2-azido-6-O-benzoyl-3-O-benzyl-2-deoxy-4-O-levulinoyl-α-D-glucopyranosyl trichloroacetimidate 、 4-(phenylcarboxymethyl)benzyl N-benzyl N-(5-(2-O-benzoyl-3-O-benzyl-6-O-para-methoxybenzyl-α-L-idopyranosyloxy)pentyl)carbamate 在
三氟甲磺酸三甲基硅酯 作用下,
以
二氯甲烷 为溶剂,
反应 2.0h,
以61%的产率得到4-[(phenylcarboxy)methyl]benzyl N-benzyl-N-[5-((4-O-(2-azido-3-O-benzyl-6-O-benzoyl-2-deoxy-4-O-levulinoyl-α-D-glucopyranosyl)-3-O-benzyl-2-O-benzoyl-6-O-(p-methoxybenzyl)-α-L-idopyranosyl)oxy)pentyl]carbamate