Association of a Reduced Riboflavin Derivative with Purities, Pyrimidines and Nicotinamide

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概要

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• Hydrogen bonding of a reduced riboflavin derivative in chloroform has been studied by infrared spectra measurements. The self-association of the reduced form of riboflavin tetraacetate is much stronger than that of the oxidized form. The reduced form can also form hydrogen bonded complexes with some aminopurines, aminopyrimidines, aminopyridines and nicotinamide derivatives. In the bonding with aminopyridines the contribution of a proton transfer must be predominant. At partial reduction states the formation of radicals, semiquinone forms, was detected with the aid of the electron spin resonance. The concentration of free radicals, however, is about 1 per cent of dissolved riboflavin tetraacetate. The infrared spectra at various stage of reduction can be interpreted by the sum of the two individual spectra of the fully reduced and oxidized forms.

• 公益社団法人 日本化学会の論文

著者

• Yu Byung

  Faculty of Pharmaceutical Sciences, The University of Tokyo

• Kyogoku Yoshimasa

  Faculty of Pharmaceutical Sciences, The University of Tokyo

関連論文

• Association of a Reduced Riboflavin Derivative with Purities, Pyrimidines and Nicotinamide

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