Document Detail

In vitro and in vivo activity of DL-8280, a new oxazine derivative.
MedLine Citation:
PMID:  6960805     Owner:  NLM     Status:  MEDLINE    
DL-8280, 9-fluoro-3-methyl-10-(4-methyl-1-piperazinyl)-7-oxo-2,3-dihydro-7H- pyrido-(1,2,3-de)1,4-benzoxazine-6-carboxylic acid, is a new nalidixic acid analog with a broad spectrum of antibacterial activity against gram-negative and gram-positive bacteria, including obligate anaerobes. The activity of DL-8280 against Enterobacteriaceae, Pseudomonas aeruginosa, Haemophilus influenzae, Neisseria gonorrhoeae, and Clostridium perfringens was roughly comparable to that of norfloxacin and far exceeded that of pipemidic acid and nalidixic acid. DL-8280 had greater activity against Staphylococcus spp., Streptococcus spp., Pseudomonas maltophilia, Acinetobacter spp., and Bacteroides fragilis than did norfloxacin, pipemidic acid, and nalidixic acid. Nalidixic acid-resistant Enterobacteriaceae, ampicillin-resistant gonococci, and clindamycin-resistant obligate anaerobes were also susceptible to DL-8280. The activity of DL-8280 was affected very little by inoculum size, and its action was bactericidal at two times the minimal inhibitory concentrations at most. Administered orally to mice experimentally infected with Staphylococcus aureus, Streptococcus pyogenes, Escherichia coli, Proteus mirabilis, Serratia marcescens, or P. aeruginosa, DL-8280 was 2 to 7 times more effective than norfloxacin and 7 to more than 50 times more active than pipemidic acid.
K Sato; Y Matsuura; M Inoue; T Une; Y Osada; H Ogawa; S Mitsuhashi
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Antimicrobial agents and chemotherapy     Volume:  22     ISSN:  0066-4804     ISO Abbreviation:  Antimicrob. Agents Chemother.     Publication Date:  1982 Oct 
Date Detail:
Created Date:  1983-02-14     Completed Date:  1983-02-14     Revised Date:  2009-11-18    
Medline Journal Info:
Nlm Unique ID:  0315061     Medline TA:  Antimicrob Agents Chemother     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  548-53     Citation Subset:  IM    
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MeSH Terms
Anti-Bacterial Agents / pharmacology*,  therapeutic use
Bacteria / drug effects*
Bacterial Infections / drug therapy*
Microbial Sensitivity Tests
Oxazines / pharmacology*,  therapeutic use
Reg. No./Substance:
0/Anti-Bacterial Agents; 0/Oxazines; 82419-36-1/Ofloxacin

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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