Diversity Oriented Convergent Access for Collective Total Synthesis of Bioactive Multifunctional Carbazole Alkaloids: Synthesis of Carbazomycin A, Carbazomycin B, Hyellazole, Chlorohyellazole, and Clausenaline D
作者:Shivaji B. Markad、Narshinha P. Argade
DOI:10.1021/ol502721r
日期:2014.10.17
Facile syntheses of imperative carbazole alkaloids carbazomycin A, carbazomycin B, hyellazole, chlorohyellazole, and clausenaline D have been demonstrated starting from readily available Boc-protected 3-formylindole and dimethyl maleate. The suitably substituted aromatic rings have been designed comprising three/four significant C–C bond forming reactions. The competent Wittig reaction, selective monoalkylations
从易于获得的Boc保护的3-甲酰基吲哚和马来酸二甲酯开始,已经证明了强制性咔唑生物碱咔唑霉素A,咔唑霉素B,hy唑,氯hy唑和章鱼碱D的简便合成。适当取代的芳环已设计成包含三个/四个重要的C–C键形成反应。主要的特征是有效的Wittig反应,选择性单烷基化,一锅区域选择性Weinreb酰胺形成和Boc脱保护,精心设计的Grignard反应,脱水分子内环化和芳族醛的Baeyer-Villiger重排。