8-Azaflavin was synthesized for the first time, and it was found that 8-azaflavin is much more reactive (>104) than 3,10-dimethylisoalloxazine for oxidation of thiols in aqueoussolution. Catalytic efficiency for disulfides synthesis was also examined under aerobic conditions.
Kharasch reaction: Cu-catalyzed and non-Kharasch metal-free peroxidation of barbituric acids
作者:Oleg V. Bityukov、Vera A. Vil'、George K. Sazonov、Andrey S. Kirillov、Nikita V. Lukashin、Gennady I. Nikishin、Alexander O. Terent'ev
DOI:10.1016/j.tetlet.2019.02.042
日期:2019.3
It was discovered that the Kharasch peroxidation of barbituricacids proceeds both with a Cu-catalyst and without a metal catalyst. Despite the presence of possible thermal-initiated side oxidation pathways, α-tert-butylperoxybarbiturates were selectively prepared from substituted barbituricacids and tert-butyl hydroperoxide.
novel strategy to regulate cofactor balance in vivo for whole‐cell biotransformation using a synthetic flavin analogue is reported. High efficiency, easy operation, and good applicability were observed for this system. Confocal laser scanning microscopy was employed to verify that the synthetic flavin analogue can directly permeate into Escherichia coli cells without modifying the cell membrane. This
Syntheses and reactivity of bisflavins. Oxidation of N-benzyl-1,4-dihydronicotinamide by flavins in aqueous solution
作者:Yumihiko Yano、Eiichi Ohya
DOI:10.1039/p29840001227
日期:——
Several bisflavins linked at the 10,10′-positions of isoalloxazine rings have been synthesized. The kinetics of the oxidation of N-benzyl-1,4-dihydronicotinamide in aqueoussolution have been examined. It has been found that each flavin of a bisflavin is considerably influenced by another intramolecular flavin moiety due to the formation of a charge-transfer complex between intramolecularly reduced
UNUSUAL KINETIC BEHAVIOR OF BIS-FLAVIN FOR<i>N</i>-BENZYL-1,4-DIHYDRONICOTINAMIDE (BNAH) REDUCTION IN AN AQUEOUS SOLUTION
作者:Yumihiko Yano、Eiichi Ohya
DOI:10.1246/cl.1983.1281
日期:1983.8.5
Several bis-flavins linked at 10,10′-positions of isoalloxazine rings were synthesized. The reactivity of each flavin of a bis-flavin was found to be considerably influenced by another intramolecular flavin moiety, depending on the conformation of the bis-flavin.