描述:
1-cyclopropyl-6-fluoro-7-[(5E)-5-methoxyimino-2-[(2-methylpropan-2-yl)oxycarbonyl]-2,7-diazaspiro[3.4]octan-7-yl]-4-oxo-1,8-naphthyridine-3-carboxylic acid 以58.3的产率得到1-cyclopropyl-6-fluoro-7-(8-methoxyimino-2,6-diaza-spiro[3,4]oct-6-yl)-4-oxo-1,4-dihydro[1,8]naphthyridine-3-carboxylic acid hydrochloride