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Inhibition of uridine phosphorylase. Synthesis and structure-activity relationships of aryl-substituted
G F Orr1, D L Musso, J L Kelley
1Division of Organic Chemistry, Glaxo Wellcome Inc., Research Triangle Park, North Carolina 27709, USA.
Journal of Medicinal Chemistry
|April 11, 1997
Abstract:
Structure-activity relationship studies on a series of 1-((2-hydroxyethoxy)methyl)-5-(3-(substituted-phenoxy)benzyl)uracils as inhibitors of murine liver uridine phosphorylase have led to compounds with IC50s as low as 1.4 nM. The two most potent compounds, 10j (3-cyanophenoxy) and 11f (3-chlorophenoxy) were tested in vivo for effects on steady-state concentrations of circulating uridine in mice and rats. Both compounds were substantially more efficacious than BAU (5-benzylacyclouridine) both in vitro and in vivo.