Figure 2.
Phosphorylation rates of dThd, N5-2OH and N3-substituted dThd analogues IPwith hTK1. Assay products were separated by PEI–cellulose TLC and quantified by β-radiography. (A). Compounds 3e, 3f and 7e-7g; (a) dThd monophosphate (dTMP), (b) compound-monophosphates (N5-2OH, 3e, 3f and 7e-7g) and (c) monophosphorylated degradation products, presumably dTMP. (B). Compounds 8, 9a, 9b1/2-9d1/2, (a) dTMP and (b) compound-monophosphates (8, 9a, 9b1/2-9d1/2). (C). Compounds 10, 11a, 11b1/2-11d1/2, (a) dTMP and (b) compound-monophosphates (11a, 11b1/2-11d1/2)