作者:Sudhakar Athe、Balla Chandrasekhar、Saumya Roy、Tapan Kumar Pradhan、Subhash Ghosh
DOI:10.1021/jo301425c
日期:2012.11.2
This paper describes the formal total synthesis of (+)-neopeltolide, a cytotoxic macrolide isolated from the marine sponge Neopeltidae. The key features of the synthesis include an asymmetric Evans alkylation to fix the C9-methyl center, Jacobsen hydrolytic kinetic resolution of terminal epoxides followed by their regioselective opening to fix the stereocenters at the C11 and C13 positions, respectively
本文描述了(+)-neopeltolide的正式全合成,neopeltolide是一种从海洋海绵Neopeltidae中分离出来的细胞毒性大环内酯。合成的关键特征包括固定C9-甲基中心的不对称伊文思烷基化,末端环氧化物的Jacobsen水解动力学拆分,以及随后的区域选择性开放,分别将Pd催化的oxa-固定在C11和C13位置的立体中心。迈克尔反应以构建四氢吡喃环,并进行山口大内酯化以形成分子的大环核心。