Anomeric 6-O-tosyl-1, 3, 4-tri-O-acetyl-N-acetyl-D-glucosamines and 6-deoxy-6-iodocompounds were prepared from N-benzylidene-D-glucosamine. By alkali treatment of the β-anomer of the 6-tosylate, 1, 6-anhydro-N-acetyl-β-D-glucosamine was synthesized, but no anhydride of the α-anomer was obtained.
