O-[3-O-(6-methyl-3-O-benzyl-2,4-di-O-pivaloyl-α-L-idopyranuronosyl)-2-deoxy-4,6-di-O-levulinoyl-2-trifluoroacetamido-α,β-D-galactopyranosyl] trichloroacetimidate 、 在
三氟甲磺酸三甲基硅酯 作用下,
以
二氯甲烷 为溶剂,
反应 1.0h,
以53%的产率得到4-methoxyphenyl O-(6-methyl 3-O-benzyl-2,4-di-O-pivaloyl-α-L-idopyranuronosyl)-(1→3)-O-(2-deoxy-4,6-di-O-levulinoyl-2-trifluoroacetamido-β-D-galactopyranosyl)-(1→4)-O-(6-benzyl 2-O-benzoyl-3-O-benzyl-β-D-glucopyranuronosyl)-(1→3)-2-deoxy-4,6-O-(di-tert-butylsilylene)-2-trifluoroacetamido-β-D-galactopyranoside