(6R-trans)-3-<<4-(3-carboxy-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-7-quinolinyl)-1-piperazinyl>methyl>-7-<<(1,1-dimethylethoxy)carbonyl>amino>-8-oxo-5-thia-1-azabicyclo<4.2.0>oct-2-ene-2-carboxylic acid diphenylmethyl ester 、
三氟乙酸 在
苯甲醚 作用下,
以
二氯甲烷 为溶剂,
反应 16.0h,
以95%的产率得到(6R-trans)-7-amino-3-<<4-(3-carboxy-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-7-quinolinyl)-1-piperazinyl>methyl>-8-oxo-5-thia-1-azabicyclo<4.2.0>oct-2-ene-2-carboxylic acid trifluoroacetic acid salt