Quinolone antimicrobial agents substituted with morpholines at the 7-position. Syntheses and structure-activity relationships
摘要:
A series of novel 7-substituted 1-cyclopropyl-6,8-difluoro- 1,4-dihydro-4-oxo-3-quinolinecarboxylic acids have been prepared and tested for antibacterial activities and for convulsive activities in combination with nonsteroidal antiinflammatory drug. Structure-activity relationships revealed that 7-(2-(aminomethyl)morpholino) derivative 28 had a better Gram-positive activity than the reference quinolones, such as ciprofloxacin, norfloxacin, and ofloxacin. Its Gram-negative activity was equipotent with those of norfloxacin and ofloxacin but was inferior to that of ciprofloxacin. In mouse systemic infection models, 28 showed an excellent therapeutic efficacy which might result from the potent antibacterial activity and suitable physicochemical properties. Convulsive activities of 7-morpholino derivatives in combination with nonsteroidal antiinflammatory drug fenbufen or its metabolite biphenylacetic acid markedly diminished as compared to those of 7-piperazino derivatives in the electrophysiological, biochemical, and behavioral experiments. These results suggest that 28 (Y-26611) is a novel quinolone with reduced neurotoxic excitatory adverse reaction.
Quinolone antimicrobial agents substituted with morpholines at the 7-position. Syntheses and structure-activity relationships
摘要:
A series of novel 7-substituted 1-cyclopropyl-6,8-difluoro- 1,4-dihydro-4-oxo-3-quinolinecarboxylic acids have been prepared and tested for antibacterial activities and for convulsive activities in combination with nonsteroidal antiinflammatory drug. Structure-activity relationships revealed that 7-(2-(aminomethyl)morpholino) derivative 28 had a better Gram-positive activity than the reference quinolones, such as ciprofloxacin, norfloxacin, and ofloxacin. Its Gram-negative activity was equipotent with those of norfloxacin and ofloxacin but was inferior to that of ciprofloxacin. In mouse systemic infection models, 28 showed an excellent therapeutic efficacy which might result from the potent antibacterial activity and suitable physicochemical properties. Convulsive activities of 7-morpholino derivatives in combination with nonsteroidal antiinflammatory drug fenbufen or its metabolite biphenylacetic acid markedly diminished as compared to those of 7-piperazino derivatives in the electrophysiological, biochemical, and behavioral experiments. These results suggest that 28 (Y-26611) is a novel quinolone with reduced neurotoxic excitatory adverse reaction.
(EN) Compounds having formula (I), and pharmaceutically acceptable salts, esters, amides and prodrugs thereof, wherein one of R104 and R105 is hydrogen, and the other of R104 and R105 is a group having formula (II), as well as pharmaceutically compositions containing such compounds and methods of immunomodulative therapy utilizing the same.(FR) L'invention concerne des composés ayant la formule (I), et les sels, esters, amides et précurseurs de ces composés, acceptables sur le plan pharmaceutique. Dans cette formule, l'un d'entre R104 et R105 est l'hydrogène, et l'autre d'entre R104 et R105 est un radical ayant la formule (II). L'invention concerne également les compositions pharmaceutiques contenant de tels composés et des thérapies immunomodulatrices faisant appel à elles.
Quinolone antimicrobial agents substituted with morpholines at the 7-position. Syntheses and structure-activity relationships
A series of novel 7-substituted 1-cyclopropyl-6,8-difluoro- 1,4-dihydro-4-oxo-3-quinolinecarboxylic acids have been prepared and tested for antibacterial activities and for convulsive activities in combination with nonsteroidal antiinflammatory drug. Structure-activity relationships revealed that 7-(2-(aminomethyl)morpholino) derivative 28 had a better Gram-positive activity than the reference quinolones, such as ciprofloxacin, norfloxacin, and ofloxacin. Its Gram-negative activity was equipotent with those of norfloxacin and ofloxacin but was inferior to that of ciprofloxacin. In mouse systemic infection models, 28 showed an excellent therapeutic efficacy which might result from the potent antibacterial activity and suitable physicochemical properties. Convulsive activities of 7-morpholino derivatives in combination with nonsteroidal antiinflammatory drug fenbufen or its metabolite biphenylacetic acid markedly diminished as compared to those of 7-piperazino derivatives in the electrophysiological, biochemical, and behavioral experiments. These results suggest that 28 (Y-26611) is a novel quinolone with reduced neurotoxic excitatory adverse reaction.