Synthetic approach towards cuparene-type sesquiterpenes via highly regioselective epoxide opening under acid catalysis
作者:Camila B. Nascimento、Leandro A. Avelar、Danilo C. Arantes、Noêmia K. Ishikawa、Fernando Macedo
DOI:10.1007/s00706-018-2199-6
日期:2018.10
AbstractObtaining cuparene-type sesquiterpenes is a significant synthetic challenge mainly because of the construction of the sterically hindered quaternary centres. We report herein the successful construction of such quaternary moiety by a highly regioselective opening of (+/−)-2,5-dimethoxy-4-methyl-α-methylstyrene oxide by the acetone silyl enol ether catalysed by Lewis acid. Additionally, an efficient