申请人:DAIICHI PHARMACEUTICAL CO., LTD.
公开号:EP0995744A1
公开(公告)日:2000-04-26
An antibacterial drug having potent antibacterial activities upon various bacteria including resistant strains and high safety is disclosed, which comprises as an active ingredient, quinolone derivatives represented by the following formula (I), its salts or hydrates thereof:
wherein R1 represents a hydrogen atom or an alkyl group having 1 to 6 carbon atoms,
R2 represents a halogenomethoxyl group or an alkoxyl group,
R3 represents an alkyl group, an alkenyl group, a halogenoalkyl group, a cyclic alkyl group, a heteroaryl group, an alkoxyl group or an alkylamino group, and
R4 represents a hydrogen atom, a phenyl group, an acetoxymethyl group, a pivaloyloxymethyl group, an ethoxycarbonyl group, a choline group, a dimethylaminoethyl group, a 5-indanyl group, a phthalidinyl group, a 5-alkyl-2-oxo-1,3-dioxol-4-ylmethyl group, 3-acetoxy-2-oxobutyl group, an alkyl group, an alkoxylmethyl group or a phenylalkyl group. These substituents may further have additional substituents.
本发明公开了一种对包括耐药菌株在内的各种细菌具有强效抗菌活性且安全性高的抗菌药,其活性成分包括下式(I)代表的喹诺酮衍生物、其盐类或水合物:
其中 R1 代表氢原子或具有 1 至 6 个碳原子的烷基、
R2 代表卤代甲氧基或烷氧基、
R3 代表烷基、烯基、卤代烷基、环烷基、杂芳基、烷氧基或烷基氨基,以及
R4 代表氢原子、苯基、乙酰氧甲基、新戊酰氧甲基、乙氧基羰基、胆碱基、二甲基氨基乙基、5-茚满基、酞丁基、5-烷基-2-氧代-1,3-二氧戊环-4-基甲基、3-乙酰氧基-2-氧代丁基、烷基、烷氧基甲基或苯基烷基。这些取代基可进一步具有其他取代基。