title: Synthesis and biological evaluation of 1,3-oxathiolane 5-azapyrimidine, 6-azapyrimidine, and fluorosubstituted 3-deazapyrimidine nucleosides.
abstract: (2R,5S)-5-Amino-2-[2-(hydroxymethyl)-1,3-oxathiolan-5-yl]- 1,2,4-triazine-3(2H)-one (8) and (2R,5R)-5-amino-2-[2-(hydroxymethyl)-1,3-oxathiolan-5-yl]-1,2,4-tr iazine-3(2H)-one (9) have been synthesized via a multi-step procedure from 6-azauridine. (2R,5S)-4-Amino-1-[2-(hydroxymethyl)-1,3-oxathiolan-5-yl]-1,3, 5-triazine-2(1H)-one (11) and (2R,5R)-4-amino-1-[2-(hydroxymethyl)-1,3-oxathiolan-5-yl]- 1,3,5-triazine-2(1H)-one (12), and the fluorosubstituted 3-deazanucleosides (19-24) have been synthesized by the transglycosylation of (2R,5S)-1-[2-[[(tert-butyldiphenylsilyl) oxy]methyl]-1,3-oxathiolan-5-yl] cytosine (2) with silylated 5-azacytosine and the corresponding silylated fluorosubstituted 3-deazacytosines, respectively, in the presence of trimethylsilyl trifluoromethanesulfonate as the catalyst in anhydrous dichloroethane, followed by deprotection of the blocking groups. These compounds were tested in vitro for cytotoxicity against L1210, B16F10, and CCRF-CEM tumor cell lines and for antiviral activity against HIV-1 and HBV.
authors.affiliation: Department of Pharmacology, Cancer Center, Yale University School of Medicine, New Haven, Connecticut 06520-8066, USA.
authors.forename: M C
authors.initials: MC
authors.lastname: Liu
authors.forename: M Z
authors.initials: MZ
authors.lastname: Luo
authors.forename: D E
authors.initials: DE
authors.lastname: Mozdziesz
authors.forename: T S
authors.initials: TS
authors.lastname: Lin
authors.forename: G E
authors.initials: GE
authors.lastname: Dutschman
authors.forename: E A
authors.initials: EA
authors.lastname: Gullen
authors.forename: Y C
authors.initials: YC
authors.lastname: Cheng
authors.forename: A C
authors.initials: AC
authors.lastname: Sartorelli
mesh_terms: D000818:Animals; D000970:Antineoplastic Agents / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology; D000998:Antiviral Agents / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology; D001372:Aza Compounds / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology; D001380:Azauridine / Q000737:chemistry; D006031:Glycosylation; D015497:HIV-1 / Q000187:drug effects; D006515:Hepatitis B virus / Q000187:drug effects; D006571:Heterocyclic Compounds / Q000737:chemistry*; D006801:Humans; D011741:Pyrimidine Nucleosides / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology; D013876:Thiophenes; D014407:Tumor Cells, Cultured
chemical_list: D000970:Antineoplastic Agents; D000998:Antiviral Agents; D001372:Aza Compounds; D006571:Heterocyclic Compounds; D011741:Pyrimidine Nucleosides; D013876:Thiophenes; C013177:1,3-oxathiolane; D001380:Azauridine