Design, synthesis, sar study, antimicrobial and anticancer evaluation of novel 2-mercaptobenzimidazole azomethine derivatives

• Published in: Mini-Reviews in Medicinal Chemistry
• Main Author: Tahlan S.; Narasimhan B.; Lim S.M.; Ramasamy K.; Mani V.; Shah S.A.A.
• Format: Article
• Language: English
• Published: Bentham Science Publishers 2020
• Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85090610037&doi=10.2174%2f1389557518666180903151849&partnerID=40&md5=5edc8a8c8534bc2ce395688f9fd8b0ce

Background: Various analogues of benzimidazole are found to be biologically and thera-peutically potent against several ailments. Benzimidazole when attached with heterocyclic rings has shown wide range of potential activities. So, from the above provided facts, we altered benzimidazole derivatives so that more potent antagonists could be developed. In the search for a new category of an-timicrobial and anticancer agents, novel azomethine of 2-mercaptobenzimidazole derived from 3-(2-(1H-benzo[d]imidazol-2-ylthio)acetamido)benzohydrazide were synthesized. Results and Discussion: The synthesized analogues were characterized by FT-IR,1H/13C-NMR and MS studies as well C, H, N analysis. All synthesized compounds were evaluated for in vitro antibacterial activity against Gram-positive (B. subtilis), Gram-negative (E. coli, P. aeruginosa, K. pneumoniae and S. typhi) strains and in vitro antifungal activity against C. albicans and A. niger strains by serial dilution method, the minimum inhibitory concentration (MIC) described in µM/ml. The in vitro anticancer activity of synthesized compounds was determined against human colorectal carcinoma cell line (HCT-116) using 5-fluorouracil as standard drug. Conclusion: In general, most of the synthesized derivatives exhibited significant antimicrobial and anticancer activities. Compounds 8, 10, 15, 16, 17, 20 and 22 showed significant antimicrobial activity towards tested bacterial and fungal strains and compound 26 exhibited significant anticancer activity. © 2020 Bentham Science Publishers.