申请人:Takahasi Hisashi
公开号:US20090012119A1
公开(公告)日:2009-01-08
This invention relates to a compound represented by the following formula (1):
[F.1]
its salt or a hydrate thereof.
R
1
represents hydrogen atom, an optionally substituted alkyl group containing 1 to 6 carbon atoms, a cycloalkyl group containing 3 to 6 carbon atoms, or a substituted carbonyl group derived from an amino acid, a dipeptide, or a tripeptide;
R
2
represents hydrogen atom, an optionally substituted alkyl group containing 1 to 6 carbon atoms, or a cycloalkyl group containing 3 to 6 carbon atoms;
R
3
represents an alkyl group containing 1 to 6 carbon atoms or a halogen-substituted alkyl group containing 1 to 6 carbon atoms;
R
4
represents a cycloalkyl group containing 3 to 6 carbon atoms or a halogen-substituted cycloalkyl group containing 3 to 6 carbon atoms;
R
5
represents hydrogen atom, phenyl group, acetoxymethyl group, pivaloyloxymethyl group, ethoxycarbonyl group, choline group, dimethylaminoethyl group, 5-indanyl group, phthalidyl group, 5-alkyl-2-oxo-1,3-dioxol-4-ylmethyl group, 3-acetoxy-2-oxobutyl group, or a phenylalkyl group comprising an alkylene group containing 1 to 6 carbon atoms and phenyl group;
X
1
and X
2
independently represent hydrogen atom or a halogen atom; and
X represents hydrogen atom or a halogen atom.
This compound exhibits broad and strong antibacterial activity to both Gram positive and Gram negative bacteria as well as high safety, and therefore, this compound is useful as a quinolone antibacterial drug, and a prophylactic and/or therapeutic drug for an infectious disease.
本发明涉及下列公式(1)所表示的化合物,其盐或水合物。R1代表氢原子、含1至6个碳原子的可选择取代的烷基、含3至6个碳原子的环烷基或由氨基酸、二肽或三肽衍生的取代的羰基基团;R2代表氢原子、含1至6个碳原子的可选择取代的烷基或含3至6个碳原子的环烷基;R3代表含1至6个碳原子的烷基或含1至6个碳原子的卤素取代的烷基;R4代表含3至6个碳原子的环烷基或含3至6个碳原子的卤素取代的环烷基;R5代表氢原子、苯基、乙酰氧甲基基团、季铵基、乙酰氧基羰基基团、胆碱基团、二甲氨基乙基基团、5-茚基基团、邻苯二甲酰基团、5-烷基-2-氧代-1,3-二氧杂环戊基甲基基团、3-乙酰氧基-2-氧代丁基基团或包含1至6个碳原子的烷基和苯基的苯基烷基基团;X1和X2分别代表氢原子或卤素原子;X代表氢原子或卤素原子。此化合物表现出广泛且强烈的抗细菌活性,对革兰氏阳性和革兰氏阴性细菌均有效,并且具有高度的安全性,因此,此化合物可用作喹诺酮类抗菌药物以及预防和/或治疗传染病的药物。