Synthetic studies towards furosesquiterpenoids: total synthesis of (±) desmethylpallescensin-A, (±) isopallescensin-A and (±) isopallescensin-1
作者:Sajal Kanti Mal、Gandhi K Kar、Jayanta K Ray
DOI:10.1016/j.tet.2004.01.068
日期:2004.3
A new approach for a short and efficient synthesis of common cyclohexenone intermediate towards the total synthesis of some furosesquiterpenes and their analogues are described. Regioselective alkylation of Hagemann's ester with 2/3-furyl-2-ethyl bromide followed by hydrolysis cum in situ decarboxylation and 1,4-addition with Gilman's reagent produced the cyclohexanone derivatives which have been utilized
描述了一种短而有效的合成普通环己烯酮中间体的方法,该方法可以快速合成某些呋喃倍半萜及其类似物。用2 / 3-呋喃基-2-乙基溴对哈格曼酯进行区域选择性烷基化,然后水解并就地脱羧,再用吉尔曼试剂进行1,4-加成,生成环己酮衍生物,该衍生物已用于(±)异pallescensin-A的全合成,(±)10-去甲基pallescensin-A,(±)5-desmethyl-4,5-dehydromicrocionin-1和(±)isopallescens-1。