Divergent total synthesis of (−)-aspidophytine and its congeners via Fischer indole synthesis
作者:Hitoshi Satoh、Hirofumi Ueda、Hidetoshi Tokuyama
DOI:10.1016/j.tet.2012.10.060
日期:2013.1
A total synthesis of (−)-aspidophytine and the first total syntheses of its congeners, (+)-cimicidine and (+)-cimicine, were accomplished in a divergent manner. Construction of the aspidosperma skeleton was executed by Fischer indole synthesis between substituted phenylhydrazines and tricyclic aminoketone. The regiochemistry of the Fischer indole synthesis was strongly dependent on the choice of acid
(-)-aspophytine的总合成及其同类物(+)-cimicidine和(+)-cimicine的第一个总合成以不同的方式完成。通过在取代的苯肼和三环氨基酮之间的费歇尔吲哚合成法来完成天冬子精子骨架的构建。Fischer吲哚合成的区域化学反应在很大程度上取决于酸的选择,而弱酸(例如乙酸)以高选择性提供了所需的吲哚烯异构体。