Chemistry Letters, Vol.33, No.1, 10-11, 2004
Highly alpha-selective synthesis of disaccharide using glycosyl bromide by the promotion of phosphine oxide
A simple and practical method for the glycosylation of several acceptors with 2,3,4,6-tetra-0-benzyl-D-glucopyranosyl bromide was established by the promotion of phosphine oxide. The corresponding disaccharides were obtained in high yields with extremely high alpha-selectivities under almost neutral condition.