Bioinspired Total Synthesis of the Dimeric Indole Alkaloid (+)-Haplophytine by Direct Coupling and Late-Stage Oxidative Rearrangement
作者:Hitoshi Satoh、Ken-ichi Ojima、Hirofumi Ueda、Hidetoshi Tokuyama
DOI:10.1002/anie.201609285
日期:2016.11.21
convergent total synthesis of (+)‐haplophytine, a dimeric indole alkaloid with diazabicyclo[3.3.1]nonane and hexacyclic aspidosperma segments, is described. This synthesis involves the direct coupling of the two segments in a AgNTf2‐mediated Friedel–Crafts reaction and construction of the diazabicyclo[3.3.1]nonane skeleton through late‐stage chemoselective aerobic oxidation of the 1,2‐diaminoethene moiety
描述了(+)-单倍体,具有二氮杂双环[3.3.1]壬烷和六环曲霉精子链段的二聚吲哚生物碱的生物启发性聚合全合成。该合成涉及在AgNTf 2介导的Friedel-Crafts反应中两个部分的直接偶联,以及通过1,2-二氨基乙烯部分的后期化学选择性好氧氧化和顺序的二氮杂双环[3.3.1]壬烷骨架的构建。半品红酚型重排。