title: Synthesis and biological evaluation of benzimidazole-linked 1,2,3-triazole congeners as agents.
abstract: BACKGROUND
  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.
  
  
  RESULTS
  A 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.
  
  
  CONCLUSIONS
  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. Graphical Abstract Synthesis of 1,2,3-triazole derivatives.
authors.affiliation: Department of Physics and Chemistry, Mahatma Gandhi Institute of Technology, Chaitanya Bharathi, Gandipet, Hyderabad, 500075, India. harkala123@gmail.com.
authors.forename: Karna Ji
authors.initials: KJ
authors.lastname: Harkala
authors.affiliation: Department of Physics and Chemistry, Mahatma Gandhi Institute of Technology, Chaitanya Bharathi, Gandipet, Hyderabad, 500075, India. elxnkits@yahoo.co.in.
authors.forename: Laxminarayana
authors.initials: L
authors.lastname: Eppakayala
authors.affiliation: Department of Chemistry, College of Engineering, Jawaharlal Nehru Technological University, Hyderabad, Nachupally, Karimnagar, 505501, India. mtcharya@yahoo.com.
authors.forename: Thirumala Chary
authors.initials: TC
authors.lastname: Maringanti
keywords: Benzimidazole; Clic reaction; Cytotoxicity