(5R,7S)-5-[4-(trifluoromethoxy)benzyl]-3-(2,6-dichloro-pyridin-4-yl)-7-amino-1,3-diazabicyclo[3.3.0]octane-2,4-dione 、
氯磺酰异氰酸酯 以
乙醚 为溶剂,
反应 1.0h,
生成 (5R,7S)-5-[4-(Trifluoromethoxy)benzyl]-3-(2,6-dichloro-pyridin-4-yl)-7-ureido-1,3-diazabicyclo[3.3.0]octane-2,4-dione