phenyl 3-O-benzyl-4-O-tert-butyldimethylsilyl-2,6-dideoxy-β-D-ribohexapyranosyl-(1→4)-3-O-benzyl-2,6-dideoxy-β-D-ribo-hexapyranosyl-(1→4)-3-O-benzyl-6-deoxy-2-O-methyl-1-thio-α-D-ribohexopyranoside

1,2,4,6-tetra-O-acetyl-3-O-benzylallopyranose

phenyl 3-O-benzyl-2-O-methyl-6-O-p-toluenesulfonyl-1-thio-α-D-ribohexopyranoside

phenyl 3-O-benzyl-6-deoxy-2-O-methyl-1-thio-α-D-ribohexopyranoside