The preparation and study of some novel glycosides of D-galactose

The tert-butyl- and the 2,2,2-trichloroethyl α- and β-D-galactopyranosides were prepared and both α-D-glycosides were selectively benzoylated to give the 2,3,6-tri-O-benzoyl-D-galactopyranosides. Cleaving of the glycosidic groups is described. The glycosides are useful intermediates for oligosaccharide synthesis where generation of a reducing sugar terminus under mild conditions is necessary.