O-[3-O-(methyl 3-O-benzyl-2,4-di-O-levulinoyl-α-L-idopyranosyluronate)-4,6-di-O-acetyl-2-deoxy-2-trifluoroacetamido-α,β-D-galactopyranosyl] trichloroacetimidate 、
4-methoxyphenyl 3-O-(benzyl 2-O-benzoyl-3-O-benzyl-β-D-glucopyranosyluronate)-4,6-O-di-tert-butylsilylene-2-deoxy-2-trifluoroacetamido-β-D-galactopyranoside 在
三氟甲磺酸三甲基硅酯 作用下,
以
二氯甲烷 为溶剂,
反应 0.75h,
以74%的产率得到4-methoxyphenyl O-(methyl 3-O-benzyl-2,4-di-O-levulinoyl-α-L-idopyranosyluronate)-(1→3)-O-(4,6-di-O-acetyl-2-deoxy-2-trifluoroacetamido-β-D-galactopyranosyl)-(1→4)-O-(benzyl 2-O-benzoyl-3-O-benzyl-β-D-glucopyranosyluronate)-(1→3)-4,6-O-di-tert-butylsilylene-2-deoxy-2-trifluoroacetamido-β-D-galactopyranoside