of the Series A Preferred Stock); or (c) any consolidation or 
merger of the Corporation with or into another corporation, a sale or transfer 
of all or part of the Corporation's assets for cash, securities or other 
property, or a compulsory share exchange.

          7.   Outstanding Shares.  For purposes of this Certificate of 
               ------------------
Designations, all shares of Series A Convertible Preferred Stock shall be deemed
outstanding except (i) from the date, or the deemed date, of surrender of 
certificates evidencing shares of Series A Convertible Preferred Stock, all 
shares of Series A Convertible Preferred Stock converted into Common Stock, (ii)
from the date of registration of transfer, all shares of Series A Convertible 
Preferred Stock held of record by the Corporation or any subsidiary of the 
Corporation and (iii) any and all shares of Series A Convertible Preferred Stock
held in escrow prior to delivery of such stock by the Corporation to the initial
beneficial owners thereof.

          8.   Status of Acquired Shares.  Shares of Series A Convertible 
               -------------------------
Preferred Stock received upon conversion pursuant to Section 4 or Section 5 or 
otherwise acquired by the Corporation will be restored to the status of 
authorized but unissued shares of Preferred Stock, without designation as to 
class, and may thereafter be issued, but not as shares of Series A Convertible 
Preferred Stock.

          9.   Preemptive Rights.  The Series A Convertible Preferred Stock is 
               -----------------
not entitled to any preemptive or subscription rights in respect of any 
securities of the Corporation.

          10.  Severability of Provisions.  Whenever possible, each provision 
               --------------------------
hereof shall be interpreted in a manner as to be effective and valid under 
applicable law, but if any provision hereof is held to be prohibited by or 
invalid under applicable law, such provision shall be ineffective only to the 
extent of such prohibition or invalidity, without invalidating or otherwise 
adversely affecting the remaining provisions hereof. If a court of competent 
jurisdiction should determine that a provision hereof would be valid or 
enforceable if a period of time were extended or shortened or a particular 
percentage were increased or decreased, then such court may make such change as 
shall be necessary to render the provision in question effective and valid under
applicable law.

                                      29
<PAGE>
 
              CERTIFICATE OF DESIGNATIONS, PREFERENCES AND RIGHTS


                                      OF

                     SERIES B CONVERTIBLE PREFERRED STOCK

                                      OF

                          BOSTON LIFE SCIENCES, INC.

                        (Pursuant to Section 151 of the
                       Delaware General Corporation Law)

                   _________________________________________


          BOSTON LIFE SCIENCES, INC., a corporation organized and existing under
 the laws of the State of Delaware (the "Corporation"), hereby certifies that,
 pursuant to authority vested in the Board of Directors of the Corporation by
 Article Fourth of the Amended and Restated Certificate of Incorporation of the
 Corporation, the following resolution was adopted as of January 25, 1999 by the
 Board of Directors of the Corporation pursuant to Section 141 of the Delaware
 General Corporation Law:

          "RESOLVED that, pursuant to authority vested in the Board of Directors
 of the Corporation by Article Fourth of the Corporation's Amended and Restated
 Certificate of Incorporation, of the total authorized number of 1,000,000
 shares of Preferred Stock, par value $0.01 per share, of the Corporation, there
 shall be designated a series of 475,000 shares that shall be issued in and
 constitute a single series to be known as "Series B Convertible Preferred
 Stock" (hereinafter called the "Series B Convertible Preferred Stock"). The
 shares of Series B Convertible Preferred Stock shares have the voting powers,
 designations, preferences and other special rights, and qualifications,
 limitations and restrictions thereof set forth below:

     1.   Dividends.  The holder of each share of Series B Convertible Preferred
          ---------                                                             
     Stock shall not be entitled to receive dividends in any fixed amount;
     provided, however, the holder of each share of Series B Convertible
     -----------------                                                  
     Preferred Stock shall be entitled to receive such dividends thereon as the
     Board of Directors may declare, if, as and when so declared. Such dividends
     on the Series B Convertible Preferred Stock shall not be cumulative and no
     right to such dividends shall accrue to holders of the Series B Convertible
     Preferred Stock unless and until declared by the Board of Directors. The
     holders of shares of the Series B Convertible Preferred Stock are entitled
     to share equally in any dividend, when, as and if declared by the Board on
     the Common Stock.

     2.   Liquidation.  In the event of any liquidation, dissolution or winding
          -----------                                                          
     up of the Corporation, whether voluntary or involuntary, after payment or
     provision for payment of debts and other liabilities of the Corporation,
     the holders of the shares of Series B Convertible Preferred Stock and the
     holders of shares of Series A Convertible Preferred Stock, before any
     distribution or payment is made upon any Common Stock, shall be entitled to
     receive on a pari-passu basis in accordance with their respective
                  ----------                                 
     Preference Amounts (as hereinafter defined), (i) with respect to each share
     of Series A Convertible

                                      30
<PAGE>
 
     Preferred Stock an amount ("Series A Preference Amount") equal to the sum
     of (A) $130.00 (subject to equitable adjustment to reflect stock splits,
     stock combinations, stock dividends, recapitalizations, and like
     occurrences) and (B) all declared but unpaid dividends (if any) payable
     with respect to such shares, and (ii) with respect to each share of Series
     B Convertible Preferred ("Series B Preference Amount", and collectively the
     Series A Preference Amount and the Series B Preference Amount are sometimes
     hereinafter collectively referred to as the "Preference Amount") equal to
     the sum of (A) the "Original Issuance Price" per share, which shall mean
     $19.50 (subject to equitable adjustment to reflect stock splits, stock
     dividends, stock combinations, recapitalizations, and like occurrences) and
     (B) all declared but unpaid dividends (if any) payable with respect to such
     shares.

          If upon such liquidation, dissolution or winding up of the
     Corporation, whether voluntary or involuntary, the assets to be distributed
     among the holders of the Series A Convertible Preferred Stock and the
     Series B Convertible Preferred Stock of the Corporation shall be
     insufficient to permit payment to the holders of the full respective
     Preference Amount to which they shall be entitled, then the entire assets
     of the Corporation to be so distributed shall be distributed ratably among
     the holders of the Series A Convertible Preferred Stock and the Series B
     Convertible Preferred Stock based on the respective amounts that would be
     payable to them on or with respect to the shares of Series A Convertible
     Preferred Convertible Stock and Series B Preferred Convertible Stock held
     by them upon such distribution pursuant to this Section. Upon any such
     liquidation, dissolution or winding up of the Corporation after the holders
     of the Series B Convertible Preferred Stock and Series A Convertible
     Preferred Stock shall have been paid in full in accordance with the rights
     and preferences to which they are entitled, the remaining net assets of the
     Corporation shall be distributed ratably and exclusively to the holders of
     the Common Stock.

          Written notice of such liquidation, dissolution or winding up, stating
     a payment date, the amount of the Preference Amounts and the place where
     said sums shall be payable shall be given by mail, postage prepaid, not
     less than 30 or more than 60 days prior to the payment date stated therein,
     to the holders of record of the Series A Convertible Preferred Stock,
     Series B Convertible Preferred Stock and the Common Stock, such notice to
     be addressed to each stockholder at his post office address as shown by the
     records of the Corporation. Notwithstanding Section 3 below, holders of
     record of the Series B Convertible Preferred Stock shall have the right to
     convert their shares of Series B Convertible Preferred Stock into Common
     Stock at the then applicable Conversion Price prior to liquidation pursuant
     to the formula set forth in the first paragraph of Section 3A; holders
     shall comply with the procedures set forth in the third paragraph of
     Section 3A.

          For purposes of this Section with respect to the Series B Convertible
     Preferred Stock, a liquidation, dissolution or winding up of the
     Corporation shall be deemed to be occasioned by, or to include, (A) the
     acquisition of the Corporation by another entity by means of any
     transaction or series of related transactions (including, without
     limitation, any reorganization, merger or consolidation, but excluding any
     merger effected exclusively for the purpose of changing the domicile of the
     Corporation) in which outstanding shares of the Corporation are exchanged
     for securities or other consideration issued, or caused to be issued by the
     acquiring corporation or its subsidiary, or (B) a sale,

                                      31
<PAGE>
 
     lease, exchange or other transfer (in one transaction or a series of
     transactions) of all or substantially all of the assets of the Corporation,
     unless in each case the Corporation's stockholders of record as constituted
     ------                 
     immediately prior to such acquisition or sale will, immediately after such
     acquisition or sale (by virtue of securities issued as consideration for
     the Corporation's acquisition or sale or otherwise) hold at least 50% of
     the voting power of the surviving or acquiring entity.

          Whenever the distribution provided for in this Section shall be
     payable in property other than cash, the value of such property shall be
     the fair market value thereof as determined in good faith by not less than
     a majority of the Directors then serving on the Board of Directors of the
     Corporation.

          3.   Conversion.
               ---------- 

          3A.  Right to Convert.  Subject to the terms and conditions of this
               ----------------                                              
     Section 3, the holder of any share or shares of Series B Convertible
     Preferred Stock shall have the right, at its option, to convert any such
     shares of Series B Convertible Preferred Stock into fully paid and
     nonassessable whole shares of Common Stock in accordance with this Section
     3. The holder may convert each share of Series B Convertible Preferred
     Stock into such number of shares of Common Stock as is obtained by dividing
     the Original Issuance Price by the Conversion Price (as hereinafter
     defined). The initial Conversion Price shall be eighty percent (80%) of the
     average Closing Bid Price of the Common Stock for the five Trading Days (as
     defined below) ending on the Trading Day that is one Trading Day prior to
     February 5, 1999; provided, however, that the initial Conversion Price
                       --------  -------                                   
     may not be less than $3.50 nor greater than $4.00 (such price defined as
     the "Initial Conversion Price"). The Initial Conversion Price shall be
     subject to adjustment pursuant to Sections 3D and 3E below, with such price
     as last adjusted referred to herein as the "Conversion Price."

          In addition to the conversion rights of the holder outlined above, at
     any time commencing 270 days after the issuance of the Series B Convertible
     Preferred Stock, the holder has the option to convert Series B Convertible
     Preferred Stock at a conversion rate that produces a minimum rate of return
     to the holder of twenty-five percent (25%) in accordance with the formula
     ("Guaranteed Return Formula") set forth below.

          Under the Guaranteed Return Formula, each share of Series B
     Convertible Preferred Stock may be converted into such number of shares of
     Common Stock that produces a total value of Common Stock equal to one
     hundred and twenty five percent (125%) of the Original Issuance Price;
     provided, however, that no share of Series B Convertible Preferred Stock
     --------  -------                                                       
     shall be convertible into less than five (5) or more than ten (10) shares
     of Common Stock. The price per share to be used in determining such
     additional issuances of Common Stock (if any) will be the average Closing
     Bid Price for the five Trading Days ending on the Trading Day that is one
     Trading Day prior to the date of conversion. If the Corporation determines
     that the issuance of shares pursuant to this paragraph or pursuant to the
     first paragraph of this Section 3A, under applicable NASDAQ Stock Market
     requirements with respect to certain issues of Corporation securities
     convertible into 20% or more of the Corporation's Common Stock, requires
     shareholder approval, then, prior to any such issuance, the Corporation at
     its option may either (a) redeem the Series B Convertible Preferred Stock
     in accordance with the

                                      32
<PAGE>
 
     redemption procedures contained in Section 4 herein within fifteen (15)
     days after receipt of the conversion notice relating to the Series B
     Convertible Preferred Stock; or (b) may solicit and obtain within ninety
     (90) days after receipt of the conversion notice relating to the Series B
     Convertible Preferred Stock the necessary shareholder consent before any
     such shares are required to be issued. In the event that the Corporation is
     unable to obtain the necessary shareholder consent pursuant to (b) above
     within the time period allotted, after recommending and seeking such
     approval in good faith, then the corporation shall redeem the Series B
     Convertible Preferred Stock in accordance with the preceding sentence. In
     the event the Closing Bid Price for the Corporation's Common Stock is at
     any time from the date of issuance at or above $7.00 per share (subject to
     equitable adjustment to reflect stock splits, stock dividends, stock
     combinations, recapitalizations, and like occurrences) for five consecutive
     Trading Days (as defined below), the holder's right to the receive
     additional shares of Common Stock upon conversion pursuant to this
     paragraph shall terminate thereafter.

          The rights of conversion in this Section 3 shall be exercised by the
     holder thereof by giving written notice that the holder elects to convert a
     stated number of shares of Series B Convertible Preferred Stock into Common
     Stock and by surrender of a certificate or certificates for the shares so
     to be converted to the Corporation at its principal office (or such other
     office or agency of the Corporation as the Corporation may designate by
     notice in writing to the holder or holders of the Series B Convertible
     Preferred Stock) at any time during its usual business hours on the date
     set forth in such notice, together with a statement of the name or names
     (with address), subject to compliance with applicable laws to the extent
     such designation shall involve a transfer, in which the certificate or
     certificates for shares of Common Stock shall be issued.

          The "Closing Bid Price" for each trading day shall be the reported
     closing bid price on the NASDAQ Small-Cap Market or the NASDAQ National
     Market System (collectively referred to as, "NASDAQ") or, if the Common
     Stock is not quoted on NASDAQ, on the principal national securities
     exchange on which the Common Stock is listed or admitted to trading (based
     on the aggregate dollar value of all securities listed or admitted to
     trading) or, if not listed or admitted to trading on any national
     securities exchange or quoted on NASDAQ, the closing bid price in the over-
     the counter market as furnished by any NASD member firm selected from time
     to time by the Corporation for that purpose, or, if such prices are not
     available, the fair market value set by, or in a manner established by, the
     Board of Directors of the Corporation in good faith. "Trading day" shall
     mean a day on which the national securities exchange or NASDAQ used to
     determine the Closing Bid Price is open for the transaction of business or
     the reporting of trades or, if the Closing Bid Price is not so determined,
     a day on which NASDAQ is open for the transaction of business.

          3B.  Issuance of Certificates; Time Conversion Effected.  Subject to
               --------------------------------------------------             
     the limitation on conversion set forth in second sentence of the third
     paragraph of Section 3A, promptly after the receipt by the Corporation of
     the written notice referred to in Subsection 3A and surrender of the
     certificate or certificates for the share or shares of the Series B
     Convertible Preferred Stock to be converted, the Corporation shall issue
     and deliver, or cause to be issued and delivered, to the holder, within
     three (3) business days, registered in such name or names as such holder
     may direct, subject to compliance with applicable laws to the extent such
     designation shall involve a transfer, a certificate or

                                      33
<PAGE>
 
     certificates for the number of whole shares of Common Stock issuable upon
     the conversion of such share or shares of Series B Convertible Preferred
     Stock. To the extent permitted by law, such conversion shall be deemed to
     have been effected and the Conversion Price shall be determined as of the
     close of business on the date on which such written notice shall have been
     received by the Corporation and the certificate or certificates for such
     share or shares shall have been surrendered as aforesaid, and at such time
     the rights of the holder of such share or shares of Series B Convertible
     Preferred Stock shall cease, and the person or persons in whose name or
     names any certificate or certificates for shares of Common Stock shall be
     issuable upon such conversion shall be deemed to have become the holder or
     holders of record of the shares represented thereby.

          3C.  Fractional Shares; Dividends; Partial Conversion.  No fractional
               ------------------------------------------------                
     shares shall be issued upon conversion of the Series B Convertible
     Preferred Stock into Common Stock and the number of shares of Common Stock
     to be issued shall be rounded to the nearest whole share. In case the
     number of shares of Series B Convertible Preferred Stock represented by the
     certificate or certificates surrendered pursuant to Subsection 3A exceeds
     the number of shares converted, the Corporation shall upon such conversion,
     execute and deliver to the holder thereof, at the expense of the
     Corporation, a new certificate or certificates for the number of shares of
     Series B Convertible Preferred Stock represented by the certificate or
     certificates surrendered which are not to be converted.

          3D.  Adjustments to Conversion Price for Stock Dividends and
               -------------------------------------------------------
     Combinations or Subdivisions of Common Stock.  If the Company at any time
     --------------------------------------------                             
     or from time to time while shares of Series B Convertible Preferred Stock
     are issued and outstanding shall declare or pay, without consideration, any
     dividend on Common Stock payable in Common Stock, or shall effect a
     subdivision of the outstanding shares of Common Stock into a greater number
     of shares of Common Stock (by stock split, reclassification or otherwise
     than by payment of a dividend in Common Stock or in any right to acquire
     Common Stock), or if the outstanding shares of Common Stock shall be
     combined or consolidated, by reclassification or otherwise, into a lesser
     number of shares of Common Stock, then the Conversion Price for the Series
     B Convertible Preferred Stock in effect immediately before such event
     shall, concurrently with the effectiveness of such event, be
     proportionately decreased or increased, as appropriate. If the Company
     shall declare or pay, without consideration, any dividend on Common Stock
     payable in any right to acquire Common Stock for no consideration, then the
     Company shall be deemed to have made a dividend payable in Common Stock in
     an amount of shares equal to the maximum number of shares issuable upon
     exercise of such rights to acquire Common Stock.

          3E.  Adjustments for Reclassification and Reorganization.   If Common
               ---------------------------------------------------             
     Stock issuable upon conversion of the Series B Convertible Preferred Stock
     shall be changed into the same or a different number of shares of any other
     class or classes of stock, whether by capital reorganization,
     reclassification or otherwise (other than a subdivision or combination of
     shares provided for in the preceding paragraph), the Conversion Price then
     in effect shall, concurrently with the effectiveness of such reorganization
     or reclassification, be proportionately adjusted so that the Series B
     Convertible Preferred Stock shall be convertible into, in lieu of the
     number of shares of Common Stock which the holders would otherwise have
     been entitled to receive, a number of shares of such other class or classes
     of stock equivalent to the number of shares of Common Stock that would have
     been subject to

                                      34
<PAGE>
 
     receipt by the holders upon conversion of the Series B Convertible
     Preferred Stock immediately before that change.

          3F.  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) or other distribution, any right to subscribe
     for, purchase or otherwise acquire any shares of stock of any class or any
     other securities or property, or to receive any other right, the
     Corporation shall send by mail or courier against receipt to each holder of
     Series B Convertible Preferred Stock, at least ten (10) days prior to the
     date specified therein, a notice specifying the date on which any such
     record is to be taken for the purpose of such dividend, distribution or
     right, and the amount and character of such dividend, distribution or
     right.

          3G.  Notice of Adjustment.  Upon any adjustment of the Conversion
               --------------------                                        
     Price, then and in each such case the Corporation shall give written notice
     thereof by first class mail, postage prepaid, addressed to each holder of
     shares of Series B Convertible Preferred Stock at the address of such
     holder as shown on the books of the Corporation, which notice shall be
     signed by the principal financial officer (or independent public
     accountant(s) of national standing) and shall state the Conversion Price
     resulting from such adjustment, setting forth in reasonable detail the
     method of calculation and the facts upon which such calculation is based.

          3H.  Other Notices.  In case at any time:
               -------------                       

          (1)  the Corporation shall declare any dividend upon its Common Stock
     payable in cash or stock or make any other distribution to the holders of
     its Common Stock;

          (2)  the Corporation shall offer for subscription pro rata to the
                                                            --- ----       
     holders of its Common Stock any additional shares of stock of any class or
     other rights;

          (3)  there shall be any capital reorganization or reclassification of
     the capital stock of the Corporation, or a consolidation or merger of the
     Corporation with, or a sale of all or substantially all its assets to,
     another corporation; or

          (4)  there shall be a voluntary or involuntary dissolution,
     liquidation or winding up of the Corporation;

     then, in any one or more of said cases, the Corporation shall give, by
     first class mail, postage prepaid, addressed to each holder of any shares
     of Series B Convertible Preferred Stock at the address of such holder as
     shown on the books of the Corporation, (a) at least 15 days prior written
     notice of the date on which the books of the Corporation shall close or a
     record shall be taken for such dividend, distribution or subscription
     rights or for determining rights to vote in respect of any such
     reorganization, reclassification, consolidation, merger, sale, dissolution,
     liquidation or winding up, and (b) in the case of any such reorganization,
     reclassification, consolidation, merger, sale, dissolution, liquidation or
     winding up, at least 15 days prior written notice of the date when the same
     shall take place. Such notice in accordance with the foregoing clause (a)
     shall also

                                      35
<PAGE>
 
     specify, in the case of any such dividend, distribution or subscription
     rights, the date on which the holders of Common Stock shall be entitled
     thereto, and such notice in accordance with the foregoing clause (b) shall
     also specify the date on which the holders of Common Stock shall be
     entitled to exchange their Common Stock for securities or other property
     deliverable upon such reorganization, reclassification consolidation,
     merger, sale, dissolution, liquidation or winding up, as the case may be.

          3I.  Stock to be Reserved.  The Corporation will at all times reserve
               --------------------                                            
     and keep available out of its authorized but unissued Common Stock solely
     for the purpose of issuance upon the conversion of the Series B Convertible
     Preferred Stock as herein provided, such number of shares of Common Stock
     as shall then be issuable upon the conversion of all outstanding shares of
     Series B Convertible Preferred Stock, including shares issuable pursuant to
     Section 3A above. If at any time the number of authorized but unissued
     shares of Common Stock shall not be sufficient to effect the conversion of
     all then outstanding shares of the Series B Convertible Preferred Stock,
     the Corporation will take such corporate action as may, in the opinion of
     counsel, be necessary to increase its authorized but unissued shares of the
     Common Stock to such number of shares as shall be sufficient for such
     purposes, including, without limitation, engaging in best efforts to obtain
     the requisite stockholder approval of any necessary amendment to these
     provisions. All shares of Common Stock which shall be so issued shall be
     duly and validly issued and fully paid and nonassessable and free from all
     taxes, liens and charges arising out of or by reason of the issue thereof
     and, without limiting the generality of the foregoing, the Corporation
     covenants that it will from time to time take all such action as may be
     requisite to assure that the par value per share of the Common Stock is at
     all times equal to or less than the effective Conversion Price. The
     Corporation will take all such action within its control as may be
     necessary on its part to assure that all such shares of Common Stock may be
     so issued without violation of any applicable law or regulation, or of any
     requirements of any national securities exchange upon which the Common
     Stock of the Corporation may be listed. The Corporation will not take any
     action which results in any adjustment of the Conversion Price if after
     such action the total number of shares of Common Stock issued and
     outstanding and thereafter issuable upon exercise of all options and
     conversion of Convertible Securities, including upon conversion of the
     Series B Convertible Preferred Stock, would exceed the total number of
     shares of Common Stock then authorized by the Corporation's Amended and
     Restated Certificate of Incorporation.

          3J.  No Reissuance of Series B Convertible Preferred Stock.  Shares of
               -----------------------------------------------------            
     Series B Preferred Stock that are converted into shares of Common Stock as
     provided herein shall be permanently retired and shall not under any
     circumstances be reissued; and the Corporation may from time to time take
     such appropriate corporate action as may be necessary to reduce the number
     of authorized shares of Series B Convertible Preferred Stock accordingly.

          3K.  Issue Tax.  The issuance of certificates for shares of Common
               ---------                                                    
     Stock upon conversion of the Series B Convertible Preferred Stock shall be
     made without charge to the holders thereof for any issuance tax in respect
     thereof, provided that the Corporation shall not be required to pay any tax
     which may be payable in respect of any transfer involved in the issuance
     and delivery of any certificate in a name other than that of the holder of
     the Series B Convertible Preferred Stock which is being converted.


                                      36
<PAGE>
 
          3L.  Definition of Common Stock. As used in this Section 3, the term
               --------------------------                                     
     "Common Stock" shall mean and include the Corporation's authorized Common
     Stock as constituted on the date of filing of this Certificate of
     Designations; provided, however, that such term, when used to describe the
                   --------  -------                                           
     securities receivable upon conversion of shares of the Series B Convertible
     Preferred Stock of the Corporation, shall include only shares designated as
     Common Stock of the Corporation on the date of filing of this Certificate
     of Designations, any shares resulting from any combination or subdivision
     thereof referred to in this Section 3, or in case of any reorganization or
     reclassification of the outstanding shares thereof, the stock, securities
     or assets provided for in this Section 3.

     4.   Redemption.  The Series B Convertible Preferred Stock may be 
          ----------                                                   
     redeemed by the Corporation at any time in exchange for a cash payment for
     each share of Series B Convertible Preferred Stock equal to the Original
     Issuance Price multiplied by one hundred and ten percent (110%). In
     addition to the foregoing cash payment, the Corporation will issue a number
     of warrants to purchase Common Stock (each, a "Redemption Warrant") equal
     to 2.5 multiplied by the number of shares of Series B Convertible Preferred
     Stock then held by the holder. Each Redemption Warrant will be
     substantially in the form of Exhibit A attached hereto. The cash payment
                                  ---------       
     and additional warrant to be issued upon redemption are collectively
     referred to as the "Redemption Price." Redemption Warrants issued shall be
     exercisable at a price equal to the sum of (a) the Closing Bid Price
     (subject to adjustment under the same circumstances as which the Conversion
     Price would be adjusted) of the Common Stock for the Trading Day prior to
     the date on which the Corporation redeems shares of Series B Convertible
     Preferred Stock (the "Redemption Date), (b) plus $.25. Such Redemption
     Warrants shall be exercisable for a period of thirty six (36) months
     subsequent to their issuance and will contain all customary provisions. The
     Company will file a registration statement within sixty (60) days of the
     issuance of the Redemption Warrants so as to permit a resale of the shares
     of Common Stock underlying the Redemption Warrants.

          Not fewer than fifteen (15) days before the Redemption Date, written
     notice shall be given by registered or certified first class mail, return
     receipt requested, by a nationally recognized courier service, postage
     prepaid, or by personal delivery, addressed to the holders of record of the
     Series B Convertible Preferred Stock, such notice to be addressed to each
     such stockholder at his post office address as shown by the records of the
     Corporation, specifying the number of shares to be redeemed, the Redemption
     Price and the place and date of such redemption, which date shall not be a
     day on which banks in New York City are required or authorized to close. If
     such notice of redemption shall have been duly given and if on or before
     such Redemption Date the funds and securities necessary for redemption
     shall have been set aside so as to be and continue to be available
     therefor, then, notwithstanding that any certificate for shares of Series B
     Convertible Preferred Stock to be redeemed shall not have been surrendered
     for cancellation, after the close of business on such Redemption Date, the
     shares so called for redemption shall no longer be deemed outstanding, the
     dividends thereon shall cease to accrue, and all rights with respect to
     such shares shall forthwith after the close of business on the Redemption
     Date, cease, except only the right of the holders thereof to receive, upon
     presentation of the certificate representing shares so called for
     redemption, the Redemption Price therefor.


                                      37
<PAGE>
 
          Any shares of the Series B Convertible Preferred Stock redeemed
     pursuant to this Section 4 or otherwise acquired by the Corporation in any
     manner whatsoever shall be permanently retired and shall not under any
     circumstances be reissued; and the Corporation may from time to time take
     such appropriate corporate action as may be necessary to reduce the number
     of authorized shares of Series B Convertible Preferred Stock accordingly.

     5.   Voting - Series B Convertible Preferred Stock.  Except as required by
          ---------------------------------------------                        
     law or in Section 6 herein, all shares of Series B Convertible Preferred
     Stock shall be non-voting, and the holders thereof shall not be entitled to
     vote on any matters until such shares of Series B Convertible Stock are
     converted into shares of Common Stock. In addition, any shares of Series A
     Convertible Preferred Stock or Series B Convertible Preferred Stock held by
     the Corporation or any entity controlled by the Corporation shall not have
     voting rights hereunder and shall not be counted in determining the
     presence of quorum.

     6.   Restrictions.  At any time when shares of Series B Convertible 
          ------------        
     Preferred Stock are outstanding, and in addition to any other vote of
     stockholders required by law or by the Amended and Restated Certificate of
     Incorporation, without the prior consent of the holders of a majority of
     the outstanding Series B Convertible Preferred Stock, given in person or by
     proxy, either in writing or at a special meeting called for that purpose,
     at which meeting the holders of the shares of such Series B Convertible
     Preferred Stock shall vote together as a class, the Corporation will not:
     (i) issue any class or series of equity security ranking senior to the
     Series B Convertible Preferred Stock as to payments on liquidation or
     dividends of the Company; or (ii) amend the Amended and Restated
     Certificate of Incorporation or Bylaws in any manner that would impair or
     reduce the rights of the holders of the Series B Convertible Preferred
     Stock.

     7.   No Waiver.  Except as otherwise modified or provided for herein, the
          ---------                                                           
     holders of Series B Convertible Preferred Stock shall also be entitled to,
     and shall not be deemed to have waived, any other applicable rights granted
     to such holders under the Delaware General Corporation Law.

     8.   No Impairment.  The Corporation will not, by amendment of its Amended
          -------------                                                        
     and Restated Certificate of Incorporation or this Certificate of
     Designations through any reorganization, transfer of assets, 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 will at all time
     in good faith assist in the carrying out of all the provisions of this
     Certificate of Designations and in the taking of all such action as may be
     necessary or appropriate in order to protect the conversion rights and
     liquidation preferences granted hereunder of the holders of the Series B
     Convertible Preferred Stock against impairment.

     9.   Automatic Conversion.  Subject to the limitations on conversion set
          ---------------------                                              
     forth herein, each share of Series B Convertible Preferred Stock issued and
     outstanding on February 5 , 2002 automatically shall be converted into
     shares of Common Stock at the then effective Conversion Price in accordance
     with, and subject to, the provisions of Section 3A hereof.


                                      38
<PAGE>
 
          IN WITNESS WHERFOF, this Certificate of Designations has been executed
by the Corporation by its President as of this 5th day of February, 1999.


                                   BOSTON LIFE SCIENCES, INC.


                                       
                                   By: /s/ S. David Hillson                 
                                      -------------------------------------
                                       S. David Hillson
                                       President and Chief Executive Officer


                                      39
<PAGE>
 
                            CERTIFICATE OF DECREASE

                                      OF

                     SERIES B CONVERTIBLE PREFERRED STOCK

                                      OF

                          BOSTON LIFE SCIENCES, INC.


       (PURSUANT TO SECTION 151 OF THE DELAWARE GENERAL CORPORATION LAW)

          __________________________________________________________


          BOSTON LIFE SCIENCES, INC., a corporation organized and existing under
the laws of the State of Delaware (the "Corporation"), hereby certifies that,
pursuant to Sections 141 and 151 of the Delaware General Corporation Law and the
authority vested in the Board of Directors of the Corporation by Article Fourth
of the Amended and Restated Certificate of Incorporation, the Board of Directors
of the Corporation, by resolution dated February 17, 1999, at a telephonic
meeting, did authorize and direct that the number of authorized shares of
Preferred Stock designated as Series B Convertible Preferred Stock be reduced
from 475,000 to 227,719, pursuant to the authority granted to them under Section
151(g) of the Delaware General Corporation Law.

          IN WITNESS WHEREOF, this Certificate of Designations has been executed
and filed as of this 18/th/ day of February, 1999.


                                   BOSTON LIFE SCIENCES, INC.            
                                                                        
                                                                        
                                   By:  /s/ Joseph P. Hernon            
                                        -----------------------------   
                                        Joseph P. Hernon                     
                                        Secretary, Vice President and        
                                        Chief Financial Officer               


                                      40
<PAGE>
 
 
              CERTIFICATE OF DESIGNATIONS, PREFERENCES AND RIGHTS

                                      OF

                     SERIES C CONVERTIBLE PREFERRED STOCK

                                      OF

                          BOSTON LIFE SCIENCES, INC.

                        (Pursuant to Section 151 of the
                       Delaware General Corporation Law)

                   _________________________________________


           BOSTON LIFE SCIENCES, INC., a corporation organized and existing
 under the laws of the State of Delaware (the "Corporation"), hereby certifies
 that, pursuant to authority vested in the Board of Directors of the Corporation
 by Article Fourth of the Amended and Restated Certificate of Incorporation of
 the Corporation, the following resolution was adopted as of February 17, 1999
 by the Board of Directors of the Corporation pursuant to Section 141 of the
 Delaware General Corporation Law:

           "RESOLVED that, pursuant to authority vested in the Board of
 Directors of the Corporation by Article Fourth of the Corporation's Amended and
 Restated Certificate of Incorporation, of the total authorized number of
 1,000,000 shares of Preferred Stock, par value $0.01 per share, of the
 Corporation, there shall be designated a series of 475,000 shares that shall be
 issued in and constitute a single series to be known as "Series C Convertible
 Preferred Stock" (hereinafter called the "Series C Convertible Preferred
 Stock").  The shares of Series C Convertible Preferred Stock shares have the
 voting powers, designations, preferences and other special rights, and
 qualifications, limitations and restrictions thereof set forth below:

     1.   Dividends.  The holder of each share of Series C Convertible Preferred
          ---------                                                             
     Stock shall not be entitled to receive dividends in any fixed amount;
     provided, however, the holder of each share of Series C Convertible
     -----------------                                                  
     Preferred Stock shall be entitled to receive such dividends thereon as the
     Board of Directors may declare, if, as and when so declared. Such dividends
     on the Series C Convertible Preferred Stock shall not be cumulative and no
     right to such dividends shall accrue to holders of the Series C Convertible
     Preferred Stock unless and until declared by the Board of Directors. The
     holders of shares of the Series C Convertible Preferred Stock are entitled
     to share equally in any dividend, when, as and if declared by the Board on
     the Common Stock.

     2.   Liquidation.  In the event of any liquidation, dissolution or winding
          -----------                                                          
     up of the Corporation, whether voluntary or involuntary, after payment or
     provision for payment of debts and other liabilities of the Corporation,
     the holders of the shares of Series A Convertible Preferred Stock , the
     holders of shares of Series B Convertible Preferred Stock, and the holders
     of shares of Series C Convertible Preferred Stock, before any distribution
     or payment is made upon any Common Stock, shall be entitled to receive on a
     pari-passu basis in accordance with their respective Preference Amounts (as
     ----------
     hereinafter

                                      41
<PAGE>
 
     defined), (i) with respect to each share of Series A Convertible Preferred
     Stock an amount ("Series A Preference Amount") equal to the sum of (A)
     $130.00 (subject to equitable adjustment to reflect stock splits, stock
     combinations, stock dividends, recapitalizations, and like occurrences) and
     (B) all declared but unpaid dividends (if any) payable with respect to such
     shares, and (ii) with respect to each share of Series B Convertible
     Preferred Stock ("Series B Preference Amount") equal to the sum of (A)
     $19.50 (subject to equitable adjustment to reflect stock splits, stock
     dividends, stock combinations, recapitalizations, and like occurrences) and
     (B) all declared but unpaid dividends (if any) payable with respect to such
     shares, and (iii) with respect to each share of Series C Convertible
     Preferred ("Series C Preference Amount", and collectively the Series A
     Preference Amount, the Series B Preference Amount, and the Series C
     Preference Amount are sometimes hereinafter collectively referred to as the
     "Preference Amount") equal to the sum of (A) the "Original Issuance Price"
     per share, which shall mean $19.50 (subject to equitable adjustment to
     reflect stock splits, stock dividends, stock combinations,
     recapitalizations, and like occurrences) and (B) all declared but unpaid
     dividends (if any) payable with respect to such shares.

          If upon such liquidation, dissolution or winding up of the
     Corporation, whether voluntary or involuntary, the assets to be distributed
     among the holders of the Series A Convertible Preferred Stock, the Series B
     Convertible Preferred Stock and the Series C Convertible Preferred Stock of
     the Corporation shall be insufficient to permit payment to the holders of
     the full respective Preference Amount to which they shall be entitled, then
     the entire assets of the Corporation to be so distributed shall be
     distributed ratably among the holders of the Series A Convertible Preferred
     Stock, the Series B Convertible Preferred Stock and the Series C
     Convertible Preferred Stock based on the respective amounts that would be
     payable to them on or with respect to the shares of Series A Convertible
     Preferred Stock, Series B Convertible Preferred Stock and Series C
     Preferred Convertible Stock held by them upon such distribution pursuant to
     this Section. Upon any such liquidation, dissolution or winding up of the
     Corporation after the holders of the Series A Convertible Preferred Stock,
     Series B Convertible Preferred Stock, and Series C Convertible Preferred
     Stock shall have been paid in full in accordance with the rights and
     preferences to which they are entitled, the remaining net assets of the
     Corporation shall be distributed ratably and exclusively to the holders of
     the Common Stock.

          Written notice of such liquidation, dissolution or winding up, stating
     a payment date, the amount of the Preference Amounts and the place where
     said sums shall be payable shall be given by mail, postage prepaid, not
     less than 30 or more than 60 days prior to the payment date stated therein,
     to the holders of record of the Series A Convertible Preferred Stock,
     Series B Convertible Preferred Stock and Series C Convertible Preferred
     Stock and the Common Stock, such notice to be addressed to each stockholder
     at his post office address as shown by the records of the Corporation.
     Notwithstanding Section 3 below, holders of record of the Series C
     Convertible Preferred Stock shall have the right to convert their shares of
     Series C Convertible Preferred Stock into Common Stock at the then
     applicable Conversion Price prior to liquidation pursuant to the formula
     set forth in the first paragraph of Section 3A; holders shall comply with
     the procedures set forth in the fourth paragraph of Section 3A.

          For purposes of this Section with respect to the Series C Convertible
     Preferred Stock, a liquidation, dissolution or winding up of the
     Corporation shall be deemed to be 


                                      42
<PAGE>
 
     occasioned by, or to include, (A) the acquisition of the Corporation by
     another entity by means of any transaction or series of related
     transactions (including, without limitation, any reorganization, merger or
     consolidation, but excluding any merger effected exclusively for the
     purpose of changing the domicile of the Corporation) in which outstanding
     shares of the Corporation are exchanged for securities or other
     consideration issued, or caused to be issued by the acquiring corporation
     or its subsidiary, or (B) a sale, lease, exchange or other transfer (in one
     transaction or a series of transactions) of all or substantially all of the
     assets of the Corporation, unless in each case the Corporation's 
                                ------                 
     stockholders of record as constituted immediately prior to such acquisition
     or sale will, immediately after such acquisition or sale (by virtue of
     securities issued as consideration for the Corporation's acquisition or
     sale or otherwise) hold at least 50% of the voting power of the surviving
     or acquiring entity.

          Whenever the distribution provided for in this Section shall be
     payable in property other than cash, the value of such property shall be
     the fair market value thereof as determined in good faith by not less than
     a majority of the Directors then serving on the Board of Directors of the
     Corporation.

          3.   Conversion.
               ---------- 

          3A.  Right to Convert.  Subject to the terms and conditions of this
               ----------------                                              
     Section 3, the holder of any share or shares of Series C Convertible
     Preferred Stock shall have the right, at its option, to convert any such
     shares of Series C Convertible Preferred Stock into fully paid and
     nonassessable whole shares of Common Stock in accordance with this Section
     3. The holder may convert each share of Series C Convertible Preferred
     Stock into such number of shares of Common Stock as is obtained by dividing
     the Original Issuance Price by the Conversion Price (as hereinafter
     defined). The initial Conversion Price shall be $3.90 (such price defined
     as the "Initial Conversion Price"). The Initial Conversion Price shall be
     subject to adjustment pursuant to Sections 3D and 3E below, with such price
     as last adjusted referred to herein as the "Conversion Price."

          In addition to the conversion rights of the holder outlined above, at
     any time commencing 270 days after the issuance of the Series C Convertible
     Preferred Stock, the holder has the option to convert Series C Convertible
     Preferred Stock at a conversion rate that produces a minimum rate of return
     to the holder of twenty-five percent (25%) in accordance with the formula
     ("Guaranteed Return Formula") set forth below.

          Under the Guaranteed Return Formula, each share of Series C
     Convertible Preferred Stock may be converted into such number of shares of
     Common Stock that produces a total value of Common Stock equal to one
     hundred and twenty five percent (125%) of the Original Issuance Price;
     provided, however, that no share of Series C Convertible Preferred Stock
     --------  -------                                                       
     shall be convertible into less than five (5) or more than ten (10) shares
     of Common Stock.  The price per share to be used in determining such
     additional issuances of Common Stock (if any) will be the average Closing
     Bid Price for the five Trading Days (as defined below) ending on the
     Trading Day that is one Trading Day prior to the date of conversion.  If
     the Corporation determines that the issuance of shares pursuant to this
     paragraph or pursuant to the first paragraph of this Section 3A, or
     pursuant to the first or third paragraph of Section 3A in the Certificate
     of Designations, Rights and Preferences for the Series B Convertible
     Preferred Stock of the Company, 


                                      43
<PAGE>
 
     under applicable NASDAQ Stock Market requirements with respect to certain
     issues of Corporation securities convertible into 20% or more of the
     Corporation's Common Stock, requires stockholder approval, then, prior to
     any such issuance, the Corporation at its option may either (a) redeem the
     Series C Convertible Preferred Stock in accordance with the redemption
     procedures contained in Section 4 herein within fifteen (15) days after
     receipt of the conversion notice relating to the Series C Convertible
     Preferred Stock; or (b) may solicit and obtain within ninety (90) days
     after receipt of the conversion notice relating to the Series C Convertible
     Preferred Stock the necessary stockholder consent before any such shares
     are required to be issued. In the event that the Corporation is unable to
     obtain the necessary stockholder consent pursuant to (b) above within the
     time period allotted, after recommending and seeking such approval in good
     faith, then the corporation shall redeem the Series C Convertible Preferred
     Stock in accordance with the preceding sentence. Following the date on
     which the Securities and Exchange Commission declares effective a
     registration statement that permits the resale of the shares of Common
     Stock underlying the Series C Convertible Preferred Stock and while such
     registration statement remains in effect, in the event the Closing Bid
     Price for the Corporation's Common Stock is at or above $7.00 per share
     (subject to equitable adjustment to reflect stock splits, stock dividends,
     stock combinations, recapitalizations, and like occurrences) for five
     consecutive Trading Days (as defined below), the holder's right to receive
     additional shares of Common Stock upon conversion pursuant to this
     paragraph shall terminate thereafter.

          The rights of conversion in this Section 3 shall be exercised by the
     holder thereof by giving written notice that the holder elects to convert a
     stated number of shares of Series C Convertible Preferred Stock into Common
     Stock and by surrender of a certificate or certificates for the shares so
     to be converted to the Corporation at its principal office (or such other
     office or agency of the Corporation as the Corporation may designate by
     notice in writing to the holder or holders of the Series C Convertible
     Preferred Stock) at any time during its usual business hours on the date
     set forth in such notice, together with a statement of the name or names
     (with address), subject to compliance with applicable laws to the extent
     such designation shall involve a transfer, in which the certificate or
     certificates for shares of Common Stock shall be issued.

          The "Closing Bid Price" for each trading day shall be the reported
     closing bid price on the NASDAQ Small-Cap Market or the NASDAQ National
     Market System (collectively referred to as, "NASDAQ") or, if the Common
     Stock is not quoted on NASDAQ, on the principal national securities
     exchange on which the Common Stock is listed or admitted to trading (based
     on the aggregate dollar value of all securities listed or admitted to
     trading) or, if not listed or admitted to trading on any national
     securities exchange or quoted on NASDAQ, the closing bid price in the over-
     the counter market as furnished by any NASD member firm selected from time
     to time by the Corporation for that purpose, or, if such prices are not
     available, the fair market value set by, or in a manner established by, the
     Board of Directors of the Corporation in good faith. "Trading day" shall
     mean a day on which the national securities exchange or NASDAQ used to
     determine the Closing Bid Price is open for the transaction of business or
     the reporting of trades or, if the Closing Bid Price is not so determined,
     a day on which NASDAQ is open for the transaction of business.


                                      44
<PAGE>
 
          3B.  Issuance of Certificates; Time Conversion Effected.  Subject to
               --------------------------------------------------             
     the limitation on conversion set forth in first sentence of the third
     paragraph of Section 3A, promptly after the receipt by the Corporation of
     the written notice referred to in Subsection 3A and surrender of the
     certificate or certificates for the share or shares of the Series C
     Convertible Preferred Stock to be converted, the Corporation shall issue
     and deliver, or cause to be issued and delivered, to the holder, within
     three (3) business days, registered in such name or names as such holder
     may direct, subject to compliance with applicable laws to the extent such
     designation shall involve a transfer, a certificate or certificates for the
     number of whole shares of Common Stock issuable upon the conversion of such
     share or shares of Series C Convertible Preferred Stock.  To the extent
     permitted by law, such conversion shall be deemed to have been effected and
     the Conversion Price shall be determined as of the close of business on the
     date on which such written notice shall have been received by the
     Corporation and the certificate or certificates for such share or shares
     shall have been surrendered as aforesaid, and at such time the rights of
     the holder of such share or shares of Series C Convertible Preferred Stock
     shall cease, and the person or persons in whose name or names any
     certificate or certificates for shares of Common Stock shall be issuable
     upon such conversion shall be deemed to have become the holder or holders
     of record of the shares represented thereby.

          3C.  Fractional Shares; Dividends; Partial Conversion.  No fractional
               ------------------------------------------------                
     shares shall be issued upon conversion of the Series C Convertible
     Preferred Stock into Common Stock and the number of shares of Common Stock
     to be issued shall be rounded to the nearest whole share. In case the
     number of shares of Series C Convertible Preferred Stock represented by the
     certificate or certificates surrendered pursuant to Subsection 3A exceeds
     the number of shares converted, the Corporation shall upon such conversion,
     execute and deliver to the holder thereof, at the expense of the
     Corporation, a new certificate or certificates for the number of shares of
     Series C Convertible Preferred Stock represented by the certificate or
     certificates surrendered which are not to be converted.


          3D.  Adjustments to Conversion Price for Stock Dividends and
               -------------------------------------------------------
     Combinations or Subdivisions of Common Stock.  If the Company at any time
     --------------------------------------------                             
     or from time to time while shares of Series C Convertible Preferred Stock
     are issued and outstanding shall declare or pay, without consideration, any
     dividend on Common Stock payable in Common Stock, or shall effect a
     subdivision of the outstanding shares of Common Stock into a greater number
     of shares of Common Stock (by stock split, reclassification or otherwise
     than by payment of a dividend in Common Stock or in any right to acquire
     Common Stock), or if the outstanding shares of Common Stock shall be
     combined or consolidated, by reclassification or otherwise, into a lesser
     number of shares of Common Stock, then the Conversion Price for the Series
     C Convertible Preferred Stock in effect immediately before such event
     shall, concurrently with the effectiveness of such event, be
     proportionately decreased or increased, as appropriate.  If the Company
     shall declare or pay, without consideration, any dividend on Common Stock
     payable in any right to acquire Common Stock for no consideration, then the
     Company shall be deemed to have made a dividend payable in Common Stock in
     an amount of shares equal to the maximum number of shares issuable upon
     exercise of such rights to acquire Common Stock.

          3E.  Adjustments for Reclassification and Reorganization.  If Common
               ---------------------------------------------------             
     Stock issuable upon conversion of the Series C Convertible Preferred Stock
     shall be changed into 

                                      45
<PAGE>
 
     the same or a different number of shares of any other class or classes of
     stock, whether by capital reorganization, reclassification or otherwise
     (other than a subdivision or combination of shares provided for in the
     preceding paragraph), the Conversion Price then in effect shall,
     concurrently with the effectiveness of such reorganization or
     reclassification, be proportionately adjusted so that the Series C
     Convertible Preferred Stock shall be convertible into, in lieu of the
     number of shares of Common Stock which the holders would otherwise have
     been entitled to receive, a number of shares of such other class or classes
     of stock equivalent to the number of shares of Common Stock that would have
     been subject to receipt by the holders upon conversion of the Series C
     Convertible Preferred Stock immediately before that change.

          3F.  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) or other distribution, any right to subscribe
     for, purchase or otherwise acquire any shares of stock of any class or any
     other securities or property, or to receive any other right, the
     Corporation shall send by mail or courier against receipt to each holder of
     Series C Convertible Preferred Stock, at least ten (10) days prior to the
     date specified therein, a notice specifying the date on which any such
     record is to be taken for the purpose of such dividend, distribution or
     right, and the amount and character of such dividend, distribution or
     right.

          3G.  Notice of Adjustment.  Upon any adjustment of the Conversion
               --------------------                                        
     Price, then and in each such case the Corporation shall give written notice
     thereof by first class mail, postage prepaid, addressed to each holder of
     shares of Series C Convertible Preferred Stock at the address of such
     holder as shown on the books of the Corporation, which notice shall be
     signed by the principal financial officer (or independent public
     accountant(s) of national standing) and shall state the Conversion Price
     resulting from such adjustment, setting forth in reasonable detail the
     method of calculation and the facts upon which such calculation is based.

          3H.  Other Notices.  In case at any time:
               -------------                       

          (1)  the Corporation shall declare any dividend upon its Common Stock
     payable in cash or stock or make any other distribution to the holders of
     its Common Stock;

          (2)  the Corporation shall offer for subscription pro rata to the
                                                            --- ----       
     holders of its Common Stock any additional shares of stock of any class or
     other rights;

          (3)  there shall be any capital reorganization or reclassification of
     the capital stock of the Corporation, or a consolidation or merger of the
     Corporation with, or a sale of all or substantially all its assets to,
     another corporation; or

          (4)  there shall be a voluntary or involuntary dissolution,
     liquidation or winding up of the Corporation;

     then, in any one or more of said cases, the Corporation shall give, by
     first class mail, postage prepaid, addressed to each holder of any shares
     of Series C Convertible Preferred 


                                      46
<PAGE>
 
     Stock at the address of such holder as shown on the books of the
     Corporation, (a) at least 15 days prior written notice of the date on which
     the books of the Corporation shall close or a record shall be taken for
     such dividend, distribution or subscription rights or for determining
     rights to vote in respect of any such reorganization, reclassification,
     consolidation, merger, sale, dissolution, liquidation or winding up, and
     (b) in the case of any such reorganization, reclassification,
     consolidation, merger, sale, dissolution, liquidation or winding up, at
     least 15 days prior written notice of the date when the same shall take
     place. Such notice in accordance with the foregoing clause (a) shall also
     specify, in the case of any such dividend, distribution or subscription
     rights, the date on which the holders of Common Stock shall be entitled
     thereto, and such notice in accordance with the foregoing clause (b) shall
     also specify the date on which the holders of Common Stock shall be
     entitled to exchange their Common Stock for securities or other property
     deliverable upon such reorganization, reclassification consolidation,
     merger, sale, dissolution, liquidation or winding up, as the case may be.

          3I.  Stock to be Reserved.  The Corporation will at all times reserve
               --------------------                                            
     and keep available out of its authorized but unissued Common Stock solely
     for the purpose of issuance upon the conversion of the Series C Convertible
     Preferred Stock as herein provided, such number of shares of Common Stock
     as shall then be issuable upon the conversion of all outstanding shares of
     Series C Convertible Preferred Stock, including shares issuable pursuant to
     Section 3A above. If at any time the number of authorized but unissued
     shares of Common Stock shall not be sufficient to effect the conversion of
     all then outstanding shares of the Series C Convertible Preferred Stock,
     the Corporation will take such corporate action as may, in the opinion of
     counsel, be necessary to increase its authorized but unissued shares of the
     Common Stock to such number of shares as shall be sufficient for such
     purposes, including, without limitation, engaging in best efforts to obtain
     the requisite stockholder approval of any necessary amendment to these
     provisions. All shares of Common Stock which shall be so issued shall be
     duly and validly issued and fully paid and nonassessable and free from all
     taxes, liens and charges arising out of or by reason of the issue thereof
     and, without limiting the generality of the foregoing, the Corporation
     covenants that it will from time to time take all such action as may be
     requisite to assure that the par value per share of the Common Stock is at
     all times equal to or less than the effective Conversion Price. The
     Corporation will take all such action within its control as may be
     necessary on its part to assure that all such shares of Common Stock may be
     so issued without violation of any applicable law or regulation, or of any
     requirements of any national securities exchange upon which the Common
     Stock of the Corporation may be listed. The Corporation will not take any
     action which results in any adjustment of the Conversion Price if after
     such action the total number of shares of Common Stock issued and
     outstanding and thereafter issuable upon exercise of all options and
     conversion of Convertible Securities, including upon conversion of the
     Series C Convertible Preferred Stock, would exceed the total number of
     shares of Common Stock then authorized by the Corporation's Amended and
     Restated Certificate of Incorporation.

          3J.  No Reissuance of Series C Convertible Preferred Stock.  Shares of
               -----------------------------------------------------            
     Series C Preferred Stock that are converted into shares of Common Stock as
     provided herein shall be permanently retired and shall not under any
     circumstances be reissued; and the Corporation may from time to time take
     such appropriate corporate action as may be 


                                      47
<PAGE>
 
     necessary to reduce the number of authorized shares of Series C Convertible
     Preferred Stock accordingly.

          3K.  Issue Tax.  The issuance of certificates for shares of Common
               ---------                                                    
     Stock upon conversion of the Series C Convertible Preferred Stock shall be
     made without charge to the holders thereof for any issuance tax in respect
     thereof, provided that the Corporation shall not be required to pay any tax
     which may be payable in respect of any transfer involved in the issuance
     and delivery of any certificate in a name other than that of the holder of
     the Series C Convertible Preferred Stock which is being converted.

          3L.  Definition of Common Stock. As used in this Section 3, the term
               --------------------------                                     
     "Common Stock" shall mean and include the Corporation's authorized Common
     Stock as constituted on the date of filing of this Certificate of
     Designations; provided, however, that such term, when used to describe the
                   --------  -------                                           
     securities receivable upon conversion of shares of the Series C Convertible
     Preferred Stock of the Corporation, shall include only shares designated as
     Common Stock of the Corporation on the date of filing of this Certificate
     of Designations, any shares resulting from any combination or subdivision
     thereof referred to in this Section 3, or in case of any reorganization or
     reclassification of the outstanding shares thereof, the stock, securities
     or assets provided for in this Section 3.

     4.   Redemption. The Series C Convertible Preferred Stock may be redeemed
          ----------        
     by the Corporation at any time in exchange for a cash payment for each
     share of Series C Convertible Preferred Stock equal to the Original
     Issuance Price multiplied by one hundred and ten percent (110%). In
     addition to the foregoing cash payment, the Corporation will issue a number
     of warrants to purchase Common Stock (each, a "Redemption Warrant") equal
     to 2.5 multiplied by the number of shares of Series C Convertible Preferred
     Stock then held by the holder. Each Redemption Warrant will be
     substantially in the form of Exhibit A attached hereto. The cash payment
                                  ---------                       
     and additional warrant to be issued upon redemption are collectively
     referred to as the "Redemption Price." Redemption Warrants issued shall be
     exercisable at a price equal to the sum of (a) the Closing Bid Price
     (subject to adjustment under the same circumstances as which the Conversion
     Price would be adjusted) of the Common Stock for the Trading Day prior to
     the date on which the Corporation redeems shares of Series C Convertible
     Preferred Stock (the "Redemption Date), (b) plus $.25. Such Redemption
     Warrants shall be exercisable for a period of thirty six (36) months
     subsequent to their issuance and will contain all customary provisions. The
     Corporation will file a registration statement with the Securities and
     Exchange Commission within sixty (60) days of the issuance of the
     Redemption Warrants so as to permit a resale of the shares of Common Stock
     underlying the Redemption Warrants.

          Not fewer than fifteen (15) days before the Redemption Date, written
     notice shall be given by registered or certified first class mail, return
     receipt requested, by a nationally recognized courier service, postage
     prepaid, or by personal delivery, addressed to the holders of record of the
     Series C Convertible Preferred Stock, such notice to be addressed to each
     such stockholder at his post office address as shown by the records of the
     Corporation, specifying the number of shares to be redeemed, the Redemption
     Price and the place and date of such redemption, which date shall not be a
     day on which banks in New York City are required or authorized to close. If
     such notice of redemption shall have been duly given and if on or before
     such Redemption Date the funds and securities 


                                      48
<PAGE>
 
     necessary for redemption shall have been set aside so as to be and continue
     to be available therefor, then, notwithstanding that any certificate for
     shares of Series C Convertible Preferred Stock to be redeemed shall not
     have been surrendered for cancellation, after the close of business on such
     Redemption Date, the shares so called for redemption shall no longer be
     deemed outstanding, the dividends thereon shall cease to accrue, and all
     rights with respect to such shares shall forthwith after the close of
     business on the Redemption Date, cease, except only the right of the
     holders thereof to receive, upon presentation of the certificate
     representing shares so called for redemption, the Redemption Price
     therefor.

        Any shares of the Series C Convertible Preferred Stock redeemed pursuant
     to this Section 4 or otherwise acquired by the Corporation in any manner
     whatsoever shall be permanently retired and shall not under any
     circumstances be reissued; and the Corporation may from time to time take
     such appropriate corporate action as may be necessary to reduce the number
     of authorized shares of Series C Convertible Preferred Stock accordingly.

     5.   Voting - Series C Convertible Preferred Stock.  Except as required by
          ---------------------------------------------                        
     law or in Section 6 herein, all shares of Series C Convertible Preferred
     Stock shall be non-voting, and the holders thereof shall not be entitled to
     vote on any matters until such shares of Series C Convertible Stock are
     converted into shares of Common Stock.  In addition, any shares of Series A
     Convertible Preferred Stock, Series B Convertible Preferred Stock or Series
     C Convertible Preferred Stock held by the Corporation or any entity
     controlled by the Corporation shall not have voting rights hereunder and
     shall not be counted in determining the presence of quorum.

     6.   Restrictions. At any time when shares of Series C Convertible
          ------------   
     Preferred Stock are outstanding, and in addition to any other vote of
     stockholders required by law or by the Amended and Restated Certificate of
     Incorporation, without the prior consent of the holders of a majority of
     the outstanding Series C Convertible Preferred Stock, given in person or by
     proxy, either in writing or at a special meeting called for that purpose,
     at which meeting the holders of the shares of such Series C Convertible
     Preferred Stock shall vote together as a class, the Corporation will not:
     (i) issue any class or series of equity security ranking senior to the
     Series C Convertible Preferred Stock as to payments on liquidation or
     dividends of the Company; or (ii) amend the Amended and Restated
     Certificate of Incorporation or Bylaws in any manner that would impair or
     reduce the rights of the holders of the Series C Convertible Preferred
     Stock.

     7.   No Waiver.  Except as otherwise modified or provided for herein, the
          ---------                                                           
     holders of Series C Convertible Preferred Stock shall also be entitled to,
     and shall not be deemed to have waived, any other applicable rights granted
     to such holders under the Delaware General Corporation Law.

     8.   No Impairment.  The Corporation will not, by amendment of its Amended
          -------------                                                        
     and Restated Certificate of Incorporation or this Certificate of
     Designations through any reorganization, transfer of assets, 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 will at all times
     in good faith assist in the carrying out of all the provisions of this
     Certificate of 

                                      49
<PAGE>
 
     Designations and in the taking of all such action as may be necessary or
     appropriate in order to protect the conversion rights and liquidation
     preferences granted hereunder of the holders of the Series C Convertible
     Preferred Stock against impairment.

     9.   Automatic Conversion.  Subject to the limitations on conversion set
          ---------------------                                              
     forth herein, each share of Series C Convertible Preferred Stock issued and
     outstanding on February 18, 2002 automatically shall be converted into
     shares of Common Stock at the then effective Conversion Price in accordance
     with, and subject to, the provisions of Section 3A hereof.


                                      50
<PAGE>
 
          IN WITNESS WHEREOF, this Certificate of Designations has been executed
by the Corporation by its President as of this 18th day of February, 1999.


                           BOSTON LIFE SCIENCES, INC.


                                  
                              By: /s/ Joseph P. Hernon                
                                 ---------------------------------
                                  Joseph P. Hernon
                                  Secretary, Vice President and
                                  Chief Financial Officer


                                      51

<PAGE>
 
                                                                    EXHIBIT 23.1

                       CONSENT OF INDEPENDENT ACCOUNTANTS
    
We hereby consent to the incorporation by reference in the Registration
Statements on Forms S-8 (File Nos. 33-98104 and 33-98138) and in the Prospectus
constituting part of the Registration Statements on Forms S-3 (SEC File Nos. 
333-02730 and 333-08993) of Boston Life Sciences, Inc. and its subsidiaries (the
"Company") of our report dated March 11, 1999 appearing on page 21 of the
Company's Annual Report on Form 10-K for the year ended December 31, 1998.     



                                                      PricewaterhouseCoopers LLP
Boston, Massachusetts
March 15, 1999

<TABLE> <S> <C>

<PAGE>
 
<ARTICLE> 5
<LEGEND>
This schedule contains summary financial information extracted from financial
statements as reported on Form 10-K and is qualified in its entirety by
reference to such financial statements.
</LEGEND>
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-START>                             JAN-01-1998
<PERIOD-END>                               DEC-31-1998
<CASH>                                          71,834
<SECURITIES>                                 7,837,992
<RECEIVABLES>                                        0
<ALLOWANCES>                                         0
<INVENTORY>                                          0
<CURRENT-ASSETS>                             8,478,425
<PP&E>                                         262,958
<DEPRECIATION>                                 248,541
<TOTAL-ASSETS>                              12,269,048
<CURRENT-LIABILITIES>                        1,734,199
<BONDS>                                              0
                                0
                                        170
<COMMON>                                       132,770
<OTHER-SE>                                  10,401,909
<TOTAL-LIABILITY-AND-EQUITY>                12,269,048
<SALES>                                              0
<TOTAL-REVENUES>                                     0
<CGS>                                                0
<TOTAL-COSTS>                                7,682,406
<OTHER-EXPENSES>                             (785,382)
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                            (6,897,024)
<INCOME-TAX>                                         0
<INCOME-CONTINUING>                        (6,897,024)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                               (6,897,024)
<EPS-PRIMARY>                                   (0.52)
<EPS-DILUTED>                                   (0.52)
        


</TABLE>


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