Total synthesis of chromomoric acid B and F methyl esters
作者:Xin-Jie Chu、Hong Dong、Zhi-Yu Liu
DOI:10.1016/0040-4020(94)00941-m
日期:1995.1
A convenient totalsynthesis of chromomoric acid B methylester 1 and the first synthesis of chromomoric acid Fmethylester 2 have been described. A one-pot Michael addition-enolate trapping sequence afforded ketone 5 which after a few steps was converted to 1. Retro Diels-Alder reaction of ester 7 afforded enone 9 which was then transformed to the target molecule 2 through hydrogenation and α-hydroxylation
Three cadinene derivatives and a prostaglandin-like acid from Chromolaena species
作者:Ferdinand Bohlmann、Pahup Singh、Jasmin Jakupovic、Robert M. King、Harold Robinson
DOI:10.1016/s0031-9422(00)95269-5
日期:1982.1
An investigation of the aerial parts of Chromolaena chasleae afforded a prostaglandin-likeacid, whose structure followed from the 1H NMR spectral data and from the reaction with periodate, which afforded a hemiacetal. From a new Chromolaena species, three novel cadinene derivatives were isolated, which were closely related to those isolated previously from this genus.