Pharmaceutical Chemistry Journal

, Volume 50, Issue 3, pp 172–180 | Cite as

Novel Armed Pyrazolobenzothiazine Derivatives: Synthesis, X-Ray Crystal Structure and POM analyses of Biological Activity Against Drug Resistant Clinical Isolate of Staphylococcus aureus

  • Zara Sajid
  • Matloob Ahmad
  • Sana Aslam
  • Usman Ali Ashfaq
  • Ameer Fawad Zahoor
  • Furqan Ahmad Saddique
  • Masood Parvez
  • Abdul Hameed
  • Sadia Sultan
  • Hsaine Zgou
  • Taibi Ben Hadda
Article

Novel structural hybrids of pyrazolobenzothiazine and triazole ring systems have been prepared to observe a synergistic effect of the two ring systems. The methodology involves condensation of pyrazolobenzothiazine rings with methyl chloroacetate, followed by hydrazide formation. The hydrazides were converted to triazoles through the formation of intermediate potassium salts of dithiocarbazate. The final compounds as well as intermediates were screened for their antibacterial activity against a multidrug resistant strain of Staphylococcus aureus. It was interesting to observe that dithiocarbazates (7a, 7b) and target triazoles (8a, 8b) exhibited antibacterial activity.

Keywords

pyrazolobenzothiazine dioxides triazole antibacterial pharmacophore site Petra/Osiris/Molinspiration (POM) analyses 

Notes

Acknowledgements

One of the authors (M. Ahmad) highly acknowledges “Higher Education Commission of Pakistan” for providing “Startup research grant” No. PM-IPFP/HRD/HEC/2011/382. Professor T. Ben Hadda would like to thank ACTELION, the Biopharmaceutical Company of Swiss, for the calculations of molecular properties.

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Copyright information

© Springer Science+Business Media New York 2016

Authors and Affiliations

  • Zara Sajid
    • 1
  • Matloob Ahmad
    • 1
  • Sana Aslam
    • 2
  • Usman Ali Ashfaq
    • 3
  • Ameer Fawad Zahoor
    • 1
  • Furqan Ahmad Saddique
    • 1
  • Masood Parvez
    • 4
  • Abdul Hameed
    • 5
  • Sadia Sultan
    • 6
  • Hsaine Zgou
    • 7
  • Taibi Ben Hadda
    • 8
  1. 1.Department of ChemistryGovernment College UniversityFaisalabadPakistan
  2. 2.Department of ChemistryGovernment College Women UniversityFaisalabadPakistan
  3. 3.Department of Bioinformatics and BiotechnologyGovernment College UniversityFaisalabadPakistan
  4. 4.Department of ChemistryUniversity of CalgaryAlbertaCanada
  5. 5.HEJ Research Institute of Chemistry, International Center for Chemical and Biological SciencesUniversity of KarachiKarachiPakistan
  6. 6.Faculty of Pharmacy, Atta-ur-Rahman Institute for Natural Products Discovery (AuRIns)Universiti Teknologi MARABandar Puncak AlamMalaysia
  7. 7.Ibn Zohr University, Polydisciplinary FacultyOuarzazateMorocco
  8. 8.Laboratoire Chimie Matériaux, FSOUniversité Mohammed PremierOujdaMorocco

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