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Related Experiment Videos

Development of the quinolones.

Monique I Andersson1, Alasdair P MacGowan

  • 1Bristol Centre for Antimicrobial Research and Evaluation, North Bristol NHS Trust and University of Bristol, Department of Medical Microbiology, Southmead Hospital, Westbury-on-Trym, Bristol BS10 5NB, UK.

The Journal of Antimicrobial Chemotherapy
|April 19, 2003
PubMed
Summary

Quinolone antibacterials, developed since the 1960s, show enhanced efficacy and improved activity against Gram-positive bacteria. Newer quinolone derivatives are vital for treating respiratory infections.

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Area of Science:

  • Medicinal Chemistry
  • Pharmacology
  • Microbiology

Background:

  • Quinolones, first discovered in the 1960s, are a significant class of antibacterials.
  • Nalidixic acid was the initial quinolone, with numerous derivatives synthesized since.

Purpose of the Study:

  • To review the development and antibacterial properties of quinolone derivatives.
  • To highlight structural modifications enhancing efficacy and identify associated adverse events.

Main Methods:

  • Review of synthesized quinolone and naphthyridone derivatives.
  • Analysis of structure-activity relationships, including effects of substitutions at various ring positions.
  • Evaluation of in vitro activity, pharmacokinetics, and adverse event profiles.

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Main Results:

  • Structural modifications, such as fluorine at position 6, improved antibacterial efficacy.
  • Specific substitutions correlated with adverse events like photo-reactivity (position 8) and QTc prolongation (position 5).
  • Recent quinolones demonstrate enhanced anti-Gram-positive activity and improved pharmacokinetics.

Conclusions:

  • Progressive molecular modifications have led to potent quinolone antibacterials with broad-spectrum activity.
  • Newer agents like moxifloxacin show promise for treating respiratory infections in the 21st century.