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Publikation

Pantelić, N.; Zmejkovski, B. B.; Marković, D. D.; Vujić, J. M.; Stanojković, T. P.; Sabo, T. J.; Kaluđerović, G. N.; Synthesis, Characterization, and Cytotoxicity of a Novel Gold(III) Complex with O,O′-Diethyl Ester of Ethylenediamine-N,N′-Di-2-(4-Methyl)Pentanoic Acid Metals 6, 226, (2016) DOI: 10.3390/met6090226

A novel gold(III) complex, [AuCl2{(S,S)-Et2eddl}]PF6, ((S,S)-Et2eddl = O,O′-diethyl ester of ethylenediamine-N,N′-di-2-(4-methyl)pentanoic acid) was synthesized and characterized by IR, 1D (1H and 13C), and 2D (H,H-COSY and H,H-NOESY) NMR spectroscopy, mass spectrometry, and elemental analysis. Density functional theory calculations confirmed that (R,R)-N,N′ diastereoisomer was energetically the most stable isomer. In vitro antitumor action of ligand precursor [(S,S)-H2Et2eddl]Cl2 and corresponding gold(III) complex was determined against tumor cell lines: human adenocarcinoma (HeLa), human colon carcinoma (LS174), human breast cancer (MCF7), non-small cell lung carcinoma cell line (A549), and non-cancerous cell line human embryonic lung fibroblast (MRC-5) using microculture tetrazolium test (MTT) assay. The results indicate that both ligand precursor and gold(III) complex have showed very good to moderate cytotoxic activity against all tested malignant cell lines. The highest activity was expressed by [AuCl2{(S,S)-Et2eddl}]PF6 against the LS174 cells, with IC50 value of 7.4 ± 1.2 µM.
Publikation

Pantelić, N.; Zmejkovski, B. B.; Stanojković, T. P.; Jeftić, V. V.; Radić, G. P.; Trifunović, S. R.; Kaluđerović, G. N.; Sabo, T. J.; Synthesis and high in vitro cytotoxicity of some (S,S)-ethylenediamine-N,N’-di-2-propanoate dihydrochloride esters J. Serb. Chem. Soc. 79, 649-658, (2014) DOI: 10.2298/JSC130512022P

A novel (S,S)-R2eddip ester, O,O′-diisopentyl-(S,S)-ethylenediamine-N,N′-di-2-propanoate dihydrochloride (1) was synthesized and characterized by IR, 1H- and 13C-NMR spectroscopy, mass spectroscopy and elemental analysis. In vitro antitumor action of 1, and two more R2eddip esters, dialkyl (S,S)-ethylenediamine-N,N′-di-2-propanoate dihydrochlorides, obtained before (alkyl = n-Bu or n-Pe, 2 and 3, respectively), was determined against cervix adenocarcinoma (HeLa), human melanoma (Fem-x), human chronic myelogenous leukemia (K562) cells, and a non-cancerous cell line human embryonic lung fibroblast (MRC-5), using the microculture tetrazolium test MTT assay. Esters 1–3 showed higher cytotoxicity and better selectivity in comparison to cisplatin, used as reference compound. The highest activity was expressed by 1, with IC50(Fem-x) value of 1.51±0.09 μM.

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