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Synthesis and Evaluation of 6-Ethoxy-2-Mercaptobenzothiazole Scaffolds As Potential Α-Glucosidase Inhibitors Publisher



Mojibade Balogun M1, 2 ; Shamim S1 ; Mohammed Khan K1, 3 ; Mahdavi M4 ; Salar U5 ; Adebayo Oladosu I2 ; Mohammadikhanaposhtani M6 ; Ali Faramarzi M7 ; Olufunke Moronkola D2 ; Taha M3 ; Rahim F8 ; Perveen S9
Authors
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Authors Affiliations
  1. 1. H. E. J. Research Institute of Chemistry, International Centre for Chemical and Biological Sciences, University of Karachi, Karachi, 75270, Pakistan
  2. 2. Department of Chemistry, University of Ibadan, Ibadan, Nigeria
  3. 3. Department of Clinical Pharmacy, Institute for Research and Medical Consultations (IRMC), Imam Abdulrahman Bin Faisal University, P.O. Box 31441, Dammam, Saudi Arabia
  4. 4. Endocrinology & Metabolism Research Institute, Tehran University of Medical Sciences, Tehran, Iran
  5. 5. Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, 75270, Pakistan
  6. 6. Cellular and Molecular Biology Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, Iran
  7. 7. Department of Pharmaceutical Biotechnology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
  8. 8. Department of Chemistry, Hazara University, Khyber Pakhtunkhwa, Mansehra, 21300, Pakistan
  9. 9. PCSIR Laboratories Complex, Karachi, Shahrah-e-Dr. Salimuzzaman Siddiqui, Karachi, 75280, Pakistan

Source: ChemistrySelect Published:2022


Abstract

6-Ethoxy-2-mercapto benzothiazole derivatives 1–26 were synthesized by following two different reaction schemes. Products 1–18 were synthesized by treating 6-ethoxy-2-mercaptobenzothiazole with different phenacyl bromides whereas compounds 19–26 were prepared by the reaction of 6-ethoxy-2-mercaptobenzothiazole with benzyl bromide derivatives under basic conditions. Structural characterization of compounds was performed by mass spectrometric and NMR spectroscopic techniques. Spectroscopic data was well supported to confirm the structures of each analog. All synthetic compounds were subjected to check their potential to inhibit the α-glucosidase enzyme. All scaffolds demonstrated potent inhibitory activity (IC50=60.1±3.6–319.7±7.5 μM) than standard acarbose (IC50=750.0±10.5 μM). Compounds 18 (IC50=60.1±3.6 μM) and 26 (IC50=77.0±4.4 μM) having another electron-rich heterocyclic ring system were identified as the two top-most potent compounds of the series. Kinetic studies ascertained the competitive type inhibition by the most potent analogs. Detailed binding interactions analyses with docking simulations were also carried out which revealed a distinct binding pattern of ligands (synthetic molecules) with the enzyme's active site. © 2022 Wiley-VCH GmbH.