[(2R,4aR,6S,7R,8R,8aS)-2-phenyl-6-phenylsulfanyl-7-(2,2,2-trichloroethoxycarbonylamino)-4,4a,6,7,8,8a-hexahydropyrano[3,2-d][1,3]dioxin-8-yl] 2,2,2-trichloroethyl carbonate 、
TrocNH(-2d)Gal3Ac4Ac6Ac(b1-4)[Bn(-2)][Bn(-6)]Gal(b1-4)[pivaloyl(-2)][Bn(-3)][Bn(-6)]Glc(b)-O-Bn 在
N-碘代丁二酰亚胺 、
三氟甲磺酸 作用下,
以
二氯甲烷 为溶剂,
反应 0.67h,
以84%的产率得到[(2R,3R,4S,5R,6R)-5-[(2S,3R,4S,5S,6R)-4-[[(2R,4aR,6S,7R,8R,8aS)-2-phenyl-7-(2,2,2-trichloroethoxycarbonylamino)-8-(2,2,2-trichloroethoxycarbonyloxy)-4,4a,6,7,8,8a-hexahydropyrano[3,2-d][1,3]dioxin-6-yl]oxy]-5-[(2S,3R,4R,5R,6R)-4,5-diacetyloxy-6-(acetyloxymethyl)-3-(2,2,2-trichloroethoxycarbonylamino)oxan-2-yl]oxy-3-phenylmethoxy-6-(phenylmethoxymethyl)oxan-2-yl]oxy-2,4-bis(phenylmethoxy)-6-(phenylmethoxymethyl)oxan-3-yl] 2,2-dimethylpropanoate