this strategy, together with additional key steps such as long-range directed hydrogenation and diastereoselective intramolecular iodo-amination, led to highly convergent total syntheses of (-)-batzelladine D and (+)-batzelladine A with excellent stereocontrol.
已经开发出
乙烯基碳二
亚胺与手性 N-烷基
亚胺的非对映选择性 [4 + 2]-环化,以获取 batzelladine
生物碱的立体
化学丰富的多环
胍核。该策略的应用,连同其他关键步骤,如远程定向氢化和非对映选择性分子内
碘胺化,导致 (-)-batzelladine D 和 (+)-batzelladine A 的高度收敛全合成具有出色的立体控制。