methyl 4-O-acetyl-2-azido-3-O-(2-azido-3-O-benzyl-2-deoxy-β-D-mannopyranosyl)-6-O-tert-butyldiphenylsilyl-2-deoxy-β-L-galactopyranoside

methyl 4-O-acetyl-2-azido-3-O-(2-azido-3-O-benzyl-4,6-O-benzylidene-2-deoxy-β-D-mannopyranosyl)-6-O-tert-butyldiphenylsilyl-2-deoxy-β-L-galactopyranoside

3,4,6-tri-O-acetyl-L-galactal

methyl 4-O-acetyl-2-azido-6-O-tert-butyldiphenylsilyl-2-deoxy-β-L-galactopyranoside