Patent number: 6514972
Abstract: A compound of the formula
wherein, independently at each occurrence, v, w, and x are selected from C, N, O, and S, with H substitution as needed to fulfill open valence sites; y and z are selected from N and C, with H substitution as needed to fulfill open valence sites, with the proviso that each of w, v, x, y and z is not simultaneously C; the ring formed from v, w, x, y and z may be saturated or unsaturated; and R1, R2, R3 and R4 are selected from hydrogen, alkyl, aryl, alkaryl, aralkyl, heteroalkyl, and heteroaryl; wherein any adjacent two of R1, R2, R3 and R4 may join together to form a 5, 6 or 7-membered carbocyclic or heterocyclic ring, with the proviso that each of R1, R2, R3 and R4 is not simultaneously hydrogen. Pharmaceutical compositions of said compounds, and methods of use in the treatment of biological conditions including cellular hyperproliferation, are disclosed.
Type:
Grant
Filed:
July 6, 2001
Date of Patent:
February 4, 2003
Assignee:
Kinetek Pharmaceuticals, Inc.
Inventors:
Zaihui Zhang, Xinyao Du, Serguei Sviridov, Greg Chopiuk