糖B 、
6-O-acetyl-2-azido-3,4-di-O-benzyl-2-deoxy-α,β-D-glucopyranosyl trichloroacetimidate 在
糖B 作用下,
以78的产率得到methyl (2S,3S,4S,5R,6R)-6-(((1R,3R,4R,5S)-3-acetoxy-4-azido-6,8-dioxabicyclo[3.2.1]octan-2-yl)oxy)-3-(((2R,3R,4R,5S,6R)-6-(acetoxymethyl)-3-azido-4,5-bis(benzyloxy)tetrahydro-2H-pyran-2-yl)oxy)-4,5-bis(benzyloxy)tetrahydro-2H-pyran-2-carboxylate