Enantioselective synthesis of aurisides A and B, cytotoxic macrolide glycosides of marine origin
作者:Kiyotake Suenaga、Hiroshi Hoshino、Takanori Yoshii、Kazunori Mori、Hiroki Sone、Yuhki Bessho、Akira Sakakura、Ichiro Hayakawa、Kiyoyuki Yamada、Hideo Kigoshi
DOI:10.1016/j.tet.2006.05.077
日期:2006.8
The enantioselective synthesis of aurisides A and B, macrolide glycosides of marine origin, was achieved by a convergent approach. The C1–C9 segment 4 was prepared from (R)-pantolactone, and the C10–C17 segment 14 was synthesized from (R)-glycidyl trityl ether. The Nozaki–Hiyama–Kishi reaction between 4 and 14 and subsequent reactions gave seco acid 10, which was converted into the aglycon (3) of aurisides
通过收敛的方法实现了Aurisides A和B(海洋来源的大环内酯糖苷)的对映选择性合成。C1-C9段4由(R)-泛内酯制备,C10-C17段14由(R)-缩水甘油基三苯甲基醚合成。4至14之间的Nozaki–Hiyama–Kishi反应及随后的反应产生了癸二酸10,其通过构建14元内酯和溴取代的共轭二烯而转化为耳苷的糖苷(3)。糖苷配基的糖基化反应提供了苷A和B.