A ketal-tethered RCM strategy toward the synthesis of spiroketal related natural products
作者:Sunil K. Ghosh、Changhong Ko、Jia Liu、Jiashi Wang、Richard P. Hsung
DOI:10.1016/j.tet.2006.06.113
日期:2006.11
An unconventional approach to construct spiroketals and spiroaminals via ring-closing metathesis [RCM] of cyclic ketals and aminals, respectively, is described here. This method possesses a good generality with no loss of stereochemical integrity at the spirocenter under the standard RCM conditions. This approach has been applied to the synthesis of an insect pheromone to demonstrate its synthetic
本文介绍了一种非常规方法,分别通过环状缩酮和缩醛的环合易位[RCM]来构建螺环酮和螺缩醛。该方法具有良好的通用性,在标准RCM条件下,在螺中心的立体化学完整性没有损失。此方法已应用于昆虫信息素的合成以证明其合成潜力,也已应用于螺旋藻内酯A中的C11- Epi -C22-C23片段的合成。这都是概念验证应用,其特征在于具有缩酮将RCM束缚起来作为建造灵兵的替代策略。