ethyl 2,3,4-tri-O-benzyl-6-O-chloroacetyl-1-thio-β-D-galactopyranoside

1,2,3,4-tetra-O-acetyl-α-D-galactopyranosiduronic acid

methyl (benzyl 2,3,4-tri-O-acetyl-β-D-galactopyranosid)uronate

methyl (benzyl 2-O-benzyl-β-D-galactopyranosid)uronate

ethyl 6-O-trityl-1-thio-β-D-galactopyranoside