Polarographisches studium der photolyse und photoreduktion von riboflavin und 6,7-dimethyl-9-(formylmethyl)-isoalloxazin

摘要: Abstract The photolysis and photoreduction of riboflavin 6,7-dimethyl-9-(formylmethyl)-isoalloxazine (IV) was studied by polarographic methods under anaerobic conditions. A quantitative comparison the products Compound IV revealed that in acid, neutral slightly alkaline medium, lumichrome reduced form are principal products. In addition, gives rise to a small amount leuco minute amounts 6,7-dimethyl-9-(2′-hydroxyethyl)-isoalloxazine lumiflavin as side Formaldehyde is produced photolytic decomposition chain IV. dependence velocity on structure isoalloxazine derivatives medium studied. investigation presence certain amino acids (histidine, proline, sarcosine, cysteine, methionine, well EDTA) which can be mercury electrode. cysteine an equivalent formed during reduction riboflavin. published scheme mechanism were discussed light experimental results obtained.