Publications by authors named "S I Orysyk"

Background: One of the most promising strategies to develop multi-targeted anticancer therapeutics is to introduce to the structure of a potential drug two or more pharmacophores (functional groups or structural fragments), which have antiproliferative, proapoptotic or antimetastatic properties acting via different mechanisms.

Objective: To design, synthesize and perform screening of a novel hybrid anticancer compound.

Method: A novel hybrid compound 4-[(E)-2-phenylethenesulfonamido]-N-hydroxybutanamide, combining butanehydroxamate and styrenesulfonamide moieties, was designed, synthesized and investigated as a potent antimetastatic and antiproliferative agent.

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Four novel Pd and Pt mononuclear π-coordination compounds with general formula [M(HL)Cl], M=Pd, Pt have been synthesized by reaction of [PdCl], [PtCl] anions with N-allyl-4-morpholinethiocarboxamide (HL) and N-Allyl-N'-tert-butylthiourea (HL). All complexes have been characterized by single-crystal X-ray diffraction study and H, C NMR spectroscopy. Cytotoxic, cytostatic and proapoptotic activities of compounds have been determined in vitro on HeLa cell line and compared with cisplatin as etalon drug.

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The title compound, CHClN, was synthesized by the cyclization of 1-(4,6-di-methyl-pyrimidin-2-yl)-4-phenyl-thio-semicarbazide in the presence of Ni(NO). The mol-ecular structure of the compound is essentially planar. In the crystal, mol-ecules form dimers pairs of N-H⋯N hydrogen bonds between the H atom of the exocyclic amino group and the N atom at the 4-position of the triazole ring.

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Pd(I) and Ni(II) complex compounds: [Pd(AMMT)2]Cl2 (1), [Pd(AMMT)4]Cl2 (2) and [Ni(AMMT)2(H2O)](NO3)2 (3) with 4-amino-3-mercapto-5-methyl-1,2,4-triazole (AMMT) have been synthesized. The spectral characteristics of 1, 2 were studied by 1H (13C) NMR and UV-Vis spectroscopy. X-ray diffraction studies established that all complexes contain the AMMT molecule, which are coordinated to the central metal ion in the thione tautomeric form.

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In the title compound, [PdCl2(C5H7N3OS)], the Pd(II) atom adopts a distorted square-planar coordination sphere defined by two N atoms of the bidentate ligand and two Cl atoms. The mean deviation from the coordination plane is 0.029 Å.

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