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Abstract

Antioxidant and Antimicrobial Activity of Some 2-Phenyl-1H-indoles and Benzimidazoles

Author(s): G. Arora, S. Sharma1*, T. Sahni and P. Sharma1
Department of Chemistry, Punjab Agricultural University, Ludhiana-141 004, 1Department of Plant Breeding and Genetics, Punjab Agricultural University, Ludhiana-141 004, India

Correspondence Address:
Department of Chemistry, Punjab Agricultural University, Ludhiana-141 004, India, E-mail: sunita_sharma@pau.edu


Heterocyclic compounds are known to exhibit a variety of biological activities because of their resemblance to a number of naturally occurring metabolites. Various 2-phenyl-1H-indoles and benzimidazole derivatives have been tested for total antioxidant capacity by phosphomolybednum reduction method and 2,2-diphenyl-1-picrylhydrazide free radical scavenging activity. The compounds with electron donating substituents were found to be better antioxidants with IIIa to be most effective. The best radical scavenger was IVb. Antimicrobial activity was screened in vitro against Pseudomonas sp., Enterobacter sp. (Gram-negative) and Bacillus sp. (Gram-positive). It was found that Gram-negative bacteria were more susceptible than Gram-positive bacteria. Indoles exhibited better antibacterial activity compared to benzimidazoles.

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