The invention provides compounds of formula (I):
wherein E, A, B′, R
6
, R
7
, R
8
, and R
9
are defined in the specification which compounds exhibit anticancer activity and are useful for treating cancer.
Modifications of the D-piece carboxylic acid group of the hemiasterlin analog HTI-286 gave tubulin inhibitors which were potent cytotoxic agents in taxol resistant cell lines expressing P-glycoprotein. Amides derived from proline had potency comparable to HTI-286. Reduction of the carboxylic acid to ketones and alcohols or its conversion to acidic heterocycles also gave potent analogs. Synthetic modifications of the carboxylic acid could be carried out selectively using a wide range of synthetic reagents. Proline analog 3 was found to be effective in a human xenograft model in athymic mice. (C) 2004 Elsevier Ltd. All rights reserved.
US7390910B2
申请人:——
公开号:US7390910B2
公开(公告)日:2008-06-24
US7626023B2
申请人:——
公开号:US7626023B2
公开(公告)日:2009-12-01
Compounds for treating tumors
申请人:Zask Arie
公开号:US20050037977A1
公开(公告)日:2005-02-17
The invention provides compounds of formula (I):
wherein E, A, B′, R
6
, R
7
, R
8
, and R
9
are defined in the specification which compounds exhibit anticancer activity and are useful for treating cancer.