Bz(-2)[TBDMS(-3)][Bn(-4)][Bn(-6)]Glc(b1-3)[Bz(-2)][Bn(-4)][Bn(-6)]Glc(b)-SPh 、 [(2R,3R,4S,5R,6R)-2-[[(2R,3S,4S,5R,6S)-6-[[(2R,4aR,6R,7R,8S,8aR)-7-benzoyloxy-2-phenyl-6-phenylmethoxy-4,4a,6,7,8,8a-hexahydropyrano[3,2-d][1,3]dioxin-8-yl]oxy]-5-benzoyloxy-4-hydroxy-3-phenylmethoxyoxan-2-yl]methoxy]-4,5-bis(phenylmethoxy)-6-(phenylmethoxymethyl)oxan-3-yl] 4-methoxybenzoate 在
N-碘代丁二酰亚胺 、
三氟甲磺酸 、 4 A molecular sieve 作用下,
以
二氯甲烷 为溶剂,
反应 0.17h,
以76%的产率得到[(2R,3R,4S,5R,6R)-2-[[(2R,3R,4S,5R,6S)-6-[[(2R,4aR,6R,7R,8S,8aR)-7-benzoyloxy-2-phenyl-6-phenylmethoxy-4,4a,6,7,8,8a-hexahydropyrano[3,2-d][1,3]dioxin-8-yl]oxy]-5-benzoyloxy-4-[(2S,3R,4S,5R,6R)-3-benzoyloxy-4-[(2S,3R,4S,5R,6R)-3-benzoyloxy-4-[tert-butyl(dimethyl)silyl]oxy-5-phenylmethoxy-6-(phenylmethoxymethyl)oxan-2-yl]oxy-5-phenylmethoxy-6-(phenylmethoxymethyl)oxan-2-yl]oxy-3-phenylmethoxyoxan-2-yl]methoxy]-4,5-bis(phenylmethoxy)-6-(phenylmethoxymethyl)oxan-3-yl] 4-methoxybenzoate