Synthesis of Thioglycosides by Tetrathiomolybdate-Mediated Michael Additions of Masked Thiolates
作者:Perali�Ramu Sridhar、Kandikere�Ramaiah Prabhu、Srinivasan Chandrasekaran
DOI:10.1002/ejoc.200400360
日期:2004.12
for the synthesis of thioglycosides in excellent yields under neutral conditions through the use of benzyltriethylammonium tetrathiomolybdate $[(BnNEt_3)}_2MoS_4; 1]$ as a sulfur-transfer reagent has been developed. The reagent 1 reacts with sugar halides to give sugar disulfides, which then undergo reductive cleavage in situ to provide the corresponding thiolates, followed by Michael addition to give
通过使用四硫代钼酸苄基三乙基铵 $[(BnNEt_3)}_2MoS_4; 在中性条件下以优异的收率合成硫糖苷的有效一锅法;1]$ 作为硫转移试剂已被开发出来。试剂 1 与糖卤化物反应生成糖二硫化物,然后进行原位还原裂解以提供相应的硫醇盐,然后通过迈克尔加成得到相应的硫代糖苷。此外,通过使用四硫代钼酸铵 $[(NH_4)}_2 MoS_4; 2]$。这种方法的应用已扩展到通过分子间和分子内反应合成具有优异非对映选择性的各种硫糖类似物。