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Abstract
BackgroundBenzimidazoles and triazoles are useful structures for research and development of new pharmaceutical molecules and have received much attention in the last decade because of their highly potent medicinal activities.FindingsA simple and efficient synthesis of triazole was carried out by treatment of 2-(4-azidophenyl)-1H-benzo[d]imidazole (6) with different types of terminal alkynes in t-BuOH/H2O, sodium ascorbate, and Zn(OTf)2, screened for cytotoxicity assay and achieved good results. A series of new benzimidazole-linked 1,2,3-triazole (8a-i) congeners were synthesized through cyclization of terminal alkynes and azide. These synthesized congeners 8a-i were evaluated for their cytotoxicity against five human cancer cell lines. These benzimidazole-linked 1,2,3-triazole derivatives have shown promising activity with IC50 values ranging from 0.1 to 43 μM. Among them, the compounds (8a, 8b, 8c, and 8e) showed comparable cytotoxicity with adriamycin control drug.ConclusionsIn conclusion, we have developed a simple, convenient, and an efficient convergent approach for the synthesis of benzimidazole-linked 1,2,3-triazole congeners as agents.Graphical Synthesis of 1,2,3-triazole derivativesElectronic supplementary materialThe online version of this article (doi:10.1186/s13588-014-0014-x) contains supplementary material, which is available to authorized users.
Highlights
Benzimidazoles and triazoles are useful structures for research and development of new pharmaceutical molecules and have received much attention in the last decade because of their highly potent medicinal activities
In conclusion, we have developed a simple, convenient, and an efficient convergent approach for the synthesis of benzimidazole-linked 1,2,3-triazole congeners as agents
The benzimidazole nucleus is an important pharmacophore in medicinal chemistry
Summary
Benzimidazoles and triazoles are useful structures for research and development of new pharmaceutical molecules and have received much attention in the last decade because of their highly potent medicinal activities. Many researchers have been attracted to benzimidazole derivatives because of their wide range of biological activity. Pyrrolo[1,2-a]benzimidazoles represent a new class of antitumour agent exhibiting cytotoxic activity against a variety of cancer cell lines [10].
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