Design and anti-tumor evaluation of new platinum (II) and copper(II) complexes of nitrogen compounds containing selenium moieties

Three ligands containing selenium were synthesized by refluxing 3-acetylcoumarin (AC), 3-acetylbenzocoumarin (ABC) and acetobenzylsulfonamide (ABS) with selenosemicarbazide. The synthesized ligands were reacted with two metal salts namely; copper(II) nitrate and potassium teterachloroplatinate(II). The obtained copper and platinium complexes were characterized by different spectroscopic techniques including, H-1 NMR, C-13 NMR, IR, UV-visible, ESR and MS. The biological activity of newly synthesized compounds were evaluated using different testes like in-vitro antimicrobial screening, anticancer, glutathione-S-transferase and Catalase activities. The in-vitro cytotoxicity against human breast cancer cell line (MCF-7), human liver cancer cell line (HepG-2) and human colon cancer cell line (HCT-116) and Human normal melanocytes (HFB 4) was investigated, where some of the tested compounds were equipotent, while the others were more potent compared with 5-flurouracil and cis-platin as reference drugs. The obtanined results showed that the best results were for copper(II) complexes and especially for benzocoumarin ligand. (C) 2020 The Authors. Published by Elsevier B.V. on behalf of King Saud University.