Highly enantioselective synthesis of biologically important 2,5-dihydropyrroles via phosphoric acid-catalyzed three-component reactions and evaluation of their cytotoxicity
作者:Feng Shi、Zhong-Lin Tao、Jie Yu、Shu-Jiang Tu
DOI:10.1016/j.tetasy.2011.11.020
日期:2011.12
A series of new chiral 2,5-dihydropyrrole derivatives were synthesized with high enantioselectivity via phosphoric acid-catalyzed three-component reactions of aldehydes, amino-esters, and alkyl ynones. This approach has the prominent features of high enantioselectivity (up to 98% ee), atom economy, a broad scope of substrate tolerance as well as operational simplicity, leading to a facile and straightforward access to biologically important chiral 2,5-dihydropyrroles. Moreover, the preliminary evaluation on the cytotoxic activity of this type of chiral 2,5-dihydropyrrole derivatives has resulted in the finding of several compounds with effective cytotoxicity to the carcinoma cell line MCF7. (C) 2011 Elsevier Ltd. All rights reserved.