Synthesis, antimicrobial and antioxidant activities of 2-oxo-6-phenyl-2-yl-4-(2′-phenyl-5′-substituted 1H-indol-3′-yl)-1,2-dihydro pyridin-3-carbonitriles and their derivatives

2-Oxo-4-(2′-phenyl-5′-substituted 1H-indol-3′-yl)-6-phenylpyridin-3-carbnitriles ( 2a–c ) and its derivatives containing 1,2,4-triazole ( 4a–c ), thiazolo[3,2-b][1,2,4]triazole ( 5a–c ), hydrazide ( 6a–c ), pyrazolones ( 7a–c ) and ( 8a–c ) were synthesized. Structures of all these previously unknown compounds were confirmed by their spectral studies and elemental analysis. The compounds were screened for their antioxidant and antimicrobial activities.