title: Synthesis and antiviral properties of some 2'-deoxy-5-(fluoroalkenyl)uridines.
abstract: The following 5-substituted 2,4-dimethoxypyrimidines were synthesized: 5-(2,2,2-trichloro-1-hydroxyethyl), 5-(2,2,2-trichloro-1-fluoroethyl),5-(2,2-dichloro-1-fluorovinyl) (5), and 5-(perfluoropropen-1-yl) (a mixture of E and Z isomers, 6 and 7). Demethylation of 5 gave 5-(2,2-dichloro-1-fluorovinyl)uracil, and demethylation of the mixture of 6 and 7 gave some pure (E)-5-(perfluoropropen-1-yl)uracil. Compound 5 was converted into its 2'-deoxyribonucleoside (12) and its alpha-anomer by standard procedures. 2'-Deoxy-3,5-dilithio-3',5'-O-bis(trimethylsilyl)uridine was reacted with the appropriate fluoroalkene to give the following 5-substituted 2'-deoxyuridines in low yield (6-24%): 5-(2-chloro-1,2-difluorovinyl) (a mixture of E and Z isomers, 15 and 16, which were separated on a small scale), 5-(perfluoropropen-1-yl), 5-(perfluorocyclohexen-1-yl), and 5-(perfluorocyclopenten-1-yl). In these reactions, 2'-deoxy-5-(trimethylsilyl)uridine and 2'-deoxyuridine were also formed. The 5-substituted 2'-deoxyuridines were tested for activity against herpes simplex virus type 1. Compound 12 and the mixture of 15 and 16 had an ID50 of 20-26 micrograms/mL in Vero cells. The activity of the mixture resided in one isomer, which by analogY with the corresponding (Z)- and (E)-5-(2-bromovinyl)-2'-deoxyuridines was concluded to be the Z isomer (16).
mesh_terms: D000998:Antiviral Agents / Q000138:chemical synthesis*; D002478:Cells, Cultured; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D003857:Deoxyuridine / Q000031:analogs & derivatives* / Q000138:chemical synthesis / Q000494:pharmacology; D006801:Humans; D018139:Simplexvirus / Q000187:drug effects
chemical_list: D000998:Antiviral Agents; D003857:Deoxyuridine