以73的产率得到methyl (6-O-benzyl-2,3,4-tri-O-methyl-α-D-glucopyranosyl)-(1→4)-(2,3-di-O-methyl-β-D-glucopyranosyl)-(1→4)-(2,3,6-tri-O-benzyl-α-D-glucopyranosyl)-(1→4)-(methyl 2,3-di-O-methyl-α-L-idopyranosyluronate)-(1→4)-2,3,6-tri-O-benzyl-α-d-glucopyranoside