title: Synthesis and antiviral activities of 2-substituted azino-3-(D-arabinofuranosyl)-5-carboxymethylene-thiazolidine-4-ones.
abstract: 2-(1-Isopropylidene)azino-3-beta and 3-alpha-D-arabinofuranosyl-5-methoxycarbonylmethylenethiazolidine-4-ones (III) and (IV) have been synthesized by condensation of benzylated alpha-chloro-D-arabinofuranose (V) with o-(trimethylsilyl)-2-(1-isopropilidene)azino-5-methoxycarbonylmethylen- thiazolidine-4-one (VI) in the presence of SnCl4 or molecular sieves. Condensation of benzoylated alpha, beta-bromo-D-arabinose (VII) with (VI) led exclusively to the alpha anomer (VIII). 2-(1-Isopropylidene)azino-3-alpha-D-arabinofuranosyl-5-carbamoylmethylene- thiazolidine-4-one (IX) has been synthesized from (IV) (R, R1, R2 = CH3). 1H-N.M.R. and 13C-N.M.R. data confirmed the structures of (III) and (IV) (R, R1, R2 = CH3 and R, R1 = CH3, R2 = Ph). Antiviral activities were tested on monolayer cultures of KB-cells. Whereas previously tested beta-D-ribofuranosyl derivatives had moderate activity, alpha and/or beta-D-arabinofuranosyl derivatives are totally inactive against herpes simplex and poliovirus.
mesh_terms: D000998:Antiviral Agents / Q000138:chemical synthesis*; D001087:Arabinonucleosides / Q000138:chemical synthesis* / Q000494:pharmacology; D055598:Chemical Phenomena; D002621:Chemistry; D003588:Cytopathogenic Effect, Viral / Q000187:drug effects; D013844:Thiazoles / Q000138:chemical synthesis* / Q000494:pharmacology; D010948:Viral Plaque Assay
chemical_list: D000998:Antiviral Agents; D001087:Arabinonucleosides; D013844:Thiazoles