4-[(phenylcarboxy)methyl]benzyl N-benzyl-N-[5-(methyl((4-O-(2-azido-6-O-benzoyl-3-O-benzyl-2-deoxy-α-D-glucopyranosyl)-2-O-benzoyl-3-O-benzyl-α-L-idopyranosyl)oxy)uronate)-pentyl]carbamate 、 methyl (2R,3S,4S,5R,6S)-5-benzoyloxy-3-(4-oxopentanoyloxy)-4-phenylmethoxy-6-phenylsulfanyloxane-2-carboxylate 在
N-碘代丁二酰亚胺 、
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34%的产率得到4-[(phenylcarboxy)methyl]benzyl N-benzyl-N-[5-(methyl((4-O-(2-azido-6-O-benzoyl-3-O-benzyl-2-deoxy-4-O-(methyl(2-O-benzoyl-3-O-benzyl-4-O-levulinoyl-L-idopyranosyl)-uronate)-α-D-glucopyranosyl)-2-O-benzoyl-3-O-benzyl-α-L-idopyranosyl)oxy)uronate)pentyl]carbamate