Potential antitumor agents. 59. Structure-activity relationships for 2-phenylbenzimidazole-4-carboxamides, a new class of minimal DNA-intercalating agents which may not act via topoisomerase II
作者:William A. Denny、Gordon W. Rewcastle、Bruce C. Baguley
DOI:10.1021/jm00164a054
日期:1990.2
Despite very low in vitro cytotoxicities, several of the compounds had moderate levels of in vivo antileukemiceffects. However, the most interesting aspect of their biological activity was the lack of cross-resistance shown to an amsacrine-resistant P388 cell line, suggesting that these compounds may not express their cytotoxicity via interaction with topoisomerase II.
Enantioselective Syntheses of Tricyclic Benzimidazoles via Intramolecular Allylic Aminations with Chiral-Bridged Biphenyl Phosphoramidite Ligands
作者:Xiaoding Jiang、Xiangmeng Chen、Yongsu Li、Hao Liang、Yaqi Zhang、Xiaobo He、Bin Chen、Wesley Ting Kwok Chan、Albert S. C. Chan、Liqin Qiu
DOI:10.1021/acs.orglett.8b03640
日期:2019.2.1
The first iridium-catalyzed enantioselective intramolecular allylic aminations of benzimidazole-tethered allylic carbonates were developed, providing three classes of tricyclic benzimidazoles bearing a tertiary carbon stereogenic center in high yields and excellent enantioselectivities (up to 99% yield, 99% ee). Wide substrate scope, excellent catalytic efficiency and mild conditions rendered this