methyl (2S,3S,4S,5R,6S)-5-benzoyloxy-3-[(2R,3R,4R,5S,6R)-5-hydroxy-6-(naphthalen-2-ylmethoxymethyl)-4-phenylmethoxy-3-(2,2,2-trichloroethoxycarbonylamino)oxan-2-yl]oxy-4-phenylmethoxy-6-phenylsulfanyloxane-2-carboxylate 、 C
52H
49Cl
7N
2O
15 在
三氟甲磺酸三甲基硅酯 作用下,
以
二氯甲烷 为溶剂,
以65%的产率得到methyl (2S,3S,4S,5R,6R)-5-benzoyloxy-6-[(2R,3S,4R,5R,6R)-6-[(2S,3S,4S,5R,6S)-5-benzoyloxy-2-methoxycarbonyl-4-phenylmethoxy-6-phenylsulfanyloxan-3-yl]oxy-2-(naphthalen-2-ylmethoxymethyl)-4-phenylmethoxy-5-(2,2,2-trichloroethoxycarbonylamino)oxan-3-yl]oxy-3-[(2R,3R,4R,5S,6R)-5-(2-chloroacetyl)oxy-6-(naphthalen-2-ylmethoxymethyl)-4-phenylmethoxy-3-(2,2,2-trichloroethoxycarbonylamino)oxan-2-yl]oxy-4-phenylmethoxyoxane-2-carboxylate