Synthesis, Characterization, and Biological Evaluation of New Schiff Bases and their Derivatives

Abstract

The synthesis and characterization of a few Schiff base derivatives with exceptional biological activity are the main objectives of this study. Schiff bases, formed due to the reaction between carbonyl compounds and primary amines, are very versatile compounds in medicinal chemistry, biotechnology, and other related fields. Schiff bases are ideal candidates for drug design since they have been shown to exhibit a wide range of biological activities, including antiviral, antioxidant, antifungal, anticancer, and antibacterial properties. Derivatives of Schiff bases were synthesized by a set of systematic steps involving condensation reactions of oxime [A] with various other aldehydes, followed by sulfonylation steps. Thin-layer chromatography (TLC), elemental microanalysis, nuclear magnetic resonance (¹HNMR and ¹³CNMR), Fourier transform infrared spectroscopy (FT-IR), and melting point were used to describe the generated compounds. During the study, extremely pure reagents and advanced equipment were employed to ensure precision in results. The result stated that Schiff base derivatives, [A1], [A2], and [A3], prepared by the above procedure were well characterized, thereby confirming the presence of crucial functional groups such as azomethine (-C=N-), sulfonyl (-SO₂-), and N,N-dimethylamino groups. While the absence of specific indications in the spectra supported the assumed chemical changes, the spectrum data verified the compounds' structural integrity. It was discovered that the compounds have significant potential against a variety of biological activities, including antiviral, antioxidant, and antibacterial activity. In conclusion, the synthesis and full characterization of these novel Schiff base derivatives unlock their huge potential in medicinal chemistry and drug design.