A Facile Total Synthesis of Hainanensine via an Unusual Rearrangement−Annulation Cascade
作者:Zhi-Wei Zhang、Wei-Dong Z. Li
DOI:10.1021/ol1003324
日期:2010.4.16
A faciletotalsynthesis of hainanensine (1), a structurally unique Cephalotaxus alkaloid, via an effective acid-mediated rearrangement/Friedel−Crafts annulation cascade (7a/7b → 8a/8b), is described.
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 itsanalogues 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