Synthesis of the spiroacetal core of the cephalosporolide family of natural products
作者:Orla C. Finch、Daniel P. Furkert、Margaret A. Brimble
DOI:10.1016/j.tet.2013.12.012
日期:2014.1
The synthesis of four possible stereoisomers of the spiroacetal core of the natural products cephalosporolides H and I and penisporolides A and B is described. The key steps involve the use of Sharpless asymmetric dihydroxylation to install the desired stereochemistry of the γ-lactone ring and an oxidative radical cyclisation to form the spiroacetal ring system.
描述了天然产物头孢菌内酯H和I和戊菌内酯A和B的螺缩醛核心的四种可能的立体异构体的合成。关键步骤包括使用Sharpless不对称二羟基化反应以安装所需的γ-内酯环立体化学和氧化自由基环化反应以形成螺缩醛环系统。