Journal : J. Med. Chem.
Title : Design, synthesis, and pharmacological evaluation of fluorinated tetrahydrouridine derivatives as inhibitors of cytidine deaminase.
Year : 2014
Volume : 57
Issue : 6
First Page : 2582
Last Page : 2588
Authors : Ferraris D, Duvall B, Delahanty G, Mistry B, Alt J, Rojas C, Rowbottom C, Sanders K, Schuck E, Huang KC, Redkar S, Slusher BB, Tsukamoto T.
Abstract : Several 2'-fluorinated tetrahydrouridine derivatives were synthesized as inhibitors of cytidine deaminase (CDA). (4R)-2'-Deoxy-2',2'-difluoro-3,4,5,6-tetrahydrouridine (7a) showed enhanced acid stability over tetrahydrouridine (THU) 5 at its N-glycosyl bond. As a result, compound 7a showed an improved oral pharmacokinetic profile with a higher and more reproducible plasma exposure in rhesus monkeys compared to 5. Co-administration of 7a with decitabine, a CDA substrate, boosted the plasma levels of decitabine in rhesus monkeys. These results demonstrate that compound 7a can serve as an acid-stable alternative to 5 as a pharmacoenhancer of drugs subject to CDA-mediated metabolism.