A General, Convergent Strategy for the Construction of Indolizidine Alkaloids: Total Syntheses of (−)-Indolizidine 223AB and Alkaloid (−)-205B
作者:Amos B. Smith、Dae-Shik Kim
DOI:10.1021/jo052314g
日期:2006.3.31
alcohols. This tactic, in conjunction with a one-flask sequential cyclization, constitutes an effective general strategy for the construction of indolizidine and related alkaloids, illustrated here with the total syntheses of (−)-indolizidine 223AB (1) and alkaloid (−)-205B (2).
N-甲苯磺酰基氮丙啶在甲硅烷基二噻吩的溶剂控制的三组分链环连接中包含有效的第二亲电试剂,用于立体控制的会聚精制被保护的1,5-氨基醇。此策略与一个烧瓶的连续环化反应一起构成了构建吲哚利西定和相关生物碱的有效一般策略,在此举例说明了(-)-吲哚利西定223AB(1)和生物碱(-)-205B的总合成(2)。