Abstract
This paper describes a very simple synthesis route of novel acyclic nucleosides and phosphonic acid nucleosides. The condensation of the mesylates 6 and 17 with the natural nucleosidic bases (A, C, U, T) under nucleophilic substitution (K(2)CO(3), 18-Crown-6, DMF) and deprotection afforded the target nucleosides (11, 12, 13, 14) and phosphonic acid nucleosides (22, 23, 24, 25). In addition, these compounds were evaluated for their antiviral properties against various viruses. Uracil derivative 24 shows significant anti-HCMV activity (EC(50) = 10.24 microM).
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