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Synthesis, Characterization and Biological Evaluations of Ciprofloxacin Carboxamide Analogues

  • Sultana, Najma (Department of Pharmaceutical Chemistry, Research Institute of Pharmaceutical Sciences, Faculty of Pharmacy, University of Karachi) ;
  • Arayne, Muhammad Saeed (Department of Chemistry, University of Karachi) ;
  • Rizvi, Syeda Bushra Shakeb (Department of Pharmaceutical Chemistry, Faculty of Pharmacy Federal Urdu University of Arts, Science and Technology) ;
  • Haroon, Urooj (Department of Chemistry, Federal Urdu University of Arts, Science and Technology)
  • Received : 2010.06.23
  • Accepted : 2010.11.30
  • Published : 2011.02.20

Abstract

Present work comprises of synthesis various analogues of ciprofloxacin by introducing new functionality at carboxylic group position via ester aminolysis reaction. For this purpose the carboxylic group at C-3 was esterified and later subjected to nucleophilic attack at the carbonyl carbon by various aromatic amines. Structure of the analogues was confirmed by different techniques i.e. IR, $^1H$ NMR and mass spectrometry. The antibacterial activity of the derivatives was also assessed with the parent against a series of Gram-positive and Gram-negative bacteria. The synthesized compounds showed diverse antimicrobial profile among which most compounds possessed a comparable or better activity in comparison to the ciprofloxacin. Additionally unlike ciprofloxacin, some of the derivatives were also found to show antifungal activity.

Keywords

References

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