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J App Pharm Sci. 2017; 7(6): 206-214

Synthesis, antitumor evaluation and molecular modeling study of novel benzimidazoles and pyrazinobenzimidazoles

Ahmed A. B. Mohamed, Farid A. Badria, Azza R. Maarouf, Naglaa I. Abdel-Aziza, Fardous ElSenduny, Alaa A.M. Abdel-Aziz, Said M. Bayomi.


A group of novel benzimidazole and pyrazinobenzimidazole derivatives 5-8 was designed for evaluation of their in vitro cytotoxicity studies using MTT-based assay against three cancer cell lines, such as human hepatoma cell line (HepG2), human breast cancer cell line (MCF-7) and kidney of African green monkey (Vero B). Compounds 5a and 5c-e exhibit the highest and broad spectrum activities against all of the three cell lines tested when compared with reference drug 5-Fluorouracil (5-FU). 1-(1H-Benzimidazol-2-yl)-3-phenylprop-2-en-1-one 5a showed superior and great potency and lethal effect over HepG2, MCF-7 and Vero B cell lines with IC50 values of 2, 1.8 and 3.5g/ml, respectively, comparable to 5-FU (IC50 values of 62, 12 and 13g/ml, respectively). Moreover, compound 7b showed potent activity against MCF-7 and Vero B cell lines with IC50 values of 2 and 2.5g/ml, respectively. Docking study of compounds 5a and 7b into the ATP binding site of epidermal growth factor receptor (EGFR) revealed comparable binding manner to an EGFR inhibitor, Erlotinib.

Key words: Prop-2-en-1-one. Benzimidazoles. Synthesis. Antitumor effect. Molecular modeling

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