Patent number: 6753316
Abstract: Compounds which are acryloyl substituted distamycin derivatives of formula (I) wherein: n is 2, 3 or 4; m is 1 or 2; X and Y are the same or different and are selected, independently for each heterocyclic ring of the polyetherocyclic chain, from N and CH; R1 and R2, which are the same or different, are selected from hydrogen, halogen, and C1-C4 alkyl; R3 is hydrogen or halogen; B is selected from (a), (b), (c), (d), (e), (f), (g) and —C≡N; wherein R4, R5, R6, R7, R8, R10, R11, and R12 are, independently from each other, hydrogen or C1-C4 alkyl; and R9 is hydrogen or hydroxy, or pharmaceutically acceptable salt thereof; provided that a) at least one of R4, R5 and R6 is alkyl b) at least one of the heterocyclic rings within the polyheterocyclic chain is other than pyrole; and c) X and Y are not both N for the same heterocyclic ring; are useful as antitumor agents.
Type:
Grant
Filed:
September 19, 2000
Date of Patent:
June 22, 2004
Assignee:
Pharmacia & Upjohn S.p.A.
Inventors:
Paolo Cozzi, Pier Giovanni Baraldi, Italo Beria, Marina Caldarelli, Laura Capolongo, Romeo Romagnoli