Novel rifamycin derivatives of formula I (both hydroquinone and corresponding quinone (C
1
-C
4
) forms):
or their salts, hydrates or prodrugs thereof,
wherein: a preferred R comprises hydrogen, acetyl; L is a linker, a preferred linker group elements selected from any combination of 1 to 5 groups shown FIG.
1
, provided L is not
wherein R
1
is H, methyl or alkyl. The inventive compounds exhibit valuable antibiotic properties. Formulations having these compounds can be used in the control or prevention of infectious diseases in mammals, both humans and non-humans. In particular, the compounds exhibit a pronounced antibacterial activity, even against multiresistant strains of microbes.
This invention provides novel 4-oxoquinolizine compounds and their uses for a series of broad-spectrum antibiotics having no cross-resistance to existing or emerging classes of antibiotics. In addition the novel 4-oxoquinolizine compounds are useful against CDC Category A and B pathogens The invention also provides pharmaceutical compositions comprising certain 4-oxoquinolizines in combination with subinhibitory concentrations of polymyxin B against clinical isolates which are resistant to quinolones, carbapenems and other antimicrobial agents.
Preparation and antibacterial activity of pyridopyridone analogs: C-1 modifications
作者:Larry L. Klein、David A. DeGoey、Sheela A. Thomas、Clinton M. Yeung、Christina L. Leone、David J. Grampovnik、Daniel T. Chu、Paul A. Lartey
DOI:10.1016/s0960-894x(97)00179-0
日期:1997.5
Variation of the C-1 position of the pyridopyridone antibacterials shows a sensitivity to both size and electronic character of the substituent. (C) 1997 Elsevier Science Ltd.
QUINOLIZINONE TYPE COMPOUNDS
申请人:Abbott Laboratories
公开号:EP0871628A1
公开(公告)日:1998-10-21
RIFAMYCIN DERIVATIVES FOR TREATING MICROBIAL INFECTIONS