乙酸酐 、
methyl 2'-O-allyl-3'-O-benzyl-4'-O-triisopropylsilyl-β-D-glucopyranosyluronate-(1->3)-1,6-dianhydro-4-O-benzyl-2-deoxy-2-phthalimido-β-D-galactopyranose 在
三氟乙酸 作用下,
反应 2.0h,
以83%的产率得到methyl 2'-O-allyl-3'-O-benzyl-4'-O-triisopropylsilyl-β-D-glucopyranosyluronate-(1->3)-1,6-O-acetyl-4-O-benzyl-2-deoxy-2-phthalimido-D-galactopyranose