Synthesis of heliannane skeletons. Facile preparation of (±)-heliannuol D
作者:Francisco A Macı́as、David Chinchilla、José M.G Molinillo、David Marı́n、Rosa M Varela、Ascensión Torres
DOI:10.1016/s0040-4020(03)00134-0
日期:2003.3
Heliannuol D is a natural product with a 7,10-heliannane skeleton, isolated from Helianthus annuus. It has been synthesized in eight steps, in good yield, using a new biomimetic method. Key steps were a Fries rearrangement, a Grignard reaction and, finally, a base catalyzed cyclization.
Heliannuol D是一种天然产物,具有7,10-heliannane骨架,从向日葵(Helianthus annuus)中分离出来。使用一种新的仿生方法,已通过八个步骤以高收率合成了它。关键步骤是Fries重排,Grignard反应,最后是碱催化的环化反应。