Novel naphthyridine-, and quinolinecarboxylic acids as antibacterial agents are described as well as methods for their manufacture, formulation, and use in treating bacterial infections including the description of certain novel intermediates used in the manufacture of the antibacterial agents.
Intermediates for anti-microbial quinolone carboxylic acids
申请人:Otsuka Pharmaceutical Company, Limited
公开号:US05811576A1
公开(公告)日:1998-09-22
Novel 4-oxoquinoline-3-carboxylic acid compounds of the formula: ##STR1## wherein R.sup.1 is cyclopropyl which may have 1 to 3 substituents of alkyl and halogen; phenyl which may be substituted by 1 to 3 substituents of alkoxy, halogen and OH; alkyl which may be substituted by halogen, alkanoyloxy or OH; alkenyl; or thienyl, R.sup.2 is 5- to 9-membered saturated or unsaturated heterocyclic ring which may be substituted, R.sup.3 is alkyl, R is H or alkyl, and X is halogen, and pharmaceutically acceptable salts thereof, said compounds having excellent antimicrobial activity and hence being useful as an antimicrobial agent, and a pharmaceutical composition containing said compound as an active ingredient.
Novel quinoline derivatives, processes for preparation thereof and antibacterial agent containing them
申请人:Dainippon Pharmaceutical Co., Ltd.
公开号:EP0319906A2
公开(公告)日:1989-06-14
1-Substituted-6-fluoro-5-methyl-7-(piperazinyl or pyrrolidinyl)-1,4-dihydro-4-oxoquinoline-3-carboxylic acids (I) and processes for preparation thereof. The acids are used for treatment of a bacterial infectious desease.
Synthesis and biological activity of 5-alkyl-1,7,8-trisubstituted-6-fluoroquinoline-3-carboxylic acids
作者:Susan E. Hagen、John M. Domagala、Carl L. Heifetz、Judith Johnson
DOI:10.1021/jm00107a040
日期:1991.3
A series of 5-alkyl-1,7,8-trisubstituted-6-fluoro-1,4-dihydro-4-oxo-3-quinolinecarboxylic acids was prepared and evaluated for in vitro and in vivo antibacterial activity. When compared to the 5-hydrogen analogues, the presence of the 5-methyl group enhanced in vitro potency for those compounds containing a cyclopropyl moiety at N1 but decreased potency for those containing an ethyl group at N1. Replacing the 5-methyl with a 5-ethyl significantly reduced the efficacy. In general, the 5-methyl and 5-hydrogen analogues were equipotent in vivo. Several of the 5-methyl-1-cyclopropylquinolones displayed excellent in vitro and in vivo activity, warranting further development.
7-Piperazinyl- or 7-Morpholino-4-oxo-quinoline-3-carboxylic acid derivatives, their preparation and their use as antimicrobial agents