Efficient Synthesis of (–)-Hanishin, (–)-Longamide B, and (–)-Longamide B Methyl Ester through Piperazinone Formation from 1,2-Cyclic Sulfamidates
作者:Koichi Fukase、Yukari Fujimoto、Zenyu Shiokawa、Shinsuke Inuki
DOI:10.1055/s-0035-1560988
日期:——
We describe a simple chiral-pool synthesis of (–)-longamide B, (–)-longamide B methyl ester, and (–)-hanishin. The key feature of the total synthesis is the formation of a piperazinone from a 1,2-cyclic sulfamidate and methyl 2-pyrrolecarboxylate, which permits efficient construction of the pyrrolopiperazinone core scaffold.
我们描述了 (-)-longamide B、(-)-longamide B 甲酯和 (-)-hanishin 的简单手性池合成。全合成的关键特征是由 1,2-环氨基磺酸盐和 2-吡咯羧酸甲酯形成哌嗪酮,这允许有效构建吡咯并哌嗪酮核心支架。