Syntheses of Labeled Vitamers of Folic Acid to Be Used as Internal Standards in Stable Isotope Dilution Assays
作者:Achim Freisleben、Peter Schieberle、Michael Rychlik
DOI:10.1021/jf025571k
日期:2002.8.1
[2H4]Folic acid was synthesized by deuterating p-aminobenzoic acid, which was then coupled to glutamic acid and 6-formylpterin. Using [2H4]folic acid as starting component enabled the preparation of labeled vitamers tetrahydrofolate, 5-formyltetrahydrofolate, 5-methyltetrahydrofolate, and 10-formylfolate which were characterized by electrospray mass spectrometry and collision-induced dissociation. The mass
通过将对氨基苯甲酸氘化来合成[2H4]叶酸,然后将其与谷氨酸和6-甲酰基蝶呤偶联。使用[2H4]叶酸作为起始组分能够制备标记的维生素四氢叶酸,5-甲酰基四氢叶酸,5-甲基四氢叶酸和10-甲酰基叶酸,其通过电喷雾质谱和碰撞诱导解离来表征。质谱研究证实,这些化合物可用作稳定同位素稀释测定法中的内标。