Enantioselective Synthesis of Cryptopleurine and Boehmeriasin A via Organocatalytic Intramolecular Aza-Michael Addition
作者:Shouyun Yu、Chuanqi Zeng、Hanbin Liu、Mengyao Zhang、Jiajia Guo、Shunchao Jiang
DOI:10.1055/s-0031-1290457
日期:——
The enantioselective synthesis of phenanthroquinolizidine alkaloids cryptopleurine and boehmeriasin A was achieved in eight steps from commercial available Cbz-protected 2-piperidinone in 22% and 20% overall yield, respectively. The key steps of this route are intramolecular enantioselective aza-Michael addition, intramolecular aldol addition, and oxidative coupling.
从市售的 Cbz 保护的 2-哌啶酮中分 8 个步骤实现菲喹唑啉生物碱隐胸苷和勃姆虫素 A 的对映选择性合成,总产率分别为 22% 和 20%。该路线的关键步骤是分子内对映选择性氮杂-迈克尔加成、分子内醛醇加成和氧化偶联。