The core fragment C7-C15 the (+)-migrastatin was constructed in a stereoconvergent manner utilizing desymmetrization approach. The strategy involved the generation of Z-configuration of trisubstituted double bond at C11-C12, epimerization at C10, ring opening of the pyran lactol with C2 Wittig ylide, and regioselective Sharpless dihydroxylation.
(+)-migrastatin 的核心片段 C7-C15 是利用去对称化方法以立体转换的方式构建的。该策略包括在 C11-C12 处生成 Z 构型的三取代双键、在 C10 处进行外延化、用 C2 Wittig ylide 打开
吡喃内酯的环,以及进行区域选择性 Sharpless 二羟基化。