Abstract
3,5-Dimethyl-5-(4-pyridyl)hydantoin (L) and its platinum(II) and platinum(IV) complexes with the general formula cis-[PtL(2) X(2) ] · n H(2) O and [PtL(2) Cl(4) ], where XCl, I and n = 2-4 were synthesized. A new Pt(IV) complex with 5-methyl-5-(4-pyridyl)hydantoin (L') with the formula cis-[Pt(L')(2) Cl(2) (OH)(2) ] · 5 H(2) O was also synthesized. The novel compounds were characterized by elemental analysis, IR, (1) H-, (13) C-, (195) Pt-NMR spectra and molar conductivity. The cytotoxic effects of these complexes were examined on three human tumor cell lines by MTT-dye reduction assay. These four new Pt(II) and Pt(IV) complexes and a set of another twelve Pt(II), Pt(IV), and Pd(II) complexes previously synthesized and tested were compiled and a QSAR model was derived in order to direct the further rational synthesis.
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