methyl 5-acetamido-4-(4'-acetoxyphenyl)acetamino-7,8,9-tri-O-acetyl-2,6-anhydro-3,4,5-trideoxy-D-glycero-D-galacto-non-2-enonate 在
N-溴代丁二酰亚胺(NBS) 作用下,
以
水 、
乙腈 为溶剂,
反应 0.5h,
生成 methyl 5-acetamido-7,8,9-tri-O-acetyl-4-(4'-acetoxyphennyl)acetamido-3-bromo-3,4,5-trideoxy-D-erythro-β-L-manno-2-nonulopyranosonate 、 methyl 5-acetamido-7,8,9-tri-O-acetyl-4-(4'-acetoxyphennyl)acetamido-3-bromo-3,4,5-trideoxy-D-erythro-β-L-gluco-2-nonulopyranosonate