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  • Title: Detection of new metabolites of trifluridine (F3TdR) using 19F NMR spectroscopy.
    Author: Tandon M, Kumar P, Wiebe G, Wiebe LI.
    Journal: Biochem Pharmacol; 1992 Dec 01; 44(11):2223-8. PubMed ID: 1472088.
    Abstract:
    The metabolism of 5-trifluoromethyl-2'-deoxyuridine (trifluridine, F3TdR) in male BALB/C mice has been studied by 19F NMR spectroscopy. Contrary to previous reports, a number of fluorinated metabolites were observed in urine, whole livers and blood samples taken from mice after i.p. injection of F3TdR. The present study describes the identification of two new metabolites in mouse urine using the 19F NMR technique. The NMR of crude urine showed the presence of F3TdR 5-trifluorothymine (F3T), the newly-identified metabolites, 5-trifluoromethyl-5,6-dihydrouracil (DHF3T) and 5-trifluoromethyl-5,6-dihydroxyracil (DOHF3T), and several new, as yet unidentified fluorinate metabolites. These two new metabolites were characterized by comparison to authentic compounds prepared synthetically from F3T.
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