achieved. The 14-membered macrocyclic backbone was constructed in a convergent manner via esterification and ring-closing metathesis. The bromodiene side chain was introduced by means of a Stille-type reaction and a subsequent bromodesilylation. Finally, the rhamnopyranose unit was stereoselectively introduced by glycosylation under Schmidt conditions.
已经实现了13-去甲基lyngbyaloside B的全合成,这是海洋大环内酯糖苷lyngbyaloside B的非天然类似物。通过酯化和闭环复分解以聚合方式构建14元大环骨架。通过Stille型反应和随后的
溴代甲
硅烷基化引入
溴代二烯侧链。最后,在Schmidt条件下通过糖基化立体选择性地引入
鼠李糖吡喃糖单元。