Enantioselective Synthesis of 15-<i>e</i><i>pi</i>-Haterumalide NA Methyl Ester and Revised Structure of Haterumalide NA
作者:Hideo Kigoshi、Masaki Kita、Seiji Ogawa、Masahiro Itoh、Daisuke Uemura
DOI:10.1021/ol0341804
日期:2003.3.1
[structure: see text] The enantioselective synthesis of the enantiomer of the haterumalide NA methyl ester, a cytotoxic macrolide from an Okinawan sponge, was achieved from the threitol derivative in 26 steps. The key steps are the stereoselective construction of a chloroolefin unit and the intramolecular Reformatsky-type reaction. This synthesis revised the absolute stereochemistry of haterumalide
[结构:见正文]由苏糖醇衍生物经26个步骤完成了对角膜内酯NA甲酯(一种来自冲绳海绵的细胞毒性大环内酯)的对映异构体的对映选择性合成。关键步骤是氯烯烃单元的立体选择性构建和分子内Reformatsky型反应。该合成方法修改了帽芝内酯NA的绝对立体化学。