PROCEPT INC
SC 13D, 1997-07-10
BIOLOGICAL PRODUCTS, (NO DIAGNOSTIC SUBSTANCES)
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                       SECURITIES AND EXCHANGE COMMISSION

                             WASHINGTON, D.C. 20549


                                  SCHEDULE 13D

                    Under the Securities Exchange Act of 1934


                              Procept Incorporated
                                (Name of Issuer)


                     Common Stock, par value $.001 per share
                         (Title of Class of Securities)

                                  742 683 10 5
                                 (CUSIP Number)


                    Paramount Capital Asset Management, Inc.
                         c/o Lindsay A. Rosenwald, M.D.
                               787 Seventh Avenue
                               New York, NY 10019
                                 (212) 554-4300

                                 with a copy to:

David R. Walner, Esq.                                    Monica C. Lord, Esq.
Paramount Capital Asset                                  Kramer, Levin,
   Management, Inc.                                        Naftalis & Frankel
787 Seventh Avenue                                       919 Third Avenue
New York, NY 10019                                       New York, NY  10022
(212) 554-4372                                           (212) 715-9100

       (Name, Address and Telephone Number of Person Authorized to Receive
                           Notices and Communications)


                                  June 30, 1997
             (Date of Event which Requires Filing of this Statement)



If the filing person has previously  filed a statement on Schedule 13G to report
the  acquisition  which  is the  subject  of  this  Statement  because  of  Rule
13d-1(b)(3) or (4), check the following: [_]


                               Page 1 of 14 Pages


<PAGE>

- -------------------------------                     ----------------------------
    CUSIP No. 742 683 10 5             13D               Page 2 of 14 Pages
- -------------------------------                     ----------------------------
1) NAME OF REPORTING PERSON
   S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
   
   Paramount Capital Asset Management
- --------------------------------------------------------------------------------
2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP       (a)    [_]
                                                          (b)    [_]
- --------------------------------------------------------------------------------
3) SEC USE ONLY

- --------------------------------------------------------------------------------
4) SOURCE OF FUNDS*
                   
   00 (see Item 3)
- --------------------------------------------------------------------------------
5) CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
   PURSUANT TO ITEMS 2(d) OR 2(e)                          [_]
- --------------------------------------------------------------------------------
6) CITIZENSHIP OR PLACE OF ORGANIZATION

   Delaware
- --------------------------------------------------------------------------------
                   7)   SOLE VOTING POWER
                    
  NUMBER OF             None
    SHARES        --------------------------------------------------------------
 BENEFICIALLY      8)   SHARED VOTING POWER
   OWNED BY         
EACH REPORTING          16,744,828*
    PERSON        --------------------------------------------------------------
     WITH          9)   SOLE DISPOSITIVE POWER
                    
                        None
                  --------------------------------------------------------------
                  10)   SHARED DISPOSITIVE POWER
                    
                        16,744,828*
- --------------------------------------------------------------------------------
11)      AGGREGATE  AMOUNT  BENEFICIALLY  OWNED BY EACH REPORTING PERSON 
         16,744,828*
- --------------------------------------------------------------------------------
12)      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*

- --------------------------------------------------------------------------------
13)      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
         55.0%*
- --------------------------------------------------------------------------------
14)      TYPE OF REPORTING PERSON*
         CO
- --------------------------------------------------------------------------------


* Consists of (i) 5,973,334 shares of Common Stock, which are presently votable,
and (ii)  10,771,494  shares of Common Stock  issuable upon exercise of warrants
and conversion of notes, which, accordingly, are not presently votable.


<PAGE>

- -------------------------------                     ----------------------------
    CUSIP No. 742 683 10 5             13D               Page 3 of 14 Pages
- -------------------------------                     ----------------------------
1) NAME OF REPORTING PERSON
   S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

   Aries Domestic Fund, L.P.
- --------------------------------------------------------------------------------
2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP       (a)    [_]
                                                          (b)    [_]
- --------------------------------------------------------------------------------
3) SEC USE ONLY

- --------------------------------------------------------------------------------
4) SOURCE OF FUNDS*

   00 (see Item 3)
- --------------------------------------------------------------------------------
5) CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
   PURSUANT TO ITEMS 2(d) OR 2(e)                          [_]
- --------------------------------------------------------------------------------
6) CITIZENSHIP OR PLACE OF ORGANIZATION

   Delaware
- --------------------------------------------------------------------------------
                   7)   SOLE VOTING POWER
                    
  NUMBER OF             None
    SHARES        --------------------------------------------------------------
 BENEFICIALLY      8)   SHARED VOTING POWER
   OWNED BY         
EACH REPORTING          5,860,690*
    PERSON        --------------------------------------------------------------
     WITH          9)   SOLE DISPOSITIVE POWER
                    
                        None
                  --------------------------------------------------------------
                  10)   SHARED DISPOSITIVE POWER
                    
                        5,860,690*
- --------------------------------------------------------------------------------
11)      AGGREGATE  AMOUNT  BENEFICIALLY  OWNED BY EACH REPORTING PERSON 
         5,860,690*
- --------------------------------------------------------------------------------
12)      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*

- --------------------------------------------------------------------------------
13)      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
         19.2%*
- --------------------------------------------------------------------------------
14)      TYPE OF REPORTING PERSON*
         PN
- --------------------------------------------------------------------------------


* Consists of (i) 2,090,667 shares of Common Stock, which are presently votable,
and (ii) 3,770,023 shares of Common Stock issuable upon exercise of warrants and
conversion of notes, which, accordingly, are not presently votable.


<PAGE>

- -------------------------------                     ----------------------------
    CUSIP No. 742 683 10 5             13D               Page 4 of 14 Pages
- -------------------------------                     ----------------------------
1) NAME OF REPORTING PERSON
   S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

   The Aries Trust
- --------------------------------------------------------------------------------
2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP       (a)    [_]
                                                          (b)    [_]
- --------------------------------------------------------------------------------
3) SEC USE ONLY

- --------------------------------------------------------------------------------
4) SOURCE OF FUNDS*

   00 (see Item 3)
- --------------------------------------------------------------------------------
5) CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
   PURSUANT TO ITEMS 2(d) OR 2(e)                          [_]
- --------------------------------------------------------------------------------
6) CITIZENSHIP OR PLACE OF ORGANIZATION

   Cayman Islands
- --------------------------------------------------------------------------------
                   7)   SOLE VOTING POWER
                    
  NUMBER OF             None
    SHARES        --------------------------------------------------------------
 BENEFICIALLY      8)   SHARED VOTING POWER
   OWNED BY         
EACH REPORTING          10,844,138*
    PERSON        --------------------------------------------------------------
     WITH          9)   SOLE DISPOSITIVE POWER
                    
                        None
                  --------------------------------------------------------------
                  10)   SHARED DISPOSITIVE POWER
                    
                        10,844,138*
- --------------------------------------------------------------------------------
11)      AGGREGATE  AMOUNT  BENEFICIALLY  OWNED BY EACH REPORTING PERSON 
         10,844,138*
- --------------------------------------------------------------------------------
12)      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*

- --------------------------------------------------------------------------------
13)      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
         35.7%*
- --------------------------------------------------------------------------------
14)      TYPE OF REPORTING PERSON*
         00 (see Item 3)
- --------------------------------------------------------------------------------


* Consists of (i) 3,882,667 shares of Common Stock, which are presently votable,
and (ii) 7,001,471 shares of Common Stock issuable upon exercise of warrants and
conversion of notes, which, accordingly, are not presently votable.


<PAGE>


- -------------------------------                     ----------------------------
    CUSIP No. 742 683 10 5             13D               Page 5 of 14 Pages
- -------------------------------                     ----------------------------
1) NAME OF REPORTING PERSON
   S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

   Lindsay A. Rosenwald, M.D.
- --------------------------------------------------------------------------------
2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP       (a)    [_]
                                                          (b)    [_]
- --------------------------------------------------------------------------------
3) SEC USE ONLY

- --------------------------------------------------------------------------------
4) SOURCE OF FUNDS*

   00 (see Item 3)
- --------------------------------------------------------------------------------
5) CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
   PURSUANT TO ITEMS 2(d) OR 2(e)                          [_]
- --------------------------------------------------------------------------------
6) CITIZENSHIP OR PLACE OF ORGANIZATION

   United States
- --------------------------------------------------------------------------------
                   7)   SOLE VOTING POWER
                    
  NUMBER OF             None
    SHARES        --------------------------------------------------------------
 BENEFICIALLY      8)   SHARED VOTING POWER
   OWNED BY         
EACH REPORTING          16,744,828*
    PERSON        --------------------------------------------------------------
     WITH          9)   SOLE DISPOSITIVE POWER
                    
                        None
                  --------------------------------------------------------------
                  10)   SHARED DISPOSITIVE POWER
                    
                        16,744,828*
- --------------------------------------------------------------------------------
11)      AGGREGATE  AMOUNT  BENEFICIALLY  OWNED BY EACH REPORTING PERSON 
         16,744,828*
- --------------------------------------------------------------------------------
12)      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*

- --------------------------------------------------------------------------------
13)      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
         55.0%*
- --------------------------------------------------------------------------------
14)      TYPE OF REPORTING PERSON*
         IN
- --------------------------------------------------------------------------------


* Consists of (i) 5,973,334 shares of Common Stock, which are presently votable,
and (ii)  10,771,494  shares of Common Stock  issuable upon exercise of warrants
and conversion of notes, which, accordingly, are not presently votable.


<PAGE>



Item 1.   Security and Issuer.

     (a)  This Statement on Schedule 13D (the "Statement") relates to the Common
          Stock, $.01 par value (the "Common Stock") of Procept Incorporated,  a
          Delaware  corporation (the "Issuer").  The principal executive offices
          of  the  Issuer  are  located  at  840  Memorial   Drive,   Cambridge,
          Massachusetts 02139.

Item 2.   Identity and Background.

          Names of Persons Filing:

     (a)  This  statement  is  filed  on  behalf  of  Paramount   Capital  Asset
          Management,  Inc.  ("Paramount  Capital"),  Aries Domestic Fund,  L.P.
          ("Aries Domestic"), The Aries Trust ("Aries Trust") and Dr. Lindsay A.
          Rosenwald (collectively,  "Reporting Persons"). See attached Exhibit A
          which is a copy of their  agreement in writing to file this  statement
          jointly on behalf of each of them.

     (b)  The business  address of  Paramount  Capital,  Aries  Domestic and Dr.
          Rosenwald  is 787  Seventh  Avenue,  44th Floor,  New York,  New York,
          10019.  The  business  address  for  Aries  Trust  is c/o  MeesPierson
          (Cayman) Limited, P.O. Box 2003, British American Centre, Phase 3, Dr.
          Roy's Drive, George Town, Grand Cayman.

     (c)  Dr.  Rosenwald  is an  investment  banker,  venture  capitalist,  fund
          manager and sole shareholder of  Paramount  Capital,/1/ a Subchapter S
          corporation  incorporated in the State of Delaware.  Paramount Capital
          is the  General  Partner of Aries  Domestic,/2/ a limited  partnership
          incorporated in Delaware.  Paramount Capital is the Investment Manager
          to Aries Trust,/3/ a Cayman Islands Trust.

     (d)  Dr. Rosenwald,  Paramount Capital,  Aries Domestic and Aries Trust and
          their respective  officers,  directors,  general partners,  investment
          managers,  and trustees  have not,  during the five years prior to the
          date  hereof,  been  convicted  in a  criminal  proceeding  (excluding
          traffic violations or similar misdemeanors).

     (e)  Dr. Rosenwald,  Paramount Capital,  Aries Domestic and Aries Trust and
          their respective  officers,  directors,  general partners,  investment
          managers,  and trustees have not been,  during the five years prior to
          the date  hereof,  parties  to a civil  proceeding  of a  judicial  or
          administrative  body of competent  jurisdiction,  as a result of which
          such  person was or is subject to a  judgment,  decree or final  order
          enjoining future violations of, or prohibiting or mandating activities
          subject to, Federal or State  securities laws or finding any violation
          with respect to such laws.

     (f)  Dr. Rosenwald is a citizen of the United States.

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

          /1/  Please see attached  Exhibit B indicating the executive  officers
               and  directors of  Paramount  Capital and  providing  information
               called for by Items 2-6 of this statement as to said officers and
               directors. Exhibit B is herein incorporated by reference.
                  
          /2/  Please see attached  Exhibit C indicating the general  partner of
               Aries Domestic and the general partner's  executive  officers and
               directors  and providing  information  called for by Items 2-6 of
               this  statement  as  to  said  general  partners,   officers  and
               directors. Exhibit C is herein incorporated by reference.
                  
          /3/  Please see attached  Exhibit D indicating the investment  manager
               of  the  Aries  Trust  and  the  investment  manager's  executive
               officers and directors and  providing  information  called for by
               Items 2-6 of this  statement  as to said  investment  manager and
               officers  and  directors.  Exhibit  D is herein  incorporated  by
               reference.


                               Page 6 of 14 Pages


<PAGE>

Item 3.   Source and Amount of Funds or Other Consideration.

            Pursuant  to a  Securities  Purchase  Agreement  between the Issuer,
            Aries  Domestic  and  Aries  Trust,  dated as of June 30,  1997 (the
            "Purchase Agreement"), Aries Domestic used $1,050,000 of its general
            funds to purchase  2,090,667  shares of Common  Stock of the Issuer,
            $70,000  principal  amount of 12%  Senior  Convertible  Notes of the
            Issuer (the "A Notes"), Class A Warrants for the purchase of 959,944
            shares of Common  Stock of the Issuer at an exercise  price equal to
            $0.5859 per share and Class B Warrants for the purchase of 2,660,746
            shares of Common  Stock of the Issuer at an exercise  price equal to
            $0.59 per share,  and the Aries Trust used $1,950,000 of its general
            funds to  purchase  3,882,667  shares of Common  Stock of the Issuer
            (which 3,882,667  shares,  together with Aries Domestic's  2,090,667
            shares of Common Stock are  collectively  the  "Purchased  Common"),
            $130,000 principal amount A Notes, Class A Warrants for the purchase
            of  1,782,752  shares of Common  Stock of the Issuer at an  exercise
            price equal to $0.01 per share and Class B Warrants for the purchase
            of  4,941,386  shares of Common  Stock of the Issuer at an  exercise
            price  equal to  $0.5859  per  share.  Pursuant  to Article 9 of the
            Purchase  Agreement,  Aries Trust and Aries Domestic are entitled to
            receive  additional  shares of Common  Stock of the Issuer  upon the
            occurrence  of  certain  events  (see  Item  6).  The  A  Notes  are
            convertible  upon the holder's  election into either (i) a number of
            shares of Common Stock of the Issuer at an initial  conversion price
            of $.46875 per share,  subject to adjustment  upon the occurrence of
            certain  events,  or (ii) a number of shares of Series A Convertible
            Preferred  Stock at a conversion  price equal to one hundred dollars
            ($100.00)  per share subject to  adjustment  upon the  occurrence of
            certain events.  Section 3 of the A Notes provides that if an A Note
            is not paid in full at maturity and upon the  occurrence of an Event
            of Default  referred to in Section 7 of the A Notes,  in addition to
            other available remedies, up to 10% of the original principal amount
            of such Note is convertible  into a number of shares of Common Stock
            which,  when added to the Common Stock then held,  or issuable  upon
            conversion of the Series A Preferred Stock then held, by the holders
            of A Notes, in the aggregate,  equals 51% of the outstanding  Common
            Stock of the Issuer at a  conversion  price of $.01 per share.  Upon
            the amendment of the Issuer's  Certificate of  Incorporation,  Aries
            Trust and Aries  Domestic  may put their  Common Stock to the Issuer
            for 28,000 shares of Series A Convertible  Preferred Stock.  Each of
            the  Reporting  Persons  disclaims  beneficial  ownership of all the
            Common Stock other than the  respective  Purchased  Common,  if any,
            actually held by such  Reporting  Person.  The  descriptions  of the
            transactions and instruments described herein are qualified in their
            entireties by reference to the actual  agreements  and  instruments,
            copies of which will be attached  hereto as Exhibits E through L (to
            be provided by amendment).

Item 4.   Purpose of Transaction.

          The  Reporting  Persons  acquired  securities  of  the  Issuer  as  an
          investment  in the Issuer.  Except as indicated in this  Schedule 13D,
          the Reporting Persons currently have no plans or proposals that relate
          to or would result in any of the matters  described  in  subparagraphs
          (a) through (j) of Item 4 of Schedule 13D. Pursuant to Section 7.19 of
          the  Purchase  Agreement,  the  Reporting  Persons  have the  right to
          appoint a majority  of the  members of the Board of  Directors  of the
          Issuer;  provided,  however,  that, to the extent the exercise of such
          right  would  violate  Rule  4460(i) of the  National  Association  of
          Securities Dealers' Marketplace Rules, the Reporting Persons shall not
          exercise  such right until the earliest of (i) the date of approval by
          the   stockholders   of   the   Issuer   of  the   transactions   (the
          "Transactions")  contemplated by the Purchase Agreement and the Letter
          of Intent between the Issuer, Paramount Capital, Inc., Aries Trust and
          Aries  Domestic  (the  "Letter  of  Intent"),  (ii) the date that Rule
          4460(i) no longer applies to the  Transactions and (iii) September 30,
          1997 (the earliest such date, the "Approval Date"),  nonetheless,  the
          Reporting  Persons  currently have the right to appoint at least three
          directors or  observers.  In  connection  with the  Transactions,  Mr.
          Michael S. Weiss  joined the Issuer's Board of Directors  pursuant to
          the Purchase  Agreement  and the Letter of Intent and has been elected
          by the Board of  Directors  of the Issuer to serve as the  Chairman of
          the Issuer's  Board of Directors.  The A Notes provide that the Issuer
          shall not declare or pay any dividend nor make any other  distribution
          or redemption  with respect to any shares of its capital stock without
          the  prior  written  consents  of  Aries  trust  and  Aries  Domestic,
          provided, however, that the Issuer may repurchase shares of its Common
          Stock from officers,


                               Page 7 of 14 Pages


<PAGE>

            Directors  or  employees  of  the  Issuer  upon  any  such  person's
            termination or resignation.  Furthermore,  pursuant to Sections 9.16
            and 9.17 of the Purchase  Agreement,  upon the Approval Date,  Aries
            Trust and Aries  Domestic shall receive  additional  Common Stock of
            the Issuer, in the aggregate,  in an amount which, when added to the
            Common Stock  already  receive  pursuant to the Purchase  Agreement,
            will equal the quotient of (a) $2,800,000  divided by (b) the lesser
            of $0.29 and 50% of various  market based prices (such lesser price,
            the "Approval  Price").  Additionally,  upon the Approval  Date, the
            conversion price of the A Notes and the exercise prices of the class
            A Warrants  and the Class B Warrants  shall be adjusted to equal the
            Approval Price.  Pursuant to Section 7.31 of the Purchase Agreement,
            the Issuer has  covenanted to keep available  sufficient  authorized
            but unissued shares of Common Stock to fulfill its obligations under
            the Purchase Agreement,  and it appears the Issuer will need to take
            such actions as are necessary in order to comply with this covenant.
            The Reporting Persons may from time to time acquire,  or dispose of,
            Common Stock and/or other  securities of the Issuer if and when they
            deem it  appropriate.  The  Reporting  Persons may  formulate  other
            purposes,  plans or proposals  relating to any of such securities of
            the  Issuer  to the  extent  deemed  advisable  in light  of  market
            conditions, investment policies and other factors.

Item 5.   Interest in Securities of the Issuer.

     (a)  As of June 30, 1997,  Dr.  Rosenwald  and Paramount  Capital,  through
          acquisition  of the shares by Aries Trust and Aries  Domestic,  may be
          deemed  beneficially to own 16,744,828 shares or 55.0% of the Issuer's
          Common  Stock,  and Aries  Domestic  and Aries  Trust may be deemed to
          beneficially own the following number of shares of Common Stock:


          Aries Domestic                                5,860,690
          Aries Trust                                   10,884,138

          Each Reporting Person disclaims beneficial ownership of all the Common
          Stock other than the respective  Purchased  Common,  if any,  actually
          held by such  Reporting  Person.  Of the shares of Common Stock of the
          Issuer that the Reporting  Persons may be deemed  beneficially to own,
          only the 5, 973,  334  shares of  Purchased  Common  may be  currently
          voted,  which shares  represent 30.3% of the  outstanding  vote of the
          stockholders  of the Issuer  (10.6% for Aries  Domestic  and 19.7% for
          Aries Truse).

     (b)  Dr.  Rosenwald  and  Paramount  Capital  share the power to vote or to
          direct the vote,  to dispose  or to direct  the  disposition  of those
          shares beneficially owned by each of Aries Domestic and Aries Trust.

     (c)  Other than the purchase of the Common Stock,  the A Notes, the Class A
          Warrants and the Class B Warrants pursuant to the Purchase  Agreement,
          the  Reporting  Persons  have not engaged in any  transactions  in the
          Common Stock of the Issuer in the past 60 days. See Item 3.

     (d) & (e)   Not applicable.



Item 6.   Contracts, Arrangements, Understandings or Relationships
          with respect to Securities of the Issuer

          Pursuant to Article 9 of the Purchase Agreement, Aries Trust and Aries
          Domestic  are  entitled  to  receive  additional  Common  Stock of the
          Issuer:  on June 30, 1998 (the "Reset Date"),  if the Market Price (as
          defined in the Purchase  Agreement)  at such time is less than 140% of
          the  Dilution  Value (as defined in the  Purchase  Agreement)  ("Reset
          Event," resulting in a "Reset  Issuance");  on each anniversary of the
          Reset Date  (resulting  in "Annual  Issuances");  and upon  issuances,
          modifications or sales of Common Stock or securities  convertible into
          Common Stock of the Issuer ("Dilution  Events," resulting in "Dilution
          Issuances"),  with some  exceptions.  Upon the  occurrence  of a Reset
          Event,  the  Dilution  Value is  adjusted  to the  greater  of (i) the
          quotient of the Market  Price as of the Reset Date divided by 1.40 and
          (ii) 25% of the Dilution Value at such time.  Upon the occurrence of a
          Dilution  Event,  the  Dilution  Value is  adjusted to account for the
          dilution  to Common  Stock  holders  caused by the  issuance of Common
          Stock at a  discount  from the  greater of the  Dilution  Value or the
          Market Price at such time. The number of shares that would be issuable
          to Aries Trust and Aries  Domestic  in any Reset  Issuance or Dilution
          Issuance is such  number that the  Dilution  Value  multiplied  by the
          total number of shares of Common Stock  purchased  and received  under
          the Purchase  Agreement  (such number of shares,  the  "Issuance  Base
          Amount")  is the same both  before and after such  Reset  Issuance  or
          Dilution  Issuance.  Each Annual Issuance shall consist of a number of
          shares of Common Stock of the Issuer equal to 10% of the Issuance Base
          Amount at such time.  Aries Trust and Aries  Domestic may assign their
          respective  rights to receive  these  issuances of Common Stock of the
          Issuer under certain  conditions.  Paramount Capital is the investment
          manager of the Aries Trust and the General  Partner of Aries  Domestic
          and in such  capacities  has the authority to make certain  investment
          decisions on behalf of such entities,  including decisions relating to
          the  securities  of the  Issuer.  In  connection  with its  investment
          management duties,  Paramount Capital receives certain management fees
          and performance  allocations  from the Aries Trust and Aries Domestic.
          Dr.   Rosenwald  is  the  sole   shareholder  of  Paramount   Capital.
          Additionally,  on June 29, 1997,  the Issuer  entered into a Letter of
          Intent  with  Paramount   Capital,   Inc.  pursuant  to  which  it  is
          contemplated  that  Paramount  Capital,  Inc.  will  act as  financial
          advisor and placement  agent for the Issuer in future capital  raising
          and  other  strategic   transactions.   Dr.   Rosenwald  is  the  sole
          shareholder and Mr. Weiss is a Senior  Managing  Director of Paramount
          Capital,  Inc. Except as indicated in this 13D and exhibits,  there is
          no contract, arrangement, understanding or


                               Page 8 of 14 Pages


<PAGE>

          relationship  between the Reporting Persons and any other person, with
          respect to any securities of the Issuer.


Item 7.   Material to be Filed as Exhibits:

Exhibit A:  Agreement of Joint Filing of Schedule 13D dated as of July 9, 1997.

Exhibit B:  List of executive  officers and  directors of Paramount  Capital and
            information  called for by Items 2-6 of this  statement  relating to
            said officers and directors.

Exhibit C:  List of  executive  officers  and  directors  of Aries  Domestic and
            information  called for by Items 2-6 of this  statement  relating to
            said officers and directors.

Exhibit D:  List  of  executive  officers  and  directors  of  Aries  Trust  and
            information  called for by Items 2-6 of this  statement  relating to
            said officers and directors.

Exhibit E:  Securities  Purchase  Agreement  dated as of June 30,  1997.  [To be
            provided by amendment.]

Exhibit F:  Senior  Convertible  Note for $70,000 issued to Aries Domestic dated
            June 30, 1997. [To be provided by amendment.]

Exhibit G:  Senior  Convertible  Note for  $130,000  issued to Aries Trust dated
            June 30, 1997. [To be provided by amendment.]

Exhibit H:  Class A Warrant for the  Purchase of 959,944  shares of Common Stock
            issued to Aries  Domestic  dated June 30,  1997.  [To be provided by
            amendment.]

Exhibit I:  Class A Warrant for the Purchase of 1,782,752 shares of Common Stock
            issued to Aries  Trust  dated  June 30,  1997.  [To be  provided  by
            amendment.]

Exhibit J:  Class B Warrant for the Purchase of 2,660,746 shares of Common Stock
            issued to Aries  Domestic  dated  June,  1997.  [To be  provided  by
            amendment.]

Exhibit K:  Class B Warrant for the Purchase of 4,941,386 shares of Common Stock
            issued to Aries  Trust  dated  June 30,  1997.  [To be  provided  by
            amendment.]

Exhibit L:  Letter of Intent dated June 29, 1997. [To be provided by amendment.]


                               Page 9 of 14 Pages


<PAGE>

                                   SIGNATURES

         After  reasonable  inquiry and to the best  knowledge and belief of the
undersigned,  the  undersigned  certify that the  information  set forth in this
statement is true,  complete and correct.  

                                   PARAMOUNT  CAPITAL ASSET  MANAGEMENT, INC.

Dated:   July 10, 1997
         New York, NY              By: /s/Lindsay A. Rosenwald, M.D.
                                       -----------------------------
                                          Lindsay A. Rosenwald, M.D.
                                          President

                                   ARIES DOMESTIC FUND, L.P.
                                   By: Paramount Capital Asset Management, Inc.
                                       General Partner

Dated:   July 10, 1997
         New York, NY              By: /s/Lindsay A. Rosenwald, M.D.
                                       -----------------------------
                                          Lindsay A. Rosenwald, M.D.
                                          President


                                   THE ARIES TRUST
                                   By: Paramount Capital Asset Management, Inc.
                                       Investment Manager

Dated:   July 10, 1997
         New York, NY              By: /s/Lindsay A. Rosenwald, M.D.
                                       -----------------------------
                                       Lindsay A. Rosenwald, M.D.
                                       President

Dated:   July 10, 1997
         New York, NY              By: /s/Lindsay A. Rosenwald, M.D.
                                       -----------------------------
                                       Lindsay A. Rosenwald, M.D.


                               Page 10 of 14 Pages


<PAGE>

                                    EXHIBIT A

                                    AGREEMENT

                          JOINT FILING OF SCHEDULE 13D



         The  undersigned   hereby  agree  jointly  to  prepare  and  file  with
regulatory  authorities  a  Schedule  13D  and  any  future  amendments  thereto
reporting  each  of  the  undersigned's   ownership  of  securities  of  Procept
Incorporated  and hereby  affirm that such Schedule 13D is being filed on behalf
of each of the undersigned.

                                   PARAMOUNT  CAPITAL ASSET  MANAGEMENT, INC.

Dated:   July 9, 1997
         New York, NY              By: /s/Lindsay A. Rosenwald, M.D.
                                       -----------------------------
                                          Lindsay A. Rosenwald, M.D.
                                          President

                                   ARIES DOMESTIC FUND, L.P.
                                   By: Paramount Capital Asset Management, Inc.
                                       General Partner

Dated:   July 9, 1997
         New York, NY              By: /s/Lindsay A. Rosenwald, M.D.
                                       -----------------------------
                                          Lindsay A. Rosenwald, M.D.
                                          President


                                   THE ARIES TRUST
                                   By: Paramount Capital Asset Management, Inc.
                                       Investment Manager

Dated:   July 9, 1997
         New York, NY              By: /s/Lindsay A. Rosenwald, M.D.
                                       -----------------------------
                                       Lindsay A. Rosenwald, M.D.
                                       President

Dated:   July 9, 1997
         New York, NY              By: /s/Lindsay A. Rosenwald, M.D.
                                       -----------------------------
                                       Lindsay A. Rosenwald, M.D.


                               Page 11 of 14 Pages


<PAGE>

                                    EXHIBIT B

         The name and principal occupation or employment, which in each instance
is with Paramount Capital Asset Management,  Inc. ("Paramount  Capital") located
at 787 Seventh Avenue,  44th Floor, New York, New York, 10019, of each executive
officer and director of Paramount Capital is as follows:

                                     PRINCIPAL OCCUPATION
         NAME                           OR EMPLOYMENT
         ----                           -------------

Lindsay A. Rosenwald, M.D.           Chairman of the Board, President of
                                     Paramount Capital Asset Management, Inc.,
                                     Paramount Capital Investments LLC and
                                     Paramount Capital, Inc.

Peter Morgan Kash                    Director of Paramount Capital Asset
                                     Management, Inc., Inc., Senior Managing
                                     Director, Paramount Capital, Inc.

Dr. Yuichi Iwaki                     Director of Paramount Capital Asset
                                     Management, Inc., Inc., Professor, Univer-
                                     sity of Southern California School of Med-
                                     icine


Item 2.

         During  the five  years  prior to the date  hereof,  none of the  above
persons  (to the best of  Paramount  Capital's  knowledge)  was  convicted  in a
criminal  proceeding  (excluding traffic violations or similar  misdemeanors) or
was a party  to a civil  proceeding  of a  judicial  or  administrative  body of
competent jurisdiction,  as a result of which such person was or is subject to a
judgment,  decree or final order enjoining future  violations of, or prohibiting
or mandating  activities subject to, Federal or State securities laws or finding
any violation with respect to such laws.

Items 3-6.

         Please refer to Items 3-6 herein reporting the beneficial ownership.


                               Page 12 of 14 Pages



<PAGE>

                                    EXHIBIT C

         The name and principal  occupation or employment of the General Partner
of Aries Domestic, which is located at 787 Seventh Avenue, 44th Floor, New York,
New York, 10019, is as follows:

                                            PRINCIPAL OCCUPATION
         NAME                                 OR EMPLOYMENT
         ----                                 -------------

Paramount Capital Asset Management, Inc.    General Partner; Investment Manager

         Exhibit B is hereby incorporated by reference.

Item 2.

         During the five years prior to the date  hereof,  the above  person (to
the best of Aries  Domestic's  knowledge)  has not been  convicted in a criminal
proceeding  (excluding traffic violations or similar misdemeanors) and was not a
party to a civil  proceeding of a judicial or  administrative  body of competent
jurisdiction,  as a result of which such person was or is subject to a judgment,
decree  or final  order  enjoining  future  violations  of,  or  prohibiting  or
mandating activities subject to, Federal or State securities laws or finding any
violation with respect to such laws.

Items 3-6.

         Please refer to Items 3-6 herein reporting the beneficial ownership.


                               Page 13 of 14 Pages


<PAGE>


                                    EXHIBIT D

         The name and principal  occupation or employment,  which in the case of
Paramount Capital Asset Management,  Inc. is located at 787 Seventh Avenue, 44th
Floor,  New York, New York,  10019,  of each  executive  officer and director of
Aries Trust is as follows:

                                                 PRINCIPAL OCCUPATION
         NAME                                       OR EMPLOYMENT
         ----                                       -------------

Paramount Capital Asset Management, Inc.         Investment Manager

MeesPierson (Cayman) Limited                     Trustee
P.O. Box 2003
British American Centre
Phase 3, Dr. Roy's Drive
George Town, Grand Cayman

         Exhibit B is hereby incorporated by reference.

Item 2.

         During the five years  prior to the date  hereof,  neither of the above
persons  (to the best of Aries  Trust's  knowledge)  have  been  convicted  in a
criminal  proceeding  (excluding traffic violations or similar  misdemeanors) or
was a party  to a civil  proceeding  of a  judicial  or  administrative  body of
competent jurisdiction,  as a result of which such person was or is subject to a
judgment,  decree or final order enjoining future  violations of, or prohibiting
or mandating  activities subject to, Federal or State securities laws or finding
any violation with respect to such laws.

Items 3-6.

         Please refer to Items 3-6 herein reporting the beneficial ownership.

                               Page 14 of 14 Pages




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