of α-d-1,2-anhydrohexapyranoses with phenols proceeded smoothly in ethyl acetate (neutral conditions) in the absence of metal ion catalysts or additives to stereoselectively furnish 1,2-cis-α-aryl glycosides as the major product and 1,2-trans-β-aryl glycosides as the minor product in good yields. Under similar conditions, this ring opening reaction with alcohols afforded exclusively β-alkyl glycosides
的开环α - d -1,2- anhydrohexapyranoses与
酚在没有
金属离子的催化剂或添加剂在
乙酸乙酯(中性条件)顺利进行立体选择性配料1,2-顺式- α -芳基糖苷作为主要产物和1,2-反式- β -芳基苷作为良好收益次要产物。在相似的条件下,这种与醇的开环反应以优异的产率仅提供β-烷基糖苷。