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Monday 15 December 2014

Novel complexes of ruthenium(II) with in situ formed flavanone-based ligands.



Dalton Trans., 2010,39, 9711-9718
http://pubs.rsc.org/en/content/articlelanding/2010/dt/c0dt00535e#!divAbstract


DOI: 10.1039/C0DT00535E

Corresponding authors
a
Department of Bioinorganic Chemistry, Medical University, Muszynskiego 1, Łódź, Poland
b
University of Łódź, Department of Crystallography and Crystal Chemistry, Pomorska 149/153, Łódź, Poland
c
School of Chemistry, National University of Ireland, Galway, University Road, Galway, Ireland
d
Medical University of Łódź, Department of Nucleic Acids Biochemistry, Mazowiecka 6/8, Łódź, Poland
e
Leiden Institute of Chemistry, Leiden University, Leiden, The Netherlands
Dalton Trans., 2010,39, 9711-9718

DOI: 10.1039/C0DT00535E





                                                                                                                   






 













Synthesis, structure and properties of two new flavanone complexes of Ru(II) are described. The new complexes form during the reaction of ruthenium(III) chloride with 3-aminoflavone (3-af) dissolved in an aliphatic alcohol. The formed products depend on the alcohol used and were found to be: cis-dichloridobis(3-imino-2-methoxyflavanone)ruthenium(II)·3H2O (1) from a methanolic solution and cis-dichloridobis(3-imino-2-ethoxyflavanone)ruthenium(II)·2H2O (2) from an ethanolic solution, in which the original ligand 3-af had been converted by dehydrogenative alcoholysis to an entirely new ligand. This paper presents the X-ray structure and detailed 1H-NMR analysis of both new compounds, as well as the study of their antiproliferative activity. The coordination of Ru(II) is octahedral with [RuCl2N2O2] chromophores, having trans chlorides and common Ru–L distances. Both 1 and 2 are highly cytotoxic towards the cisplatin resistant EJ and L1210 cell lines, and both complexes are as active as cisplatin in the sensitive cell lines. They display the ability to overcome cisplatin resistance in the drug resistant sub-lines EJcisR and L1210R. The present evidence suggests that the mechanism of biological activity may be different for these ruthenium compounds compared to cisplatin.








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Graphical abstract: Synthesis, single-crystal and solution structure analysis and in vitro cytotoxic activity of two novel complexes of ruthenium(ii) with in situ formed flavanone-based ligands.















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1 comment:

  1. Diet based on the plants is healthier and since the plants are rich into the flavonoids, it means that flavonoids are also healthy. See here: www.nfextracts.com/luteolin-supplements. This is the idea behind the Luteolin supplements with other flavonoid based supplements.

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