2,3,4,6-tetra-O-acetyl-D-glucosyl-1-amine 、
benzyl hydrogen (S)-2-(tert-butyldimethylsilyloxy)succinate 在
O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate 、
N,N-二异丙基乙胺 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
以99%的产率得到benzyl (2S)-2-[tert-butyl(dimethyl)silyl]oxy-4-oxo-4-[[(2R,3R,4S,5R,6R)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]amino]butanoate