作者:Tse-Lok Ho、Rong-Jie Chein
DOI:10.1002/hlca.200690025
日期:2006.2
An enantioselective synthesis of (+)-β-himachalene (2) was accomplished starting from (1S,2R)-1,2-epoxy-p-menth-8-ene (3) in 15 or 16 steps with an overall yield of ca. 6% (Schemes 3, 5, and 6). Key transformations include an Ireland–Claisen rearrangement, a Corey oxidative cyclization, and a ring expansion.
从(1 S,2 R)-1,2-环氧-p -menth-8-烯(3)开始以15或16步完成对(+)- β-喜马林烯(2)的对映选择性合成产率的约 6%(方案3、5和6)。关键的转变包括爱尔兰-克莱森重排,科里氧化环化和环扩展。