A novel o-quinodimethane strategy for an active metabolite of vitamin D3. A total synthesis of 25-hydroxy Windaus-Grundmann ketone
作者:Hideo Nemoto、Masahiro Ando、Keiichiro Fukumoto
DOI:10.1016/s0040-4039(00)97025-4
日期:——
A highly diastereoselective total synthesis of 25-hydroxy Windaus-Grundmann ketone (2) was achieved via a novel regiocontrolled CC bond formation by an intramolecular epoxide ring opening reaction of the bissulfonyl epoxide (19) as a key step, which was derived stereoselectively by the thermolysis of olefinic benzocyclobutene (8) as a key step.
25-羟基温道斯-格伦德曼酮(的高度非对映全合成2)达到通过一种新颖的regiocontrolledCC键形成由双磺环氧化物(的分子内环氧化物开环反应19)作为关键步骤,这是立体选择性地衍生通过烯烃苯并环丁烯(8)的热解是关键步骤。