Stereospecific ligands and their complexes. Part VII. Synthesis, characterization and in vitro antitumoral activity of platinum(II) complexes with O,O'-dialkyl esters of (S,S)-ethylenediamine-N,N'-di-2-(4-methyl)pentanoic acid.

Abstract:

:Platinum(II) complexes (1-4) with bidentate N,N'-ligands, O,O'-dialkyl esters (alkyl = ethyl, n-propyl, n-butyl and n-pentyl), of (S,S)-ethylenediamine-N,N'-di-2-(4-methyl)pentanoic acid were synthesized and characterized by IR, (1)H NMR and (13)C NMR spectroscopy and elemental analysis. DFT calculations were performed for the complexes and it was found that only one diastereoisomer could be formed. Cytotoxic activity of complexes 1-4 was determined against chronic lymphocytic leukemia cells (CLL) and compared to the activity of ligand precursors L1 · 2HCl-L4·2HCl and corresponding palladium(II) complexes, [PdCl(2)L] (L = L1-L4). The complexes were found to exhibit significantly higher antitumor activities than cisplatin on CLL cells. Cytotoxic effect of platinum(II) complexes on CLL cells was higher compared to corresponding palladium(II) complexes. In addition the mode of cell death induced by platinum(II) complexes was determined.

journal_name

Eur J Med Chem

authors

Vujić JM,Kaluđerović GN,Milovanović M,Zmejkovski BB,Volarević V,Živić D,Đurđeviće P,Arsenijević N,Trifunović SR

doi

10.1016/j.ejmech.2011.07.034

subject

Has Abstract

pub_date

2011-09-01 00:00:00

pages

4559-65

issue

9

eissn

0223-5234

issn

1768-3254

pii

S0223-5234(11)00547-2

journal_volume

46

pub_type

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