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US 4,791,118 AGranted
Quinolonecarboxylic acid derivatives and their preparation
AssigneeKyorin Pharmaceutical Co., Ltd.
InventorsKuniyoshi Masuzawa, Seigo Suzue, Keiji Hirai, Takayoshi Ishizaki
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Abstract
Quinolonecarboxylic acid derivatives of the following formula, ##STR1## wherein R is hydrogen atom or lower alkyl group, Alk is lower alkylene group and X is hydrogen atom or halogen atom; the hydrates and pharmaceutically acceptable salts thereof are useful as antibacterial agent.
Claims4
A compound of the formula (I);
- ##STR4## wherein R is hydrogen atom or lower alkyl group, Alk is lower alkylene group and X is hydrogen atom or halogen atom;
- the hydrates or the pharmaceutically acceptable acid addition or alkali salts thereof.
Dependencies are inferred from the claim text.