A straightforward strategy for constructing seven-membered carbocycles by employing a Lewis acid catalyzed intramolecular Michael addition of allenones is reported. It offers atom-economic access to synthetically important furan-fused bi- or tricyclic frameworks containing seven-membered carbocycles, which are widely found in natural products possessing various bioactivities. A number of seven-membered
报道了一种通过采用
路易斯酸催化联烯酮分子内迈克尔加成来构建七元碳环的简单策略。它提供了合成重要的含有七元碳环的
呋喃稠合双环或
三环骨架的原子经济途径,这些骨架广泛存在于具有各种
生物活性的
天然产物中。许多带有不同官能团的七元碳环多环骨架以良好到优异的产率制备。此外,Caribenol A 和 Frondosin B 关键骨架的构建也证明了该策略的应用潜力。