(2R,3S,4R,5R,6S)-2-((((2R,3R,4R,5S,6R)-4,5-diacetoxy-3-(1,3-dioxoisoindolin-2-yl)-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)oxy)methyl)-5-(1,3-dioxoisoindolin-2-yl)-6-(4-methoxyphenoxy)tetrahydro-2H-pyran-3,4-diyl diacetate 、 3,4,6-tri-O-acetyl-2-deoxy-2-phthalimido-β-D-glucopyranosyl-O-trichloroacetimidate 在
三氟甲磺酸三甲基硅酯 作用下,
以
二氯甲烷 为溶剂,
以92%的产率得到p-methoxyphenyl 3,4,6-tri-O-acetyl-2-deoxy-2-phthalimido-β-D-glucopyranosyl-(1->6)-3,4-di-O-acetyl-2-deoxy-2-phthalimido-β-D-glucopyranosyl-(1->6)-3,4-di-O-acetyl-2-deoxy-2-phthalimido-β-D-glucopyranoside