7-(1-tert-Butoxycarbonylamino-3-azabicyclo[4.1.0]-hept-3-yl)-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-quinoline-3-carboxylic acid 、
盐酸 以to provide the title compound, mp 235° C. (152.4 mg, 0.387 mmol, 62% yield)的产率得到7-(1-Amino-3-azabicyclo[4.1.0]hept-3-yl)-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-quinoline-3-carboxylic acid, hydrochloride salt