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American Chemical Society, Organometallics, 21(35), p. 3734-3742, 2016

DOI: 10.1021/acs.organomet.6b00694

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From Sunscreen to Anticancer Agent: Ruthenium(II) Arene Avobenzone Complexes Display Potent Anticancer Activity

Journal article published in 2016 by Riccardo Pettinari, Fabio Marchetti, Agnese Petrini, Claudio Pettinari ORCID, Giulio Lupidi, Piotr Smolenski, Rosario Scopelliti, Tina Riedel, Paul J. Dyson
This paper was not found in any repository; the policy of its publisher is unknown or unclear.
This paper was not found in any repository; the policy of its publisher is unknown or unclear.

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Abstract

A series of ruthenium(II) arene derivatives (arene = cymene (cym), hexamethylbenzene (hmb)) containing avobenzone (1-(4-tert-butylphenyl)-3-(4-methoxyphenyl)propane-1,3-dione, AVBH) and PTA (1,3,5-triaza-7-phosphaadamantane) or PTA-Me (N-methyl-1,3,5-triaza-7-phosphaadamantane cation) have been synthesized and fully characterized. Three types of complexes have been obtained: i.e., neutral [Ru(arene)(AVB)Cl] (1, arene = cym; 2, arene = hmb), monocationic [Ru(arene)(AVB)(PTA)][SO3CF3] (3, arene = cym; 4, arene = hmb), and dicationic [Ru(arene)(AVB)(PTA-Me)][SO3CF3][BF4] (5, arene = cym; 6, arene = hmb). The solid-state structures of 1 and 2 were determined by single-crystal X-ray diffraction. The cytotoxicity of the complexes has been evaluated in vitro against human ovarian carcinoma cells, A2780 and A2780cisR, as well as against nontumorous Human Embryonic Kidney (HEK293) cells. The ionic complexes with hydrophilic PTA and PTA-Me ligands in 3-6 are considerably more active than the neutral complexes 1 and 2.