6-fluoro-7-substituted-1,4-dihydro-4-oxoquinoline-3-carboxylic acids have been prepared. At the N-1 position "standard" substitution was employed with the ethyl, cyclopropyl, and p-fluorophenyl groups being used. At C-7 the introduction of some novel piperazines was made. Most notably, 2-(fluoromethyl)piperazine (10) and hexahydro-6-fluoro-1H-1,4-diazepine (16, fluorohomopiperazine) at the quinolone C-7 position
已经制备了一些新颖的6-
氟-7-取代的1,4-二氢-4-氧代
喹啉-3-羧酸。在N-1位置,使用“标准”取代,使用乙基,环丙基和对
氟苯基。在C-7中,引入了一些新颖的
哌嗪。最值得注意的是,
喹诺酮C-7位的2-(
氟甲基)
哌嗪(10)和六氢-6-
氟-1H-1,4-二氮杂卓(16,
氟高哌嗪)产生的产品具有与
环丙沙星参考品相似的体外抗菌活性。1-环丙基-6-
氟-7- [3-(
氟甲基)
哌嗪基] -1,4-二氢-4-氧
喹啉-3-羧酸(20)的体内疗效优于
环丙沙星(20) 2)。