Concise total syntheses of berberine and its analogues enabled by trifluoroacetic anhydride-promoted decarbonylative-elimination reaction
作者:Xifei Yan、Jianfeng Zheng、Wei-Dong Z. Li
DOI:10.1016/j.tetlet.2023.154826
日期:2023.11
The total syntheses of berberine hydrochloride and its analogues were achieved by a convergent strategy from available meconine derivatives, which were based on base mediated isoquinoline annulation followed by trifluoroacetic anhydride promoted decarbonylative elimination protocol. Key elements of our approach feature divergent synthesis, step-economy manner, multigram scalable synthesis, transition
盐酸小檗碱及其类似物的全合成是通过现有的meconine衍生物的收敛策略实现的,该策略基于碱介导的异喹啉环化,然后是三氟乙酸酐促进的脱羰消除方案。我们方法的关键要素包括发散合成、分步经济方式、多克规模合成、无过渡金属和无色谱纯化。