作者:Toyoharu Kobayashi、Kotono Yamanoue、Hideki Abe、Hisanaka Ito
DOI:10.1002/ejoc.201701219
日期:2017.12.8
The first total synthesis of tricyclic sesquiterpene (±)-toxicodenane A has been accomplished. This synthetic work was completed in 12 steps from dimedone utilizing diastereoselective reductive desymmetrization of 2,2-disubstituted 5,5-dimethylcyclohexane-1,3-dione, stereocontrolled allylation, ring-closing metathesis of diene compound yielding bicyclic compounds having a 7-membered ring, and construction
首次全合成三环倍半萜(±)-毒十二烷A已完成。该合成工作是通过二甲酮的 12 个步骤完成的,利用 2,2-二取代的 5,5-二甲基环己烷-1,3-二酮的非对映选择性还原去对称、立体控制的烯丙基化、二烯化合物的闭环复分解产生具有 7 元的双环化合物环,并通过相邻基团辅助环氧化物的开环反应构建氧桥接部分作为关键步骤。