Synthesis, characterization, biological evaluation and molecular docking studies of 2-(1H-benzo[d]imidazol-2-ylthio)-N-(substituted 4-oxothiazolidin-3-yl) acetamides

Snehlata Yadav, Balasubramanian Narasimhan, Siong M. Lim, Kalavathy Ramasamy, Mani Vasudevan, Syed Adnan Ali Shah, Manikandan Selvaraj

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Abstract

Background: A series of 2-(1H-benzo[d]imidazol-2-ylthio)-N-(substituted 4-oxothiazolidin-3-yl) acetamides was synthesized and characterized by physicochemical and spectral means. The synthesized compounds were evaluated for their in vitro antimicrobial activity against Staphylococcus aureus, Bacillus subtilis, Escherichia coli, Candida albicans and Aspergillus niger by tube dilution method. The in vitro cytotoxicity study of the compounds was carried out against human colorectal (HCT116) cell line. The most promising anticancer derivatives (5l, 5k, 5i and 5p) were further docked to study their binding efficacy to the active site of the cyclin-dependent kinase-8. Results: All the compounds possessed significant antimicrobial activity with MIC in the range of 0.007 and 0.061 μM/ml. The cytotoxicity study revealed that almost all the derivatives were potent in inhibiting the growth of HCT116 cell line in comparison to the standard drug 5-fluorouracil. Compounds 5l and 5k (IC50 = 0.00005 and 0.00012 μM/ml, respectively) were highly cytotoxic towards HCT116 cell line in comparison to 5-fluorouracil (IC50 = 0.00615 μM/ml) taken as standard drug. Conclusion: The molecular docking studies of potent anticancer compounds 5l, 5k, 5i and 5p showed their putative binding mode and significant interactions with cyclin-dependent kinase-8 as prospective agents for treating colon cancer.

Original languageEnglish
Article number137
Number of pages12
JournalChemistry Central Journal
Volume11
DOIs
Publication statusPublished - 22 Dec 2017
Externally publishedYes

Keywords

  • Antimicrobial activity
  • Benzimidazole derivatives
  • CDK8
  • Cytotoxic
  • Molecular modeling

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