Synthesis, bioactivity, and molecular docking of benzimidazole-2-carbamate derivatives as potent α-glucosidase inhibitors

Ebrahim Saeedian Moghadam, Abdullah Mohammed Al-Sadi, Thuraya Al-Harthy, Mohammad Ali Faramarzi, Musa Shongwe, Mohsen Amini*, Raid Abdel-Jalil

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


Since time immemorial, diabetes has claimed countless lives throughout the world, and hundreds of millions of people across the globe endure this chronic metabolic disorder with perpetual health complications. Hence, specialists in medicinal and bioorganic chemistry are continually invigorated to design and synthesize α-glucosidase inhibitors that could potentially act as antidiabetic agents. To this end, in this work we have produced a series of variously substituted piperazin-1-yl benzimidazole-2-carbamates (7a–f) from multistep reactions in experimental yields ranging from moderate to relatively high. Subsequent to chemical identification with HRMS and spectroscopic elucidation using NMR and vibrational spectroscopic techniques, 15 derivatives were investigated for potential α-glucosidase inhibitory behavior. All, but 7a-1, exhibited higher inhibition (IC50: 118–742 μM) than acarbose (IC50: 759 μM), the standard α-glucosidase inhibitor. The most effective inhibitors in this series were 7d-1 and 7f-2 with IC50 values of 118 and 155 μM, respectively. Kinetic studies demonstrated that 7d-1 is a competitive inhibitor of α-glucosidase. Molecular docking was employed to provide insight into the interactions of these bioactive organic molecules with the amino acid residues at the active site of the foregoing enzyme.

Original languageEnglish
Article number134931
JournalJournal of Molecular Structure
Publication statusPublished - Apr 15 2023
Externally publishedYes


  • Benzimidazole
  • Carbamate
  • Heterocycles
  • Synthesis
  • α-Glucosidase inhibitors

ASJC Scopus subject areas

  • Analytical Chemistry
  • Spectroscopy
  • Organic Chemistry
  • Inorganic Chemistry

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