Antioxidants are frequently used in several dietary supplements and have been probed for their significant role in the prevention of diseases like cancer or coronary heart disease. Acetyl salicylic acid has grabbed substantial attention due to their ability in impeding oxidative stress. In the present study, nine new salicylic acid derivatives: 5-(2-hydroxyphenyl-5-substituted)-1,3,4-oxadiazole-2(3H)-thiones, N-(2,5-dimethyl-1H-pyrrol-1-yl)-2-hydroxy-5-substituted benzamides, 2-hydroxy-5-substituted-N'-[1-(2-oxo-2substituted-chromen-3-yl)ethylidene] benzohydrazides and Hg (II) complex of N'-[(1Z)-1-(6-bromo-2-oxo-2H-chromen-3-yl) ethylidene]-2-hydroxybenzohydrazide have been synthesized and characterized in the light of advanced spectral techniques. The antioxidant properties of these compounds were investigated using 2,2-diphenyl-1-picrylhydrazyl (DPPH) spectrometric assay and compared with the results of cyclic voltammetry studies. The redox properties shown by the active molecule using cyclic voltammetry correlated well with the biochemical study.
Key words: Salicylic acid, antioxidant, cyclic voltammetry, redox potential
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