Synthesis, Antioxidant, and Anti-tyrosinase Activity of Some Aromatic Oximes: An Experimental and Theoretical Study

In this study,five oximes were synthesized,characterized,and their antioxidant activity investigatedexperimentally,theoretically. Labeled OX1–OX5,our oximes were subjected to three antioxidantactivity assays (1,1-diphenyl-2-picrylhydrazyl,cupric reducing antioxidant capacity test [CUPRAC],and ferric reducing antioxidant power test). The related results were very fulfilling presenting certainantioxidant properties for the majority of the studied compounds,especially with CUPRAC test whereOX1,OX2 presented a better result than the used standard antioxidants. Besides,the thermodynamicmolecular descriptors (bond dissociation enthalpy,ionization potential,and proton affinity) of ourmolecules were calculated with the density functional theory to elucidate the experimental results. Theresulting values were in a good agreement with the experimental results. The second part of this workconsisted of an anti-tyrosinase activity evaluation of the five oximes where three of them displayed aninhibitory effect against this enzyme. To analyze this result,a molecular docking was conducted andthe obtained values were in accordance with the experience. Absorption,distribution,metabolism,andexcretion properties were also assessed via Molinspiration software,all our molecules satisfied therelated conditions. Thus,the conducted theoretical,experimental studies were in excellent harmony,together supporting the antioxidant power of our compounds,which could permit their use in cosmetic,pharmaceutical,or food industry domains,after further clinical tests.