Synthesis of novel quinoline-based thiadiazole, evaluation of their antileishmanial potential and molecular docking studies

Almandil NB 1 , Taha M 2 , Rahim F 3 , Wadood A 4 , Imran S 5 , Alqahtani MA 6 Show all authors , Bamarouf YA 6 , Ibrahim M 1 , Mosaddik A 1 , Gollapalli M 6

Affiliations 

  • 1 Department of Clinical Pharmacy, Institute for Research and Medical Consultations (IRMC), Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31441, Saudi Arabia
  • 2 Department of Clinical Pharmacy, Institute for Research and Medical Consultations (IRMC), Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31441, Saudi Arabia. Electronic address: [email protected]
  • 3 Department of Chemistry, Hazara University, Mansehra 21300, Pakistan
  • 4 Department of Biochemistry, Abdul Wali Khan University Mardan, Mardan 23200, Pakistan
  • 5 Atta-ur-Rahman Institute for Natural Product Discovery, Universiti Teknologi MARA (UiTM), Puncak Alam Campus, 42300 Bandar Puncak Alam, Selangor D.E., Malaysia
  • 6 College of Computer Science & Information Technology (CCSIT), Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31441, Saudi Arabia
Bioorg Chem, 2019 04;85:109-116.
PMID: 30605884 DOI: 10.1016/j.bioorg.2018.12.025

Abstract

New series of quinoline-based thiadiazole analogs (1-20) were synthesized, characterized by EI-MS, 1H NMR and 13C NMR. All synthesized compounds were subjected to their antileishmanial potential. Sixteen analogs 1-10, 12, 13, 16, 17, 18 and 19 with IC50 values in the range of 0.04 ± 0.01 to 5.60 ± 0.21 µM showed tremendously potent inhibition as compared to the standard pentamidine with IC50 value 7.02 ± 0.09 µM. Analogs 11, 14, 15 and 20 with IC50 8.20 ± 0.35, 9.20 ± 0.40, 7.20 ± 0.20 and 9.60 ± 0.40 µM respectively showed good inhibition when compared with the standard. Structure-activity relationships have been also established for all compounds. Molecular docking studies were performed to determine the binding interaction of the compounds with the active site target.

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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