A facile synthesis of per-O-alkylated glycono-δ-lactones from per-O-alkylated glycopyranosides and a novel ring contraction for pyranoses
作者:Matthias Goebel、Heinz-Georg Nothofer、Günther Roß、Ivar Ugi
DOI:10.1016/s0040-4020(97)00068-9
日期:1997.3
A novel one-pot synthesis of a variety of O-peralkylated δ-aldonolactones 9 from their corresponding glycosides 1 is introduced. This facile procedure involves combining glycoside precursor, tin(IV) chloride and trimethylsilyl azide in methylene chloride at room temperature to furnish the title compounds in moderate to high yields. A side reaction involving extrusion of C-1 of the common carbohydrate
从它们相应的糖苷1引入了一种新颖的一锅合成的各种O-过烷基化δ-醛内酯9。该简便的方法包括在室温下将糖苷前体,氯化锡(IV)和叠氮化三甲基甲硅烷基合并在二氯甲烷中,以中等至高收率提供标题化合物。涉及挤出常见碳水化合物中间体的C-1的副反应分别导致d-阿拉伯糖基呋喃糖苷和d-lyx呋喃糖苷衍生物10a和10b。