Synthesis of the gymnodimine tetrahydrofuran core through a Ueno–Stork radical cyclization
作者:Sylvestre Toumieux、Redouane Beniazza、Valérie Desvergnes、Rómulo Aráoz、Jordi Molgó、Yannick Landais
DOI:10.1039/c1ob05240c
日期:——
A straightforward access to the C10âC20 skeleton of gymnodimine, incorporating a tetrahydrofuran fragment, is described. The elaboration of the THF moiety is based on a stereocontrolled UenoâStork cyclization. A Lewis-acid mediated allylation of the resulting acetal at C13 and a HornerâWadsworthâEmmons olefination on the ketone at C17 complete the synthesis.
本文描述了一种直接获取含有四氢呋喃片段的gymnodimine的C10-C20骨架的方法。THF部分的构造基于立体控制的Ueno–Stork环化。在C13位置对得到的缩醛进行路易斯酸介导的烯丙基化,以及在C17位置对酮进行Horner–Wadsworth–Emmons烯化,完成了合成。