phenyl 2-azido-2-deoxy-3-O-benzoyl-6-O-t-butyldiphenylsilyl-4-O-t-butyloxycarbonyl-1-thio-β-D-galactopyranoside

phenyl 3-O-acetyl-2-azido-2-deoxy-6-O-tert-butyldiphenylsilyl-1-thio-β-D-glucopyranoside