title: Novel platinum(II) and palladium(II) complexes with cyclin-dependent kinase inhibitors: synthesis, characterization and antitumour activity.
abstract: The Pt(II) and Pd(II) complexes of the types cis-[Pt(L(1))(2)Cl(2)].H(2)O (1), cis-[Pt(L(2))(2)Cl(2)].3H(2)O (2), trans-[Pd(L(1))(2)Cl(2)].H(2)O (3), trans-[Pd(L(2))(2)Cl(2)].H(2)O (4), trans-[Pd(L(3))(2)Cl(2)].2DMF (5) and trans-[Pd(L(4))(2)Cl(2)].2DMF (6) (L(1)-L(4)=cyclin-dependent kinase inhibitors derived from 6-benzylamino-9-isopropylpurine) have been prepared and characterized. The complexes have been studied by elemental analyses, conductivity measurements, ES+ MS, FT-IR, (1)H, (13)C and (195)Pt NMR spectra, differential scanning calorimetry and thermogravimetric analysis. The molecular structures of L(1), trans-[Pd(L(3))(2)Cl(2)].2DMF (5) and trans-[Pd(L(4))(2)Cl(2)].2DMF (6) have been determined by single crystal X-ray analysis. The complexes have been tested in vitro due to their presumable anticancer activity against the following human cancer cell lines: K-562, MCF7, G-361 and HOS. Satisfying results were obtained for the complex 1 with IC(50) values of 6 microM acquired against G-361 as well as against HOS cell lines. The lowest values of IC(50) were achieved for the complexes 3 and 4 against MCF 7 cell line with IC(50) 3 microM(for 3) and also 3 microM (for 4).
authors.affiliation: Department of Inorganic Chemistry, Palacký University, Krízkovského 10, CZ-771 47 Olomouc, Czech Republic.
authors.forename: Lucie
authors.initials: L
authors.lastname: Szucová
authors.forename: Zdenek
authors.initials: Z
authors.lastname: Trávnícek
authors.forename: Marek
authors.initials: M
authors.lastname: Zatloukal
authors.forename: Igor
authors.initials: I
authors.lastname: Popa
mesh_terms: D000970:Antineoplastic Agents / Q000737:chemistry* / Q000494:pharmacology*; D002152:Calorimetry, Differential Scanning; D018360:Crystallography, X-Ray; D018844:Cyclin-Dependent Kinases / Q000037:antagonists & inhibitors*; D004791:Enzyme Inhibitors / Q000737:chemistry* / Q000494:pharmacology; D009682:Magnetic Resonance Spectroscopy; D008958:Models, Molecular; D010165:Palladium / Q000737:chemistry* / Q000494:pharmacology; D017671:Platinum Compounds / Q000138:chemical synthesis / Q000737:chemistry* / Q000494:pharmacology; D021241:Spectrometry, Mass, Electrospray Ionization; D013055:Spectrophotometry, Infrared
chemical_list: D000970:Antineoplastic Agents; D004791:Enzyme Inhibitors; D017671:Platinum Compounds; D010165:Palladium; D018844:Cyclin-Dependent Kinases