Design, synthesis, characterization and in vitro antimicrobial evaluation of 4,6-diaryl-4,5-dihydro-2-phenyl-2H-indazol-3-ols

Abstract

New 4,6-diaryl-4,5-dihydro-2-phenyl-2H-indazol-3-ols 25-32 were designed, synthesized and in vitro microbially evaluated using clinically isolated bacterial strains viz Staphylococcus aureus, β-Heamolytic streptococcus, Vibreo cholerae, Salmonella typhii, Shigella felxneri and fungal strains viz Aspergillus flavus, Mucor, Rhizopus and Microsporum gypsuem. Results of this study showed that the nature of the substituents on the phenyl rings viz., methyl, methoxy, chloro, nitro as well as the bromo functions at the meta and para positions of the aryl moieties determined the nature and extent of the activity of the fused indazolonol compounds 25-32.

Keywords::

• 6-Carbethoxy-3
• 5-diarylcyclohex-2-enone
• 4,6-Diaryl-4,5-dihydro-2-phenyl-2H-indazol-3-ols
• Phenyl hydrazine hydrochloride
• Antibacterial activity
• Antifungal activity

Acknowledgements

Authors are thankful to NMR Research Centre, Indian Institute of Science, Bangalore for recording spectra. Two of our authors namely J.Thanusu and V. Kanagarajan are highly thankful for Annamalai University authorities for providing financial support in the form of Research Fellowship.

Declaration of interest: The authors report no conflicts of interest. The authors alone are responsible for the content and writing of the paper.

M. Gopalakrishnan, J. Thanusu & V. Kanagarajan

Design, synthesis, characterization and in vitro antimicrobial evaluation of 4,6-diaryl-4, 5-dihydro-2-phenyl-2H-indazol-3-ols

480–486