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                     U.S. SECURITIES AND EXCHANGE COMMISSION
                              Washington, DC 20549

                                     FORM 3

            INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

    Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934,
       Section 17(a) of the Public Utility Holding Company Act of 1935 or
               Section 30(h) of the Investment Company Act of 1940

(Print or Type Responses)
________________________________________________________________________________
1.   Name and Address of Reporting Person

     Weiser                           Michael
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   (Last)                            (First)              (Middle)

                             130 East 75/th/ Street
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                                    (Street)

    New York                           NY                   10021
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   (City)                            (State)                (Zip)

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2.   Date of Event Requiring Statement (Month/Day/Year)

     February 21, 2003
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3.   IRS Identification Number of Reporting Person, if an Entity (Voluntary)


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4.   Issuer Name and Ticker or Trading Symbol

     Manhattan Pharmaceuticals, Inc. (f/k/a Atlantic Techology Ventures, Inc.)
     (ATLC.OB)
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5.   Relationship of Reporting Person to Issuer
     (Check all applicable)

     [X]  Director                             [_]  10% Owner
     [_]  Officer (give title below)           [_]  Other (specify below)

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6.   If Amendment, Date of Original (Month/Day/Year)

     February 21, 2003
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7.   Individual or Joint/Group Filing  (Check applicable line)

     [X]  Form Filed by One Reporting Person
     [ ]  Form Filed by More than One Reporting Person

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             TABLE I -- NON-DERIVATIVE SECURITIES BENEFICIALLY OWNED
================================================================================
3. Ownership Form: 2. Amount of Securities Direct (D) or 1. Title of Security Beneficially Owned Indirect (I) 4. Nature of Indirect Beneficial Ownership (Instr. 4) (Instr. 4) (Instr. 5) (Instr. 5) - ------------------------------------------------------------------------------------------------------------------------------------ Common Stock 6,837,806 D - ------------------------------------------------------------------------------------------------------------------------------------ - ------------------------------------------------------------------------------------------------------------------------------------ - ------------------------------------------------------------------------------------------------------------------------------------ - ------------------------------------------------------------------------------------------------------------------------------------ - ------------------------------------------------------------------------------------------------------------------------------------ ====================================================================================================================================
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. (Over) Page 1 of 1 FORM 3 (continued) TABLE II -- DERIVATIVE SECURITIES BENEFICIALLY OWNED (E.G., PUTS, CALLS, WARRANTS, OPTIONS, CONVERTIBLE SECURITIES) ================================================================================
5. Owner- 3. Title and Amount of Securities ship Underlying Derivative Security Form of 2. Date Exercisable (Instr. 4) Derivative and Expiration Date --------------------------------- 4. Conver- Security: (Month/Day/Year) Amount sion or Direct 6. Nature of ---------------------- or Exercise (D) or Indirect Date Expira- Number Price of Indirect Beneficial 1. Title of Derivative Exer- tion of Derivative (I) Ownership Security (Instr. 4) cisable Date Title Shares Security (Instr. 5) (Instr. 5) - ------------------------------------------------------------------------------------------------------------------------------------ - ------------------------------------------------------------------------------------------------------------------------------------ - ------------------------------------------------------------------------------------------------------------------------------------ - ------------------------------------------------------------------------------------------------------------------------------------ - ------------------------------------------------------------------------------------------------------------------------------------ ====================================================================================================================================
Explanation of Responses: /s/ Michael Weiser April 7, 2003 - ---------------------------------------------- ---------------------- **Michael Weiser Date ** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a). Note: File three copies of this Form, one of which must be manually signed. If space provided is insufficient, see Instruction 6 for procedure. Page 2 of 2