Structural characterization of a highly active superoxide-dismutase mimic

Balasubramanian, Vimalkumar and Ezhevskaya, Maria and Moons, Hans and Neuburger, Markus and Cristescu, Carol and Van Doorslaer, Sabine and Palivan, Cornelia. (2009) Structural characterization of a highly active superoxide-dismutase mimic. Physical Chemistry Chemical Physics, 11. pp. 6778-6787.

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Official URL: http://edoc.unibas.ch/dok/A5259882

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A lot of effort has been put into the synthesis of copper complexes with superoxide-dismutase(SOD) activity because of their potential pharmaceutical applications. In this work,we study a model for these so-called SOD mimics (SODm), namely a copper complex of6-(2-hydroxy-benzaldehyde) hydrazono-as-triazine-3,5-dione, which shows an extremely highSOD-like activity in solution. X-Ray diffraction reveals that the complex adopts a di-copperstructure in the solid state. However, in solution, the chloride bridges are broken, forming amono-copper center as follows from UV/Vis absorption and electron paramagnetic resonance(EPR) experiments. Using pulsed EPR techniques in combination with DFT (density functionaltheory) computations, the electronic structure of the complex in solution is analyzed in detail andrelated to its high SOD activity. The structure–activity analysis serves to orient further syntheticefforts to obtain the optimum geometry around the metal essential for SOD-like activity.
Faculties and Departments:05 Faculty of Science
UniBasel Contributors:Neuburger, Markus and Balasubramanian, Vimalkumar and Palivan, Cornelia G
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Royal Society of Chemistry
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:10 Apr 2017 07:45
Deposited On:22 Mar 2012 13:43

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