Abstract

Complex formation between copper(II) and (R,S)-α-hydroxymethylornithine of (R,S)-N^α-benzoyl-α-hydroxymethylornithine was studied in aqueous solution by potentiometric and spectroscopic (electron paramagnetic resonance and electronic absorption) techniques. The results show that the α-hydroxymethyl derivatives of ornithine are coordinated through the alcoholic group to the copper(II) ion in basic solution. Deprotonation and coordination of the α-hydroxymethyl group occurs and yields species with the amino and/or carboxylato groups also bound to the metal ion.

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