chair cyclohexanes. We report a highly stereocontrolled synthesis of a late‐stage intermediate, the “Corey dione”, from which DICA has been made previously. This formal synthesis features a rapid buildup of much of the complexity of the target through a sequence of enone tandem vicinal difunctionalization, Friedel–Crafts cyclodehydration, and sequential stereocontrolled reductions. Most importantly,
7,20-Diisocyanoadociane(DICA)是一种强效的抗疟
异氰酸酯,具有引人入胜的四环结构,该结构由稠合的椅子
环己烷组成。我们报道了后期中间体“ Corey dione”的高度立体控制合成,以前是从该中间体制得的。这种正式的合成过程通过一系列串联的双邻位双邻位双官能化,Friedel-Crafts环脱
水和顺序立体控制的还原反应,使目标的大部分复杂性迅速建立。最重要的是,这项成功建立了我们先前开发的异
氰基萜烯家族通用合成方法的广泛可行性,并为DICA及其相关
天然产物的直接合成提供了蓝图。