Development of a Strategy for the Total Synthesis of <i>Aspidosperma</i> Alkaloids via the Cyclobutenone-Based PET-Initiated Cationic Radical-Driven [2+2]/Retro-Mannich Reaction
作者:Jianyu Long、Rudong Liu、Xinpeng Mu、Zhilin Song、Zhongchao Zhang、Zhen Yang
DOI:10.1021/acs.orglett.4c00540
日期:2024.4.19
A novel strategy for the synthesis of Aspidosperma alkaloids has been achieved via a photoredox-initiated [2+2]/retro-Mannich reaction of tryptamine-substituted enaminones as a key step. The developed chemistry has been applied to the construction of the core tetracycle of Aspidosperma alkaloids (±)-aspidospermidine and (±)-limaspermidine.
通过色胺取代的烯胺酮的光氧化还原引发的[2+2]/逆曼尼希反应作为关键步骤,实现了一种合成Aspidosperma生物碱的新策略。所开发的化学方法已应用于Aspidosperma生物碱 (±)-aspidospermidine 和 (±)-limaspermidine 核心四环的构建。