Medicinal Chemistry Research

, Volume 26, Issue 6, pp 1139–1148 | Cite as

Design, characterization, in vitro antibacterial, antitubercular evaluation and structure–activity relationships of new hydrazinyl thiazolyl coumarin derivatives

  • Samina KhanYusufzai
  • Hasnah OsmanEmail author
  • Mohammad Shaheen Khan
  • Suriyati Mohamad
  • Othman Sulaiman
  • Thaigarajan Parumasivam
  • Jualang Azlan Gansau
  • Norhaniza Johansah
  • Noviany
Original Research


Herein, we describe the synthesis of 11new thiazolyl coumarin derivatives and evaluation of their potential role as antibacterial and antituberculosis agents. The structures of the synthesized compounds were established by extensive spectroscopic studies (Fourier transform infrared spectroscopy, 1H-nuclear magnetic resonance, 13C-nuclear magnetic resonance, 2D-nuclear magnetic resonance and liquid chromatography–mass spectrometry) and elemental analysis. All synthesized compounds were assayed for their in vitro antibacterial activity against a few gram positive and gram negative bacteria and antituberculosis activity against Mycobacterium tuberculosis H37Rv ATCC 25618 by using colorimetric microdilution assay method. Nine derivatives showed moderate anti-bacterial and anti-tuberculosis activities against all the tested strains. The highest activity against all the pathogens including Mycobacterium tuberculosis was observed by compound 7c with MIC values ranging between 31.25–62.5 μg/mL, indicating that coumarin skeleton could indeed provide useful scaffold for the development of new anti-microbial drugs.


Anti-bacterial activity 3-Bromoacetyl coumarin Mycobacterium tuberculosis Thiazolyl coumarin Structure-activity relationships 



The authors thank the School of Chemical Sciences, Universiti Sains Malaysia (USM) for providing necessary research facilities. The authors are also thankful to the School of Biological Sciences, USM and Faculty of Science and Natural Resources, University Malaysia Sabah for providing facilities for biological studies. Thanks are due to Malaysian Government and USM for the grant FRGS 203/PKIMIA/6711462 to conduct this work. Samina Khan Yusufzai thanks Graduate Assistance fellowship for financial support.

Compliance with ethical standards

Conflict of interest

The authors declare no competing interest.

Supplementary material

44_2017_1820_MOESM1_ESM.pdf (2.9 mb)
Supplementary Information


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Copyright information

© Springer Science+Business Media New York 2017

Authors and Affiliations

  • Samina KhanYusufzai
    • 1
  • Hasnah Osman
    • 1
    Email author
  • Mohammad Shaheen Khan
    • 2
  • Suriyati Mohamad
    • 3
  • Othman Sulaiman
    • 4
  • Thaigarajan Parumasivam
    • 5
  • Jualang Azlan Gansau
    • 6
  • Norhaniza Johansah
    • 6
  • Noviany
    • 7
  1. 1.School of Chemical SciencesUniversiti Sains MalaysiaMindenMalaysia
  2. 2.Industrial Chemistry Programme, Faculty of Science and Natural ResourcesUniversiti Malaysia SabahSabahMalaysia
  3. 3.School of Biological SciencesUniversiti Sains MalaysiaMindenMalaysia
  4. 4.Bioresource, Paper and Coatings Technology Division, School of Industrial TechnologyUniversiti Sains MalaysiaMindenMalaysia
  5. 5.School of Pharmaceutical SciencesUniversiti Sains MalaysiaMindenMalaysia
  6. 6.Biotechnology Program, Faculty of Science and Natural ResourcesUniversiti Malaysia SabahSabahMalaysia
  7. 7.Department of ChemistryUniversitas LampungLampungIndonesia

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