A General Approach to the Quinolizidine
Alkaloids via an Intramolecular Aza-[3+3] Annulation:
Synthesis of (±)-2-Deoxylasubine II
作者:Richard Hsung、Yu Zhang、Aleksey Gerasyuto、Quincy Long
DOI:10.1055/s-0028-1087661
日期:——
The first success in constructing a member of quinolizidine family of alkaloids employing an intramolecular aza-[3 + 3] annulation strategy is described here. The key feature is the usage of vinylogous urethane tethered to a vinyl iminium intermediate with trifluoroacetate serving as the counter anion. The proof-of-concept is illustrated with the synthesis of 2-deoxy-lasubine II.
这里描述了使用分子内氮杂-[3 + 3] 环化策略构建喹尼西啶家族生物碱成员的首次成功。关键特征是使用连接到乙烯基亚胺中间体的乙烯基氨基甲酸酯,三氟乙酸盐作为抗衡阴离子。概念验证通过 2-脱氧-拉苏宾 II 的合成进行说明。