2,2-Dimethyl-propionic acid (2R,3S,4R,5R,6R)-4-acetoxy-3-[(2S,3R,4S,5R,6R)-3-acetoxy-6-(2,2-dimethyl-propionyloxymethyl)-4,5-dihydroxy-tetrahydro-pyran-2-yloxy]-6-benzyloxy-5-(1,3-dioxo-1,3-dihydro-isoindol-2-yl)-tetrahydro-pyran-2-ylmethyl ester 、 2,2-Dimethyl-propionic acid (2R,3S,4R,5R,6S)-4-acetoxy-5-(1,3-dioxo-1,3-dihydro-isoindol-2-yl)-6-phenylsulfanyl-3-[(2S,3R,4S,5S,6R)-3,4,5-triacetoxy-6-(2,2-dimethyl-propionyloxymethyl)-tetrahydro-pyran-2-yloxy]-tetrahydro-pyran-2-ylmethyl ester 在
N-碘代丁二酰亚胺 、
三氟甲磺酸 作用下,
反应 2.0h,
以76%的产率得到