Abstract
2,3,4,6-Tetra-acetyl-glucose (1) reacted with trifluoroacetic anhydride to give good yield of 2,3,4, 6-tetra-O-acetyl-1-α-O-trifluoroacetyl-α-D-glucopyranose (2) which was converted into corresponding 1-O-acyl-β-D-glucopyranose tetraacetates. β-Anomers of glycosyl esters were obtained by this method.