申请人:——
公开号:US20030130302A1
公开(公告)日:2003-07-10
Quinolone carboxylic acid derivatives of formula (I) and pharmaceutically acceptable salts thereof have potent antibacterial activity:
1
wherein,
R
1
is a C
1-4
alkyl group, or phenyl or C
3-6
cycloalkyl group optionally substituted with one or more halogens;
R
2
is H, amino or C
1-4
alkyl group;
R
3
is H, C
1-4
alkyl group, or amino, aminomethyl or aminoethyl group optionally substituted with one C
1-4
alkyl radical;
W is N, CH or CY (Y is halogen, or C
1-4
alkyl or C
1-4
alkoxy group optionally substituted with one or more halogens); and
Pyr represents 2-, 3- or 4-pyridyl group,
provided that when W is C, W and R
1
are fused together to form COCH
2
CH(CH
3
), CCH
2
CH
2
CH(CH
3
), or CSCH
2
CH(CH
3
).
式(I)的喹诺酮羧酸衍生物及其药学上可接受的盐类具有很强的抗菌活性:
1
其中
R
1
是 C
1-4
烷基、苯基或 C
3-6
环烷基,可任选被一个或多个卤素取代;
R
2
是 H、氨基或 C
1-4
烷基;
R
3
是 H、C
1-4
烷基,或氨基、氨甲基或氨乙基,可选择被一个 C
1-4
烷基;
W 是 N、CH 或 CY(Y 是卤素或 C
1-4
烷基或 C
1-4
烷氧基,可选择被一个或多个卤素取代);以及
Pyr 代表 2-、3-或 4-吡啶基、
但当 W 为 C 时,W 和 R
1
融合在一起形成 COCH
2
CH(CH
3
)、CCH
2
CH
2
CH(CH
3
或 CSCH
2
CH(CH
3
).