Stereoselective Synthesis of 2,3-Unsaturated Pseudoglycosides Promoted by Ultrasound

Abstract

The ultrasound-promoted glycosidation of several alcohols using 3,4,6-triO -acetyl-D-glucal as the glycosyl donor is described. The products were obtained in a short reaction time at room temperature in good yield and α-selectivity in an open flask, thus avoiding the preparation and manipulation of unstable or sensitive catalysts.