title: TSAO-T analogues bearing amino acids at position N-3 of thymine: synthesis and anti-human immunodeficiency virus activity.
abstract: Novel analogues of the anti-HIV-1 lead compound [1-[2',5'-bis-O-(tert-butyldimethylsilyl)-beta-D-ribofuranosyl]thymine]- 3'-spiro-5'-(4"-amino-1",2"-oxathiole-2',2'-dioxide) (TSAO-T) bearing different amino acids at position N-3 of thymine were prepared and evaluated as inhibitors of HIV replication. The synthesis of the target compounds was accomplished by coupling of the appropriate TSAO intermediate with a conveniently protected (L) amino acid in the presence of BOP and triethylamine, followed by deprotection of the amino acid moiety. Several TSAO derivatives, bearing at N-3 position of the thymine base an L-amino acid retaining the free carboxylic acid, acquired activity against HIV-2, in addition to their inhibitory effect on HIV-1.
authors.affiliation: Instituto de Química Médica (C.S.I.C.), Madrid, Spain.
authors.forename: C
authors.initials: C
authors.lastname: Chamorro
authors.forename: E
authors.initials: E
authors.lastname: De Clercq
authors.forename: J
authors.initials: J
authors.lastname: Balzarini
authors.forename: M J
authors.initials: MJ
authors.lastname: Camarasa
authors.forename: A
authors.initials: A
authors.lastname: San-Félix
mesh_terms: D019380:Anti-HIV Agents / Q000138:chemical synthesis / Q000737:chemistry* / Q000494:pharmacology; D002460:Cell Line; D015497:HIV-1 / Q000187:drug effects* / Q000502:physiology; D006801:Humans; D009682:Magnetic Resonance Spectroscopy; D008826:Microbial Sensitivity Tests; D015394:Molecular Structure; D013141:Spiro Compounds / Q000138:chemical synthesis / Q000737:chemistry* / Q000494:pharmacology; D013936:Thymidine / Q000031:analogs & derivatives* / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology; D013941:Thymine / Q000737:chemistry*; D014529:Uridine / Q000031:analogs & derivatives; D014779:Virus Replication / Q000187:drug effects
chemical_list: D019380:Anti-HIV Agents; D013141:Spiro Compounds; D013941:Thymine; D013936:Thymidine; C075132:TSAO-T; D014529:Uridine