Abstract
The synthetic protocol of our targeted thiadiazole-triazole analogs hybridized with thiophene is based on heterocyclization key compound 5-(2-chloroacetamido)-2-phenyl-N-(1,3,4-thiadiazol-2-yl)-2H-1,2,3-triazole-4-carboxamide (1) in the presence of different thiocarbamoyl reagents 2, 5, and/or 8. The HOMO-LUMO energies and Fukui's indices were established by applying the DFT/B3LYP molecular modeling methodology. The examined compounds exhibited a low and close HOMO-LUMO energy gap of 1.64-1.99 eV, where the derivatives 7 and 4 presented the lowest and highest values, respectively. The antioxidant properties of the prepared thiadiazole-triazole-thiophene hybrids were investigated using the DPPH radical scavenging technique, where hybrids 4 and 6 showed the strongest inhibition, whereas analog 10 showed only moderate inhibition. Over the course of two common reference drugs, vitamin C and BHT, all of the radical scavenging for thiadiazole-triazole hybrids was examined. Additionally, the generated thiadiazole-triazole-thiophene hybrids' molecular docking was evaluated through the PDB code 3MNG. Hybrid 6 had the highest recorded binding score when compared to the other hybrids. The docking repercussions were appropriate and addressed with the antioxidant assessment.