Synthesis, vibrational analysis, absorption and emission spectral studies, topology and molecular docking studies on sulfadiazine derivative

Abstract

A new class of (N‐(pyrimidin‐2‐yl)‐4‐((1,7,7‐trimethylbicyclo [2.2.1] heptan‐2‐ylidene) amino) benzenesulfonamide (CDA) was synthesized from commercially available camphor and sulfadiazine. The synthesized Schiff‐base was characterized by FT‐IR, 1H and 13C NMR spectroscopic analyses. The HOMO, LUMO, MEP, chemical reactivity parameters, and NBO were calculated using the WB97XD/cc‐pVDZ basis set. For better understanding, the electronic absorption and emission of the compound were recorded using UV‐Vis and fluorescence spectra. Molecular docking simulations were investigated between ligand (compound) and target protein. The computational results correlate well with observed values. The frontier molecular orbital energy gap (3.78 eV) revealed that the studied molecule has higher polarizability and chemical reactivity with lower kinetic stability. In addition, compound showed the highest binding score −5.72 kcal/mol, which was confirmed by a molecular docking simulation.