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Novel benzimidazole derivatives as effective inhibitors of prolyl oligopeptidase: synthesis, in vitro and in silico analysis

    Abdul Shakoor

    Department of Chemistry, Abdul Wali Khan University, Mardan, 23200, Pakistan

    ,
    Aftab Alam

    Department of Chemistry, University of Malakand, PO Box 18800, Khyber Pakhtunkhwa, Pakistan

    ,
    Faheem Jan

    Shenyang National Laboratory for Materials Science, Institute of Metal Research Chinese Academy of Sciences, Shenyang, Liaoning, 110016, People's Republic of China

    ,
    Momin Khan

    *Author for correspondence:

    E-mail Address: mominkhan@awkum.edu.pk

    Department of Chemistry, Abdul Wali Khan University, Mardan, 23200, Pakistan

    ,
    Mumtaz Ali

    Department of Chemistry, University of Malakand, PO Box 18800, Khyber Pakhtunkhwa, Pakistan

    ,
    Saeed Ullah

    Natural and Medical Sciences Research Center, University of Nizwa, PO Box 33, Nizwa, Oman

    ,
    Ajmal Khan

    Natural and Medical Sciences Research Center, University of Nizwa, PO Box 33, Nizwa, Oman

    ,
    Abdullah F AlAsmari

    Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Riyadh, 11451, Saudi Arabia

    ,
    Fawaz Alasmari

    Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Riyadh, 11451, Saudi Arabia

    ,
    Ahmed Al-Ghafri

    Natural and Medical Sciences Research Center, University of Nizwa, PO Box 33, Nizwa, Oman

    &
    Ahmed Al-Harrasi

    **Author for correspondence:

    E-mail Address: aharrasi@unizwa.edu.om

    Natural and Medical Sciences Research Center, University of Nizwa, PO Box 33, Nizwa, Oman

    Published Online:https://doi.org/10.4155/fmc-2023-0267

    Background: This research aims to discover novel derivatives having potential therapeutic applications in treating conditions related to prolyl oligopeptidase (POP) dysfunction. Method: Novel benzimidazole derivatives have been synthesized, characterized and screened for their in vitro POP inhibition. Results: All these derivatives showed excellent-to-good inhibitory activities in the range of IC50 values of 3.61 ± 0.15 to 43.72 ± 1.18 μM, when compared with standard Z-prolyl-prolinal. The docking analysis revealed the strong interactions between our compounds and the target enzyme, providing critical insights into their binding affinities and potential implications for drug development. Conclusion: The significance of these compounds in targeting POP enzyme offers promising prospects for future research in the field of neuropharmacology.

    Graphical abstract

    Papers of special note have been highlighted as: • of interest

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