Synthesis of Optically Active Bicyclo(3.3.0)octane Skeleton Using Transannular Reaction.
作者:Tamaki HORIKAWA、Yoshihiko NORIMINE、Masakazu TANAKA、Kiyoshi SAKAI、Hiroshi SUEMUNE
DOI:10.1248/cpb.46.17
日期:——
Optically active 5-cyclooctene-1, 2-diol derivatives prepared by an enzymatic procedure have been converted into bicyclo[3.3.0]octane derivatives by transannular reaction with complete inversion of the stereogenic center linked to the leaving group. Formal synthesis of (+)-iridomyrmecin has been achieved starting from (S, S)-5-cyclooctene-1, 2-diol by using this process.
用酶法工艺制备的具有光学活性的 5-环辛烯-1, 2-二醇衍生物,通过反硝化反应转化为双环[3.3.0]辛烷衍生物,与离去基团相连的立体中心完全反转。利用这一过程,从 (S,S)-5-环辛烯-1,2-二醇开始,实现了 (+)-iridomyrmecin 的正式合成。