Possible molecular basis for antiviral activity of certain 5-substituted deoxyuridines

Autor: Sim, I S, Goodchild, J, Meredith, D M, Porter, R A, Raper, R H, Viney, J, Wadsworth, H J
Zdroj: Antimicrobial Agents and Chemotherapy; March 1983, Vol. 23 Issue: 3 p416-421, 6p
Abstrakt: The antiviral activity of five structurally related pyrimidine nucleosides, E-5-propenyl-2'-deoxyuridine, 5-allyl-2'-deoxyuridine, E-5-(1-butenyl)-2'-deoxyuridine, 5-(2-butenyl)-2'-deoxyuridine, and 5-butyl-2'-deoxyuridine, in cell culture against herpes simplex virus type 1 was examined. Analogs in which the C-C double bond of the 5-substituent was in conjugation with the pyrimidine ring were more potent antiviral drugs than were the corresponding nonconjugated and alkyl-substituted analogs. Differences in antiviral activity similar to those observed in cell culture occurred in virus-infected mice. The molecular basis for the greater antiviral activity of the conjugated isomers was investigated. It was observed that the conjugated isomer E-5-propenyl-2'-deoxyuridine had a greater affinity for virus thymidine kinase and, as the 5'-triphosphate, for virus DNA polymerase than did the nonconjugated isomer 5-allyl-2'-deoxyuridine. The results are discussed in relation to other data in the literature.
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