Unified Total Synthesis of Five Gelsedine-Type Alkaloids: (−)-Gelsenicine, (−)-Gelsedine, (−)-Gelsedilam, (−)-14-Hydroxygelsenicine, and (−)-14,15-Dihydroxygelsenicine
作者:Takaaki Harada、Jun Shimokawa、Tohru Fukuyama
DOI:10.1021/acs.orglett.6b02263
日期:2016.9.16
The systematic arrangement of a two-carbon unit, hydrogen atom, and oxygen atom on the versatile enal moiety of a non-natural synthetic intermediate successfully led to the unified access to the gelsedine-type alkaloids. The development and use of this new synthetic hub and an array of site-selective transformations resulted in the asymmetric synthesis of (−)-gelsenicine, (−)-gelsedine, (−)-gelsedilam
在非天然合成中间体的通用烯丙基部分上的两个碳原子单元,一个氢原子和一个氧原子的系统排列成功地导致了对凝胶状生物碱的统一访问。这种新的合成中枢的开发和使用以及一系列位点选择性转化导致(-)-gelsenicine,(-)-gelsedine,(-)-gelsedilam,(-)-14-hydroxygelsenicine和(-)-14,15-二羟基gelsenicine。