Carbanion cyclisation of esters. Part 2: 1See Reference 1. 1 Enantiospecific construction of the tricyclic framework of the marine sesquiterpenes, spirodysins
作者:A. Srikrishna、P. Ravi Kumar、S.S.V. Ramasastry
DOI:10.1016/j.tetlet.2003.10.165
日期:2004.1
Enantiospecific construction of the bicyclo[4.3.0]nonan-8-one 17 employing a lithium and liquid ammonia mediated carbanion cyclisation of the δ-methyl-δ,ε-unsaturated ester 13, and its elaboration to the tricyclic framework of the marine sesquiterpenes spirodysins are described.
双环[4.3.0] nonan-8-one 17的对映异构体构建,采用锂和液氨介导的δ-甲基-δ,ε-不饱和酯13的碳环环化反应,并将其精细化为海洋倍半萜的三环骨架描述了螺旋素。