pro-nucleophile leading to the hydroxymethyl substituted bicyclic framework of various bicyclic alkaloids is presented. Following this protocol, total synthesis of (±)-epilupinine and formal syntheses of (±)-laburnine, (±)-isoretronecanol and (±)-tashiromine are described.
提出了一种直接的Mannich型非对映选择性仿生环化反应,该反应使用
乙缩醛作为亲核亲核试剂,导致各种双环
生物碱的羟甲基取代的双环骨架。根据该协议,描述了(±)-艾比丁宁的全合成和(±)-松花碱,(±)-
异戊烯醇和(±)-tashiromine的形式合成。