Total Synthesis of the Polyene-Polyol Macrolide RK-397, Featuring Cross-Couplings of Alkynylepoxide Modules
作者:Svetlana A. Burova、Frank E. McDonald
DOI:10.1021/ja039618+
日期:2004.3.3
from alkyne-epoxide couplings are converted into 1,3-diols by a sequence of hydroxyl-directed hydrosilylation, C-Si bond oxidation, and stereoselective ketone reduction with induction from the beta-hydroxyl group. The highly convergent nature of our synthetic pathway and the flexibility of the modular synthesis strategy for virtually any stereoisomer can provide access to other members of the polyene-polyol
天然产物 RK-397 的全合成基于组装聚乙酸酯结构的新合成策略,通过亲核末端炔烃模块与在相反末端带有另一个炔烃的亲电环氧化物的有效交叉偶联。天然产物由四个主要模块构成:碳 3-9 的多烯前体和碳 10-16、17-22 和 23-33 的三个炔烃封端模块。每个模块都是在控制所有立体化学元素的情况下制备的,从炔烃-环氧化物偶联获得的炔醇通过一系列羟基导向的氢化硅烷化、C-Si 键氧化和立体选择性酮还原反应转化为 1,3-二醇来自β-羟基。