申请人:——
公开号:US20020072608A1
公开(公告)日:2002-06-13
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:
1
wherein R
1
represents a hydrogen atom or an alkyl group having 1 to 6 carbon atoms,
R
2
represents a halogenomethoxyl group or an alkoxyl group,
R
3
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
R
4
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.
揭示了一种具有对各种细菌具有强效抗菌活性,包括耐药菌株和高安全性的抗菌药物,其包括以下式(I)所代表的喹诺酮衍生物作为活性成分,其盐或水合物:其中R1代表氢原子或具有1至6个碳原子的烷基基团,R2代表卤代甲氧基基团或烷氧基基团,R3代表烷基基团、烯基基团、卤代烷基基团、环烷基基团、杂环芳基团、烷氧基基团或烷基氨基基团,R4代表氢原子、苯基、乙酰氧甲基基团、戊二酰氧甲基基团、乙氧羰基基团、胆碱基团、二甲氨基乙基基团、5-茚基基团、邻苯二甲酰基基团、5-烷基-2-氧代-1,3-二氧杂环戊-4-基甲基基团、3-乙酰氧基-2-氧代丁基基团、烷基基团、烷氧基甲基基团或苯基烷基基团。这些取代基还可能具有额外的取代基。