Synthesis and biological activity of 5-amino- and 5-hydroxyquinolones, and the overwhelming influence of the remote N1-substituent in determining the structure-activity relationship
摘要:
A series of 5-amino- and 5-hydroxyquinolone antibacterials substituted at C7 with a select group of common piperazinyl and 3-aminopyrrolidinyl side chains was prepared. These 5-substituted derivatives were compared to the analogous 5-hydrogen compounds for antiinfective activity by using DNA gyrase inhibition, minimum inhibitory concentrations against a variety of bacteria, and in vivo efficacy in the mouse infection model. The influence on the structure-activity relationships of varied substituents at C8 (H, F, Cl) and Ni (ethyl, cyclopropyl, difluorophenyl) was also studied. The results showed that several of the structure-activity conclusions regarding side-chain bulk at C7, the effect of halogen at C8, and the effect of the C5-amino group were greatly influenced by the choice of the N1-substituent. Several outstanding broad spectrum quinolones were identified in this work. In particular, the spectrum and potency of the 7-piperazinyl quinolones could be greatly enhanced by the judicious choice of C5-, C8-, and N1-substitutents.
Synthesis and biological activity of 5-amino- and 5-hydroxyquinolones, and the overwhelming influence of the remote N1-substituent in determining the structure-activity relationship
摘要:
A series of 5-amino- and 5-hydroxyquinolone antibacterials substituted at C7 with a select group of common piperazinyl and 3-aminopyrrolidinyl side chains was prepared. These 5-substituted derivatives were compared to the analogous 5-hydrogen compounds for antiinfective activity by using DNA gyrase inhibition, minimum inhibitory concentrations against a variety of bacteria, and in vivo efficacy in the mouse infection model. The influence on the structure-activity relationships of varied substituents at C8 (H, F, Cl) and Ni (ethyl, cyclopropyl, difluorophenyl) was also studied. The results showed that several of the structure-activity conclusions regarding side-chain bulk at C7, the effect of halogen at C8, and the effect of the C5-amino group were greatly influenced by the choice of the N1-substituent. Several outstanding broad spectrum quinolones were identified in this work. In particular, the spectrum and potency of the 7-piperazinyl quinolones could be greatly enhanced by the judicious choice of C5-, C8-, and N1-substitutents.
4-oxo-1,4-dihydroquinoline-3-carboxylic acid derivative as antibacterial
申请人:Warner-Lambert Company
公开号:US04822801A1
公开(公告)日:1989-04-18
Novel naphthyridine-, quinoline- and benzoxazinecarboxylic 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.
Novel naphthyridine-, quinoline- and benzoxazinecarboxylic 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.
Substituted-9-fluoro-3-methyl-7-oxo-2,3-dihydro-7H-pyrido[1,2,3-de][1,4]benzoxazine-6-carboxylic acids; substituted-5-amino-6-fluoro-4-oxo-1,4-dihydroquinoline-3-carboxylic acids; substituted-5-amino-6-fluoro-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acids; derivatives thereof; pharmaceutical compositions comprising the compounds; and processes for producing the compounds
申请人:WARNER-LAMBERT COMPANY
公开号:EP0172651A1
公开(公告)日:1986-02-26
Novel naphthyridine-, quinoline- and benzoxazine carboxylic acids of formula
or
as antibacterial agents are described as well as methods for their manufacture and formulation. Also disclosed are certain novel intermediates used in the manufacture of the antibacterial agents.
Substituted-6-fluoro-4-oxo-1,4-dihydroquinoline-3-carboxylic acids, derivatives thereof, pharmaceutical compositions comprising the compounds, and processes for producing the compounds
申请人:WARNER-LAMBERT COMPANY
公开号:EP0265230A1
公开(公告)日:1988-04-27
Novel naphthyridine-, quinoline- and benzoxazinecarboxylic acids of formula
in which Z is
are disclosed. The compounds are useful as antibacterial agents. Also disclosed is a process for producing the compounds and a pharmaceutical composition comprising the compounds.
新颖的萘啶、喹啉和苯并噁嗪羧酸,其式为
其中 Z 为
的新型萘啶-喹啉-和苯并噁嗪羧酸。这些化合物可用作抗菌剂。还公开了生产这些化合物的工艺和包含这些化合物的药物组合物。
5-Amino and 5-hydroxy-6,8-difluoroquinolones as antibacterial agents