申请人:Daiichi Sankyo Company, Limited
公开号:EP1857453A1
公开(公告)日:2007-11-21
This invention relates to a compound represented by the following formula (1) :
its salt or a hydrate thereof.
R1 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;
R2 represents hydrogen atom, an optionally substituted alkyl group containing 1 to 6 carbon atoms, or a cycloalkyl group containing 3 to 6 carbon atoms;
R3 represents an alkyl group containing 1 to 6 carbon atoms or a halogen-substituted alkyl group containing 1 to 6 carbon atoms;
R4 represents a cycloalkyl group containing 3 to 6 carbon atoms or a halogen-substituted cycloalkyl group containing 3 to 6 carbon atoms;
R5 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;
X1 and X2 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.
本发明涉及下式(1)所代表的化合物:
其盐或其
水合物。
R1 代表氢原子、含有 1 至 6 个碳原子的任选取代的烷基、含有 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;
R2 代表氢原子、含有 1 至 6 个碳原子的任选取代的烷基或含有 3 至 6 个碳原子的环烷基;
R3 代表含 1-6 个碳原子的烷基或含 1-6 个碳原子的卤代烷基;
R4 代表含有 3 至 6 个碳原子的环烷基或含有 3 至 6 个碳原子的卤代环烷基;
R5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-
茚基、
酞基、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、或由含 1 至 6 个碳原子的亚烷基和苯基组成的苯基烷基;
X1 和 X2 各自代表氢原子或卤素原子;以及
X 代表氢原子或卤素原子。
该化合物对革兰氏阳性菌和革兰氏阴性菌均具有广泛而强大的抗菌活性,且安全性高,因此,该化合物可用作喹诺
酮类抗菌药物,以及传染性疾病的预防和/或治疗药物。