Chartelline C, a marine alkaloid, possesses a unique core scaffold including indolenine β-lactam and imidazole moieties linked by an unsaturated 10-membered ring. A new synthetic approach for the construction of the indolenine β-lactam was planned, based on the inherent reactivity of chartelline A with NaOMe, triggered by bromination of bromoenamide, and proceeding through an N-acyl imine. However
海
水生物碱Chartelline C具有独特的核心骨架,包括通过不饱和10元环连接的
吲哚烯β-内酰胺和
咪唑部分。基于沙特琳娜A与NaOMe的固有反应性(由
溴代烯酰胺的
溴化引发),并经过N-酰基
亚胺,计划了一种新的合成方法来构建
吲哚烯β-内酰胺。但是,未观察到N-酰基
亚胺中间体。取而代之的是,获得了相应的
溴代
吲哚胺,这导致所需的
吲哚烯β-内酰胺的产率为92%。