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