Total Synthesis of <i>N</i>-Malayamycin A and Related Bicyclic Purine and Pyrimidine Nucleosides
作者:Stephen Hanessian、Guobin Huang、Caroline Chenel、Roger Machaalani、Olivier Loiseleur
DOI:10.1021/jo050727b
日期:2005.8.1
synthesis of bicyclic perhydrofuropyran nucleosides as N-analogues of the naturally occurring malayamycin A. Formation of the N-nucleosides relied on the activation of thioglycosides, proceeding via sulfonium intermediates. Ring closure metathesis was used in two approaches to build the bicyclic dioxa heterocycle. Another approach relied on the use of a sugar precursor and cyclization to the bicyclic thioglycoside
方法双环perhydrofuropyran核苷的全合成被描述为Ñ -analogues所述的天然存在的malayamycin A.形成的Ñ核苷依靠硫代糖苷的激活,经由锍中间体进行。闭环复分解用于两种方法来构建双环二氧杂环杂环。另一种方法依赖于糖前体的使用和环化成双环硫代糖苷。