title: [New furano- and pyrrolo[2,3-d]pyrimidine nucleosides and their 5'-triphosphates: synthesis and biological properties].
abstract: Bicyclic furano[2,3-d]pyrimidine ribonucleosides were synthesized by Pd(0)- and CuI-catalyzed coupling of 5-iodouridine with terminal alkynes. The treatment of the resulting nucleosides with ammonia or methylamine solution in aqueous alcohol resulted in pyrrolo- and N(7)-methylpyrrolo[2,3-d]pyrimidine nucleosides. 5'-O-Triphosphates of bicyclic nucleosides were obtained by the treatment of the nucleosides with POCl3 in the presence of a "proton sponge." The 5'-O-triphosphates are not substrates for HCV RNA-dependent RNA polymerase, but are effective substrates for HCV RNA helicase/NTPase and did not inhibit ATP hydrolysis. Only 3-(beta-D-ribofuranosyl)-6-decyl-2,3-dihydrofuro-[2,3-d]pyrimidin-2-one showed a moderate anti-HCV activity in the HCV replicon system and efficiently inhibited replication of bovine viral diarrhea virus (BVDV) in KCT-cells, other compounds being inactive. None of the compounds were cytotoxic within the tested range of concentrations.
authors.forename: M A
authors.initials: MA
authors.lastname: Ivanov
authors.forename: A V
authors.initials: AV
authors.lastname: Ivanov
authors.forename: I A
authors.initials: IA
authors.lastname: Krasnitskaia
authors.forename: O A
authors.initials: OA
authors.lastname: Smirnova
authors.forename: I L
authors.initials: IL
authors.lastname: Karpenko
authors.forename: E F
authors.initials: EF
authors.lastname: Belanov
authors.forename: V S
authors.initials: VS
authors.lastname: Prasolov
authors.forename: V L
authors.initials: VL
authors.lastname: Tunitskaia
authors.forename: L A
authors.initials: LA
authors.lastname: Aleksandrova
mesh_terms: D000251:Adenosine Triphosphatases / Q000037:antagonists & inhibitors / Q000737:chemistry; D000818:Animals; D000998:Antiviral Agents / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology; D002417:Cattle; D002478:Cells, Cultured; D001908:Diarrhea Viruses, Bovine Viral / Q000187:drug effects / Q000502:physiology; D005663:Furans / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology; D016174:Hepacivirus / Q000187:drug effects; D006801:Humans; D010755:Organophosphates / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology; D011741:Pyrimidine Nucleosides / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology; D011758:Pyrroles / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology; D012093:Replicon; D013329:Structure-Activity Relationship; D017361:Viral Nonstructural Proteins / Q000037:antagonists & inhibitors / Q000737:chemistry; D014779:Virus Replication / Q000187:drug effects; D012697:Serine Endopeptidases; D043583:Nucleoside-Triphosphatase; D053487:DEAD-box RNA Helicases; D000085242:Viral Proteases; D012324:RNA-Dependent RNA Polymerase
chemical_list: D000251:Adenosine Triphosphatases; D000998:Antiviral Agents; D005663:Furans; D010755:Organophosphates; D011741:Pyrimidine Nucleosides; D011758:Pyrroles; D017361:Viral Nonstructural Proteins; C084422:NS3 protein, hepatitis C virus; D012697:Serine Endopeptidases; D043583:Nucleoside-Triphosphatase; D053487:DEAD-box RNA Helicases; D000085242:Viral Proteases; C087036:NS-5 protein, hepatitis C virus; D012324:RNA-Dependent RNA Polymerase