allyl (methyl 2,4-di-O-acetyl-3-O-benzyl-α-L-idopyranosyluronate)-(1->4)-O-2-azido-3,6-di-O-benzyl-2-deoxy-α-D-glucopyranoside

methyl (dimethylthexylsilyl 3-O-benzyl-β-L-idopyranoside)uronate

methyl 1,2,4-tri-O-acetyl-3-O-benzyl-β-L-idopyranosyluronate

methyl 4-O-acetyl-3-O-benzyl-β-L-idopyranuronate-1,2-(methyl orthoacetate)

methyl 3-O-benzyl-β-L-idopyranuronate 1,2-(tert-butyl orthoacetate)