title: Palladium(II) complexes with R(2)edda derived ligands. Part IV. O,O'-dialkyl esters of (S,S)-ethylenediamine-N,N'-di-2-(4-methyl)-pentanoic acid dihydrochloride and their palladium(II) complexes: synthesis, characterization and in vitro antitumoral activity against chronic lymphocytic leukemia (CLL) cells.
abstract: Four novel bidentate N,N'-ligand precursors, including O,O'-dialkyl esters (alkyl = ethyl, n-propyl, n-butyl and n-pentyl), L1 x 2 HCl-L4 x 2 HCl, of (S,S)-ethylenediamine-N,N'-di-2-(4-methyl)-pentanoic acid dihydrochloride [(S,S)-H(4)eddl]Cl(2) and the corresponding palladium(II) complexes 1-4, were prepared and characterized by IR, (1)H NMR and (13)C NMR spectroscopy and elemental analysis. In vitro cytotoxicity of all compounds was determined against chronic lymphocytic leukemia cells (CLL). The compounds were found to exhibit higher antitumoral activity than cisplatin. The most active compound 2, [PdCl(2){(S,S)-nPr(2)eddl}], was found to be 13.6 times more active than cisplatin on CLL cells.
authors.affiliation: Department of Chemistry, Faculty of Science, University of Kragujevac, R. Domanovića 12, 34000 Kragujevac, Serbia.
authors.forename: Jelena M
authors.initials: JM
authors.lastname: Vujić
authors.forename: Milica
authors.initials: M
authors.lastname: Cvijović
authors.forename: Goran N
authors.initials: GN
authors.lastname: Kaluderović
authors.forename: Marija
authors.initials: M
authors.lastname: Milovanović
authors.forename: Bojana B
authors.initials: BB
authors.lastname: Zmejkovski
authors.forename: Vladislav
authors.initials: V
authors.lastname: Volarević
authors.forename: Nebojsa
authors.initials: N
authors.lastname: Arsenijević
authors.forename: Tibor J
authors.initials: TJ
authors.lastname: Sabo
authors.forename: Srećko R
authors.initials: SR
authors.lastname: Trifunović
mesh_terms: D000970:Antineoplastic Agents / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology; D045744:Cell Line, Tumor; D004492:Edetic Acid / Q000031:analogs & derivatives* / Q000737:chemistry; D004952:Esters; D005029:Ethylenediamines / Q000737:chemistry*; D006801:Humans; D020128:Inhibitory Concentration 50; D007930:Leucine / Q000031:analogs & derivatives* / Q000737:chemistry; D015451:Leukemia, Lymphocytic, Chronic, B-Cell / Q000473:pathology*; D008024:Ligands; D009942:Organometallic Compounds / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology*; D010165:Palladium / Q000737:chemistry*; D013057:Spectrum Analysis
chemical_list: D000970:Antineoplastic Agents; D004952:Esters; D005029:Ethylenediamines; D008024:Ligands; D009942:Organometallic Compounds; C026058:EDDA; D010165:Palladium; D004492:Edetic Acid; D007930:Leucine