title: Thiosugars. VIII. Preparation of new 4'-thio-L-lyxo pyrimidine nucleoside analogues.
abstract: Reaction of 1-O-acetyl-2,3,5-tri-O-benzyl-4-thio-L-lyxofuranose with silylated pyrimidine bases and subsequent deprotection with boron tribromide led to 4'-thio-L-lyxo pyrimidine nucleosides. The 5-bromo-6-methyl derivative was prepared from methyl 2,3,5-tri-O-acetyl-4-thio-L-lyxofuranoside. Deacetylation was performed with sodium methoxide. The anomers were separated by HPLC and their configurations assigned by NMR spectroscopy and X-ray structural analyses. The biological activity of the nucleosides was tested.
authors.affiliation: Institut für Organische Chemie der Universität Hamburg, Germany.
authors.forename: J
authors.initials: J
authors.lastname: Wirsching
authors.forename: J
authors.initials: J
authors.lastname: Voss
authors.forename: G
authors.initials: G
authors.lastname: Adiwidjaja
authors.forename: J
authors.initials: J
authors.lastname: Balzarini
authors.forename: E
authors.initials: E
authors.lastname: De Clercq
mesh_terms: D000107:Acetylation; D000241:Adenosine / Q000031:analogs & derivatives* / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology; D000998:Antiviral Agents / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology; D002851:Chromatography, High Pressure Liquid; D009682:Magnetic Resonance Spectroscopy; D008958:Models, Molecular; D008968:Molecular Conformation; D011741:Pyrimidine Nucleosides / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology; D013872:Thionucleosides / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology; D014498:Uracil / Q000031:analogs & derivatives* / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology; D014780:Viruses / Q000187:drug effects; D014961:X-Ray Diffraction
chemical_list: D000998:Antiviral Agents; D011741:Pyrimidine Nucleosides; D013872:Thionucleosides; D014498:Uracil; D000241:Adenosine