A de Novo Synthesis of 2,6-Dideoxy-<i>C</i>-aryl Glycosides Based on Ring Closing Metathesis and Diastereoselective Epoxide Cleavage/Anomerization Reactions
作者:Bernd Schmidt
DOI:10.1021/ol005522y
日期:2000.3.1
This paper describes a synthesis of enantiomerically pure 2,6-dideoxy-C-aryl glycosides, starting from non-carbohydrate precursors. The synthesis starts from homoallylic alcohols (obtained in enantiomerically pure form by enzymatic resolution), which are elaborated to dihydropyrans using ring closing metathesis as the key step. Epoxidation and epoxide cleavage complete the synthesis. The stereochemical
本文描述了从非碳水化合物前体开始的对映体纯的2,6-二脱氧-C-芳基糖苷的合成。合成从均烯丙基醇(通过酶促拆分以对映体纯形式获得)开始,其以闭环复分解为关键步骤加工为二氢吡喃。环氧化和环氧化物裂解完成了合成。序列的立体化学结果取决于环氧化物裂解反应的条件。