title: Novel bicyclic nucleoside analogue (1S,5S,6S)-6- hydroxy-5-hydroxymethyl-1-(uracil-1-yl)-3,8-dioxabicyclo[3.2.1]octane: synthesis and incorporation into oligodeoxynucleotides.
abstract: The novel bicyclic nucleoside (1S,5S,6S)-6-hydroxy-5-hydroxymethyl-1-(uracil-1-yl)-3,8-dioxabicyclo[3.2.1]octane [2'-deoxy-1'-C,4'-C-(2-oxapropano)uridine] (15), expected to be restricted into an O4'-endo furanose conformation, was synthesized from the known 1-(3'-deoxy-beta-D-psicofuranosyl)uracil 5. The phosphoramidite derivative of 15 was successfully incorporated into oligodeoxynucleotides using standard methods, and thermal denaturation studies showed moderate decreases in duplex stabilities of -2.1 and -1.5 degrees C per modification toward complementary DNA and RNA, respectively.
authors.affiliation: Center for Synthetic Bioorganic Chemistry, Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen, Denmark.
authors.forename: L
authors.initials: L
authors.lastname: Kvaernø
authors.forename: J
authors.initials: J
authors.lastname: Wengel
mesh_terms: D001643:Bridged Bicyclo Compounds / Q000737:chemistry*; D009691:Nucleic Acid Denaturation; D009705:Nucleosides / Q000737:chemistry*; D009838:Oligodeoxyribonucleotides / Q000138:chemical synthesis* / Q000737:chemistry; D012313:RNA / Q000737:chemistry; D020871:RNA Stability
chemical_list: D001643:Bridged Bicyclo Compounds; D009705:Nucleosides; D009838:Oligodeoxyribonucleotides; D012313:RNA