methyl 6-[(2R,3R,4R,5S,6R)-4-acetyloxy-5-[(2S,3R,4S,5S,6R)-4-[(2S,3R,4R,5S,6R)-4-acetyloxy-5-[(2S,3R,4S,5S,6R)-4-[(4-methoxyphenyl)methoxy]-3-(4-oxopentanoyloxy)-5-phenylmethoxy-6-(phenylmethoxymethyl)oxan-2-yl]oxy-6-(phenylmethoxymethyl)-3-(2,2,2-trichloroethoxycarbonylamino)oxan-2-yl]oxy-3-(4-oxopentanoyloxy)-5-phenylmethoxy-6-(phenylmethoxymethyl)oxan-2-yl]oxy-6-(phenylmethoxymethyl)-3-(2,2,2-trichloroethoxycarbonylamino)oxan-2-yl]oxyhexanoate 在
苯甲醚 、
三氟乙酸 作用下,
以
二氯甲烷 为溶剂,
反应 1.0h,
以81%的产率得到methyl 6-[(2R,3R,4R,5S,6R)-4-acetyloxy-5-[(2S,3R,4S,5S,6R)-4-[(2S,3R,4R,5S,6R)-4-acetyloxy-5-[(2S,3R,4S,5R,6R)-4-hydroxy-3-(4-oxopentanoyloxy)-5-phenylmethoxy-6-(phenylmethoxymethyl)oxan-2-yl]oxy-6-(phenylmethoxymethyl)-3-(2,2,2-trichloroethoxycarbonylamino)oxan-2-yl]oxy-3-(4-oxopentanoyloxy)-5-phenylmethoxy-6-(phenylmethoxymethyl)oxan-2-yl]oxy-6-(phenylmethoxymethyl)-3-(2,2,2-trichloroethoxycarbonylamino)oxan-2-yl]oxyhexanoate