Synthesis and in vitro cytotoxic evaluation of some thiazolylbenzimidazole derivatives.

A novel kind of thiazolylbenzimidazole derivatives were designed and synthesized and evaluated for their antitumor activity against SMMC-7721 and A549 cell lines. Most compounds showed good antitumor activities, and compound 11b displayed remarkable in vitro anticancer activity comparable to taxol. The preliminary structure-activity relationship of these benzimidazole derivatives was discussed based on the experimental data obtained.