乙酸酐 、 6-{(2R,3R,4S,5R,6R)-3,5-Bis-[(2S,3R,4R,5S,6R)-4,5-diacetoxy-6-acetoxymethyl-3-(1,3-dioxo-1,3-dihydro-isoindol-2-yl)-tetrahydro-pyran-2-yloxy]-4-hydroxy-6-hydroxymethyl-tetrahydro-pyran-2-yloxy}-hexanoic acid methyl ester 在
吡啶 、
4-二甲氨基吡啶 作用下,
反应 48.0h,
生成
6-{(2R,3R,4S,5S,6R)-4-Acetoxy-6-acetoxymethyl-3,5-bis-[(2S,3R,4R,5S,6R)-4,5-diacetoxy-6-acetoxymethyl-3-(1,3-dioxo-1,3-dihydro-isoindol-2-yl)-tetrahydro-pyran-2-yloxy]-tetrahydro-pyran-2-yloxy}-hexanoic acid methyl ester