A new quinoline–thiosemicarbazone derivative, 5,7-dichloro-8-hydroxyquinoline-2-carboxaldehyde-4-phenyl-3-thiosemicarbazone (QPS) and seven complexes of QPS with d-transition metals (Mn, Fe, Co, Ni, Cu, Zn, Cd) were successfully synthesized. Spectrometry methods such as IR, ESI-MS, and 1H NMR were utilized to determine the structure of complexes that almost all complexes form the metal:ligand ratio of 1:1, except for FeQPS, which forms a 1:2 ratio. The center metals bond to QPS through O, Nquinoline and Nthiosemicarbazone. Four tested complexes (MnQPS, CoQPS, NiQPS, CuQPS) show medium inhibition to KB and Hep-G2 cancer cell lines. ZnQPS has the high activity against KB and Hep-G2 (IC50 = 13.51 and 10.28 μg/mL) and a high impact against the LU cancer cell line (IC50 = 2.0 μg/mL). CdQPS complexes showed excellent activity on both KB and Hep-G2 with IC50 very low, IC50 = 3.12 and 3.06 μg/mL, which is much lower than cisplatin.
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Linh, P.T.H., Chi, M.P., Thao, L.P. et al. Synthesis, Structure, and Antiproliferative Activities of Complexes of Some Transition Metals with 5,7-Dichloro-8-Hydroxyquinoline-2-Carboxaldehyde-4-Phenyl-3-Thiosemicarbazone. Pharm Chem J 57, 1593–1598 (2024). https://doi.org/10.1007/s11094-024-03053-w
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DOI: https://doi.org/10.1007/s11094-024-03053-w