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Egu SA, Ali I, Khan KM, Chigurupati S, Qureshi U, Salar U, Ul-Haq Z, Almahmoud SA, Felemban SG, Ali M, Taha M. Rhodanine-benzamides as potential hits for α-amylase enzyme inhibitors and radical (DPPH and ABTS) scavengers. Mol Divers 2024:10.1007/s11030-024-10813-z. [PMID: 38446373 DOI: 10.1007/s11030-024-10813-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2022] [Accepted: 01/19/2024] [Indexed: 03/07/2024]
Abstract
A series of 3-substituted and 3,5-disubstituted rhodanine-based derivatives were synthesized from 3-aminorhodanine and examined for α-amylase inhibitory, DPPH (1,1-diphenyl-2-picrylhydrazyl) and ABTS (2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) radical scavenging activities in vitro. These derivatives displayed significant α-amylase inhibitory potential with IC50 values of 11.01-56.04 µM in comparison to standard acarbose (IC50 = 9.08 ± 0.07 µM). Especially, compounds 7 (IC50 = 11.01 ± 0.07 µM) and 8 (IC50 = 12.01 ± 0.07 µM) showed highest α-amylase inhibitory activities among the whole series. In addition to α-amylase inhibitory activity, all compounds also demonstrated significant scavenging activities against DPPH and ABTS radicals, with IC50 values ranging from 12.24 to 57.33 and 13.29-59.09 µM, respectively, as compared to the standard ascorbic acid (IC50 = 15.08 ± 0.03 µM for DPPH; IC50 = 16.09 ± 0.17 µM for ABTS). These findings reveal that the nature and position of the substituents on the phenyl ring(s) are crucial for variation in the activities. The structure-activity relationship (SAR) revealed that the compounds bearing an electron-withdrawing group (EWG) at para substitution possessed the highest activity. In kinetic studies, only the km value was changed, with no observed changes in Vmax, indicating a competitive inhibition. Molecular docking studies revealed important interactions between compounds and the α-amylase active pocket. Further advanced research needs to perform on the identified compounds in order to obtain potential antidiabetic agents.
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Affiliation(s)
- Samuel Attah Egu
- Department of Pure and Industrial Chemistry, Kogi State University, Anyigba, Kogi State, Nigeria
- International Center for Chemical and Biological Sciences, H. E. J. Research Institute of Chemistry, University of Karachi, Karachi, 75270, Pakistan
| | - Irfan Ali
- International Center for Chemical and Biological Sciences, H. E. J. Research Institute of Chemistry, University of Karachi, Karachi, 75270, Pakistan
| | - Khalid Mohammed Khan
- International Center for Chemical and Biological Sciences, H. E. J. Research Institute of Chemistry, University of Karachi, Karachi, 75270, Pakistan.
- Department of Clinical Pharmacy, Institute for Research and Medical Consultations [IRMC], Imam Abdulrahman Bin Faisal University, P.O. Box 31441, Dammam, Kingdom of Saudi Arabia.
- Pakistan Academy of Science, 3-Constitution Avenue, G-5/2, Islamabad, 44000, Pakistan.
| | - Sridevi Chigurupati
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, Qassim University, Buraydah, 52571, Kingdom of Saudi Arabia
| | - Urooj Qureshi
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, 75270, Pakistan
| | - Uzma Salar
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, 75270, Pakistan
| | - Zaheer Ul-Haq
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, 75270, Pakistan
| | - Suliman A Almahmoud
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, Qassim University, Buraydah, 52571, Kingdom of Saudi Arabia
| | - Shatha Ghazi Felemban
- Department of Medical Laboratory Science, Fakeeh College for Medical Sciences, Jeddah, 21461, Kingdom of Saudi Arabia
| | - Mohsin Ali
- Department of Chemistry, University of Karachi, Karachi, 75270, Pakistan
| | - Muhammad Taha
- Department of Clinical Pharmacy, Institute for Research and Medical Consultations [IRMC], Imam Abdulrahman Bin Faisal University, P.O. Box 31441, Dammam, Kingdom of Saudi Arabia
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