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Synthesis, physicochemical properties and antioxidant activity of deferiprone-cyclodextrin conjugates and their iron(iii) complexes

By Antonino Puglisi, John Spencer, Valentina Oliveri, Graziella Vecchio, Xiaole Kong, James Clarke and John Milton


3-Hydroxy-1,2-dimethylpyridin-4(1H)-one (deferiprone) is a successful iron chelator, which has been widely investigated for its activity in mitigating iron overload and in protecting against oxidative stress due to Reactive Oxygen Species (ROS). Herein, we present the synthesis, characterisation, physicochemical properties and antioxidant activity of two novel bioconjugates of β-cyclodextrin bearing the deferiprone moiety either on the upper rim (1) or on the lower rim (2) of the cyclodextrin and their iron(III) complexes. Protonation and iron stability constants were measured by spectrophotometric titration for the two systems and antioxidant activity studied for both the ligands and the iron(III) complexes

Topics: Q1, QC, QD
Publisher: Royal Society of Chemistry
Year: 2012
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