Broad spectrum alkynyl inhibitors of T315I Bcr-Abl

A series of alkyne-containing type II inhibitors with potent inhibitory activity of T315I Bcr-Abl has been identified. The most active compound 4 exhibits an EC50 of less than 1 nM against wild-type Bcr-Abl and an EC50 of 10 nM against T315I mutant but is broadly active against a number of other kinases.