1,4-苯二甲胺 、
2,3,4,6-tetra-O-benzoyl-β-D-galactopyranosyl-(1->4)-2,3,6-tri-O-benzoyl-β-D-glucopyranosyl-(1->3)-2,4-di-O-acetyl-1-O-allyl-α-D-glucopyranuronic acid 在
1-羟基苯并三唑 、
N,N-二异丙基乙胺 、
Methanaminium,N-[(dimethylamino)(3H-1,2,3-triazolo[4,5-b]pyridin-3-yloxy)methylene]-N-methyl-, hexafluorophosphate(1-) 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
以74%的产率得到[(2R,3R,4S,5R,6S)-4,5-dibenzoyloxy-6-[(2S,3S,4S,5R,6S)-3,5-diacetyloxy-2-[[4-[[[(2S,3S,4S,5R,6S)-3,5-diacetyloxy-4-[(2S,3R,4S,5R,6R)-3,4-dibenzoyloxy-6-(benzoyloxymethyl)-5-[(2S,3R,4S,5S,6R)-3,4,5-tribenzoyloxy-6-(benzoyloxymethyl)oxan-2-yl]oxyoxan-2-yl]oxy-6-prop-2-enoxyoxane-2-carbonyl]amino]methyl]phenyl]methylcarbamoyl]-6-prop-2-enoxyoxan-4-yl]oxy-3-[(2S,3R,4S,5S,6R)-3,4,5-tribenzoyloxy-6-(benzoyloxymethyl)oxan-2-yl]oxyoxan-2-yl]methyl benzoate