Synthesis of (5<i>S</i>)-TricyclicPenems as Novel and Potent Inhibitors of Bacterial Signal Peptidases
作者:X. Hu、Nick Kim、Leo Grinius、Charles Morris、Cynthia Wallace、Glen Mieling、Thomas Demuth
DOI:10.1055/s-2003-40882
日期:2003.8
(5S)-Tricyclic penems were synthesized for the first time via intramolecular cyclization of penem epoxy amides catalyzed by a weak Lewis acid [Mg(ClO4)2]. Due to the high degree of ring strain in these molecules, mild reaction conditions were developed to successfully construct penem intermediates and the tricyclic penem final products. These tricyclic penems and other newly synthesized (5S)-penem esters and amides exhibited good-to-high potency when tested as inhibitors of bacterial signal peptidases.
在弱路易斯酸[Mg(ClO4)2]的催化下,首次通过五价烯环氧酰胺的分子内环化合成了(5S)-三环五价烯。由于这些分子的环应变程度较高,因此开发出了温和的反应条件,成功地构建了五价烯中间体和三环五价烯最终产物。这些三环青霉烯和其他新合成的 (5S)- 青霉烯酯和酰胺在作为细菌信号肽酶抑制剂进行测试时,表现出良好至较高的效力。