Synthesis, Characterization and Evaluation of Potential Antioxidant Free Radical Scavenging Activity of Novel Synthetic Flavonoid

Background: Natural products like flavonoids from the natural or synthetic origin are known to possess anticancer, antioxidant, anti-inflammatory activities. However, there is few/no experimental proof presently available regarding these. In the present study, hydroxy thiophene derivative of flavonoid was synthesized by Claisen-Schmidt reaction using grinding technique and evaluated for antioxidant activity. Objective: The present study was aimed to synthesize, characterize and evaluate the free radical scavenging antioxidant activity by using in-vitro assay methods. Methods: Synthesized compound was characterized on the basis of Fourier-Transform Infrared Spectroscopy (FTIR), proton Nuclear Magnetic Resonance (1H NMR),13 C NMR, Mass Spectroscopy (MS) and elemental analysis. The in vitro scavenging activity was studied on hydroxyl, nitric oxide radicals and superoxide anions. Further in the in vivo studies, the liver homogenate of diabetic mellitus rats induced by low dose streptozotocin fed on a high-fat diet, estimated for lipid peroxidase (TBARS), catalase(CAT), superoxide dismutase(SOD) activity and reduced glutathione (GSH) content by colorimetric assays. Results: The NF compound exhibited the dose-dependent free radical scavenging activity especially at 100mcg to 200mcg/ml concentration but lesser than that of standard drugs. Conclusions: The present study was demonstrated that the novel flavonoid (NF) found to have high antioxidant free radical scavenging activity against various oxidative stress systems which needs to be confirmed by other assays.