exo-(1R,5S)-3-[4-((5S)-5-{[(dichloroacetyl)amino]methyl}-2-oxo-1,3-oxazolidin-3-yl)-2,6-difluorophenyl]-3-azabicyclo[3.1.0]hexane-6-carboxylic acid 、
4-溴甲基-5-甲基-1,3-间二氧杂环戊烯-2-酮 在
potassium hydrogencarbonate 作用下,
以
DMF (N,N-dimethyl-formamide) 为溶剂,
反应 16.0h,
以33%的产率得到(5-methyl-2-oxo-1,3-dioxol-4-yl)methyl exo-(1R,5S)-3-[4-((5S)-5-{[(dichloroacetyl)amino]methyl}-2-oxo-1,3-oxazolidin-3-yl)-2,6-difluorophenyl]-3-azabicyclo[3.1.0]hexane-6-carboxylate