(2020/09/07)
(2018/09/21)
(2017/09/19)
p. 3860 - 3868
(2015/08/03)p. 13 - 33
(2007/10/03)(2008/06/13)
sulfuric acid
ethyl 1-cyclopropyl-7-fluoro-1,4-dihydro-4-oxo-3-quinolinecarboxylate
2,4-difluorobenzoyl chloride
ethyl 2-(2,4-difluorobenzoyl)-3-(dimethylamino)acrylate
1-cyclopropyl-4-ethylimino-7-fluoro-1,4-dihydroquinoline-3-carboxylic acid