Patents by Inventor Laddawan Chuncharprasert

Laddawan Chuncharprasert has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Tricyclic derivatives and their use as anti-cancer agents
    Patent number: 6201129
    Abstract: A compound having the formula wherein R1 is COOR8 wherein R8 is alkyl having from 1 to 10 carbon atoms or aralkyl, the aralkyl having from one to four carbon atoms in the alkyl portion and a carbocyclic or heterocyclic group in the aryl portion; R2 is H, alkyl having from 1 to 10 carbon atoms, or COOR7 wherein R7 is alkyl having from 1 to 10 carbon atoms; R3 is H, alkyl having from 1 to 10 carbon atoms, or COOR8; R4 is H, alkyl having from 1 to 10 carbon atoms, or COOR8; R5 is H, alkyl having from 1 to 10 carbon atoms, aralkyl having from 1 to 4 carbon atoms in the alkyl portion, aryl having from 1 to 10 carbon atoms, acyl having from 1 to 10 carbon atoms, or COOCH3; and R6 is H or COOCH3; and thereof.
    Type: Grant
    Filed: August 1, 1997
    Date of Patent: March 13, 2001
    Assignee: Univ. College Cardiff Consultants
    Inventors: David Drysdale Miller, Patrick Vivian Richard Shannon, Laddawan Chuncharprasert