Substituted dihydroquinolone carboxylic acids, anti-bacterial compositions containing them
申请人:PFIZER INC.
公开号:EP0184384B1
公开(公告)日:1989-08-02
US4623650A
申请人:——
公开号:US4623650A
公开(公告)日:1986-11-18
Antibiotic derivatives of
申请人:Pfizer Inc.
公开号:US04623650A1
公开(公告)日:1986-11-18
1-Substituted-6-fluoro-7-aryl-(8-fluoro)-1,4-dihydroquinol-4-one 3-carboxylic acids having antibacterial activity are prepared by reacting the corresponding alkyl 1-substituted-6-fluoro-7-bromo-(8-fluoro)-1,4-dihydroquinol-4-one-3-carbox ylate with an arylmetallic compound and hydrolyzing the ester formed.