Novel benzimidazole derivatives; synthesis, bioactivity and molecular docking study as potent urease inhibitors

Ebrahim Saeedian Moghadam, Abdullah Mohammed Al-Sadi, Meysam Talebi, Massoud Amanlou, Mohsen Amini, Raid Abdel-Jalil

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


BACKGROUND: Benzimidazole derivatives are widely used to design and synthesize novel bioactive compounds. There are several approved benzimidazole-based drugs on the market.

OBJECTIVES: In this study, we aimed to design and synthesize a series of novel benzimidazole derivatives 8a-n that are urease inhibitors.

METHODS: All 8a-n were synthesized in a multistep. To determine the urease inhibitory effect of 8a-n, the urease inhibition kit was used. The cytotoxicity assay of 8a-n was determined using MTT method. Molecular modelling was determined using autodock software.

RESULTS: All 8a-n were synthesized in high yield, and their structures were determined using 1H-NMR, 13C-NMR, MS, and elemental analyses. In compared to thiourea and hydroxyurea as standards (IC50: 22 and 100 µM, respectively), all 8a-n had stronger urease inhibition activity (IC50: 3.36-10.81 µM). With an IC50 value of 3.36 µM, 8e had the best enzyme inhibitory activity. On two evaluated cell lines, the MTT cytotoxicity experiment revealed that all 8a-n have IC50 values greater than 50 µM. Finally, a docking investigation revealed a plausible way of interaction between the 8e and 8d and the enzyme's active site's key residues.

CONCLUSION: The synthesized benzimidazole derivatives exhibit high activity, suggesting that further research on this family of compounds would be beneficial to finding a potent urease inhibitor.

Original languageEnglish
JournalDARU, Journal of Pharmaceutical Sciences
Early online dateJan 18 2022
Publication statusE-pub ahead of print - Jan 18 2022


  • Benzimidazole
  • Drug design
  • Nitrogen heterocycles
  • Synthesis
  • Urease inhibitors

ASJC Scopus subject areas

  • Pharmacology
  • Drug Discovery


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