Synthesis, characterization, crystal structure of novel Cu (II), Co (III), Fe (III) and Cr (III) complexes with 2-hydroxybenzaldehyde-4-allyl-S-methylisothiosemicarbazone: Antimicrobial, antioxidant and in vitro antiproliferative activity
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PAHONTU, Elena Mihaela; USATAIA, Irina; GRAUR, Vasile; CHUMAKOV, Yurii; PETRENKO, Peter; GUDUMAC, Valentin; GULEA, Aurelian. Synthesis, characterization, crystal structure of novel Cu (II), Co (III), Fe (III) and Cr (III) complexes with 2-hydroxybenzaldehyde-4-allyl-S-methylisothiosemicarbazone: Antimicrobial, antioxidant and in vitro antiproliferative activity. In: Applied Organometallic Chemistry. 2018, nr. 12(32), p. 0. ISSN 0268-2605.
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Applied Organometallic Chemistry
Numărul 12(32) / 2018 / ISSN 0268-2605

Synthesis, characterization, crystal structure of novel Cu (II), Co (III), Fe (III) and Cr (III) complexes with 2-hydroxybenzaldehyde-4-allyl-S-methylisothiosemicarbazone: Antimicrobial, antioxidant and in vitro antiproliferative activity


DOI: 10.1002/aoc.4544
Pag. 0-0

Pahontu Elena Mihaela1, Usataia Irina2, Graur Vasile2, Chumakov Yurii34, Petrenko Peter3, Gudumac Valentin5, Gulea Aurelian2
 
1 University of Medicine and Pharmacy “Carol Davilla”, Bucharest,
2 State University of Moldova,
3 Institute of Applied Physics,
4 Gebze Technical University,
5 ”Nicolae Testemițanu” State University of Medicine and Pharmacy
 
Disponibil în IBN: 21 iunie 2019


Rezumat

2-Hydroxybenzaldehyde-4-allyl-S-methylisothiosemicarbazone and Cu (II), Co (III), Fe (III) and Cr (III) complexes were synthesized and characterized. The new obtained compounds were investigated by elemental analysis, magnetic susceptibility measurements, molar electric conductivity, IR, 1H NMR, 13C NMR, UV–Vis spectroscopy. In addition, the structure of the ligand and six complexes has been determined by single-crystal X-ray diffraction analysis. The Cu atom in complex 3 is penta-coordinated in a distorted square–pyramidal coordination geometry, while the metals in complexes 5–9 are in a distorted octahedral environment. For all compounds the antimicrobial activity was studied on a series of standard strains, such as Staphylococcus aureus, Escherichia coli, Enterococcus faecalis, Salmonella abony and Candida albicans. The in vitro antiproliferative activity of the ligand and complexes was screened on human leukemia HL-60 cells, human cervical epithelial HeLa cells, human epithelial pancreatic adenocarcinoma BxPC-3 cells, human muscle rhabdomyosarcoma spindle and large multinucleated RD cells. The primary screening on a wider series of cancer cells showed that copper coordination compound 2 manifests high activity towards HeLa, BxPC-3 and RD cancer cells, which is three–six times higher than the activity of doxorubicin. The selectivity index that is the ratio between the IC50 value for the normal MDCK cells and IC50 values for the cancer cells varies in the range 2.44–21.17. This index is 5.5–11 times higher for the copper coordination compound 2 than for the doxorubicin. Cr (III), Fe (III) and Co (III) coordination compounds 6–9 manifest high antioxidant activity towards ABTS•+ that exceeds 47–67 times the activity of Trolox.

Cuvinte-cheie
Antimicrobial activity, antioxidant activity, antiproliferative activity, metal complexes, X-ray crystal structure