2-O-benzoyl-4,6-O-benzylidene-3-O-levulinoyl-β-D-glucopyranosyl-(1->3)-2-O-benzoyl-4,6-O-benzylidene-β-D-glucopyranosyl-(1->3)-2-O-benzoyl-4,6-O-benzylidene-α-D-glucopyranosyl trichloroacetimidate 、
allyl 2-O-benzoyl-4,6-O-benzylidene-β-D-glucopyranosyl-(1->3)-2-O-benzoyl-4,6-O-benzylidene-β-D-glucopyranosyl-(1->3)-2-O-benzoyl-4,6-O-benzylidene-β-D-glucopyranoside 在
三氟甲磺酸三甲基硅酯 作用下,
以
二氯甲烷 为溶剂,
以54%的产率得到allyl 2-O-benzoyl-4,6-O-benzylidene-3-O-levulinoyl-β-D-glucopyranosyl-(1->3)-tetrakis[2-O-benzoyl-4,6-O-benzylidene-β-D-glucopyranosyl-(1->3)]-2-O-benzoyl-4,6-O-benzylidene-β-D-glucopyranoside