乙酸酐 、
1,4-di-O-acetyl-2,5,6-tri-O-benzyl-3-deoxy-3-N-methylacetamido-D-threo-hex-1-enose 在
三乙胺 作用下,
生成 1-O-acetyl-2,5,6-tri-O-benzyl-3-deoxy-3-N-methylacetamido-β-D-glucofuranose 、 1-O-acetyl-2,5,6-tri-O-benzyl-3-deoxy-3-N-methylacetamido-α-D-glucofuranose