Riboflavin 5′-Hydroxymethyl Oxidation

Synthesis of 5-acetoxymethyl- and 5-hydroxymethyl-2-vinyl-furan.

5-Acetoxymethyl- and 5-hydroxymethyl-2-vinylfuran were synthesized by two routes. The first route starts from 2-methylfuran and the second from furfuryl acetate. The latter route, involving successive Vilsmeier-Haack and Wittig reactions, is suitable for producing 5-acetoxymethyl-2-vinylfuran and 5-hydroxymethyl-2 vinylfuran in 68% and 60%yields, respectively.

Determination of Riboflavin-5'-monosulfate.

As reported previously, FMS* has been synthesized as a coenzyme analogue1 ) and has been found to inhibit D-amino acid oxidase in competition with FAD2)3 )4). On the other hand, it has been observed that FMS has an inhibitory action on the growth of riboflavin requiring bacteria5). From these results, it was supposed that FMS, as an antivitamin B2, disturbs the metabolic pattern in higher anima...

Identification and Quantification of 5-Hydroxymethyl Furfural in Food Products

5-Hydroxymethylfurfural (5-HMF) is known as an indicator of quality deterioration in a wide range of foods. The current study covered 70 samples taken from domestically produced foods and drinks available on the Iranian markets (including honey, jam, fruit cakes tomato paste, ketchup, syrup, fruit juice, canned fruit, UHT milk, instant coffee and jelly powder). HMF levels were determined using ...

The Luminescent Oxidation of Reduced Riboflavin or Reduced Riboflavin Phosphate in the Bacterial Luciferin-luciferase Reaction.

Chemicals from Biomass: Aerobic oxidation of 5-hydroxymethyl-2-furaldehyde into diformylfurane catalyzed by immobilized vanadyl-pyridine complexes

Introduction 5-Hydroxymethyl-2-furaldehyde (HMF), as diformylfurane precursor (DFF), is obtained from fructose or glucose dehydration. DFF is a versatile chemical, and there are numerous reports describing various applications as a monomer, as starting materials for the synthesis of pharmaceuticals and antifungal agents [1]. To date, few reports describe the use of air to oxidize (HMF) with het...