作者:Atsushi Endo、Samuel J. Danishefsky
DOI:10.1021/ja0522783
日期:2005.6.1
Total synthesis of potent proteasome inhibitor salinosporamide A (1) has been accomplished, which features strictly substrate-controlled operations starting with the only chiral center of (R)-pyroglutamic acid. The consecutive quaternary carbons within 1 have been efficiently constructed by manipulation of two intramolecular reactions: (1) carbonate-mediated internal acylation of imidate ester (4 -->
已完成强效蛋白酶体抑制剂盐孢菌酰胺 A (1) 的全合成,其特点是严格底物控制操作,从 (R)-焦谷氨酸的唯一手性中心开始。通过操纵两个分子内反应有效地构建了 1 中的连续季碳:(1)碳酸酯介导的亚胺酸酯(4 - > 14)和(2)醛的硒环化成环外亚甲基(5 - > 18)。