[(2R,3S,4S,5R,6S)-3,4,5-triacetyloxy-6-[[(1R,2S,3R,4R,5R)-4-(1,3-dioxoisoindol-2-yl)-3-[(2S,3S,4R,5R,6S)-6-methyl-3,4,5-tris(phenylmethoxy)oxan-2-yl]oxy-6,8-dioxabicyclo[3.2.1]octan-2-yl]oxy]oxan-2-yl]methyl acetate 、
乙酸酐 在
三氟乙酸 作用下,
反应 1.0h,
以93.2%的产率得到[(2R,3S,4R,5R,6S)-6-acetyloxy-5-(1,3-dioxoisoindol-2-yl)-4-[(2S,3S,4R,5R,6S)-6-methyl-3,4,5-tris(phenylmethoxy)oxan-2-yl]oxy-3-[(2S,3R,4S,5S,6R)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxyoxan-2-yl]methyl acetate