Synthesis, Spectroscopic Characterizations, Antimicrobial, Anticancer & Anitoxidant Activities, Molecular Docking and DFT Calculations of Noval Zinc (II) Complex of 2- (Benzoylamino)-3-Sulfanylpropanoic Acid

The complex with zinc (II) of Ligand (2- (benzoylamino)-3-sulfanylpropanoic) acid was made and analyzed using FT-IR, UV-visible, mass spectrometry, 1H NMR, 13C NMR, SEM and powder XRD. DFT calculations were also used to detect the electronic properties & structural stability. The antimicrobial investigation demonstrated that the zinc (II) complex had better bacterial killing action against E. coli (MIC: zinc (II) complex > Ciprofloxacin > Ligand) and antifungal action against A. niger (MIC: zinc (II) complex > Ligand > Amphotericin B). And the Zn (II) complex was more antioxidant active than the free ligand in the DPPH assay, as evidenced by its lower IC 50 (~420 0). Molecular docking experiments have indicated a better binding affinity of the zinc (II) complex with major antioxidant, antimicrobial, and enzyme inhibitory proteins compared to the free ligand. The anticancer effect of the Zn (II) complex on MCF-7 cells was demonstrated to be stronger than that of the free ligand in the MTT assay, revealing that the Zn (II) complex is suitable for further development as a drug. Docking of 3D ribbon structures was used to confirm these interactions. The improved stability and electronic features of the complex, due to zinc coordination, explain the increase in its activity.