title: New synthetic approach to nucleoside phosphorofluoridates and fluoridites. Novel type of phosphitylating reagents containing 4-nitrophenoxy group.
abstract: New DNA analogues which have -OP(O)F-O internucleotide linkage are prepared by two methods. One route is based on transformation of a deoxynucleoside phosphoroimidazolidate by benzoylfluoride into the corresponding phosphorofluoridate. Alternative route begins with condensing of a new type of phosphoroamidites containing 4-nitrophenoxy group: N,N,N',-tetraisopropyl-O-4-nitrophenylphosphorodiamidite 9 to yield the dideoxynucleoside-4-nitrophenylphosphites which are readily converted into the corresponding dideoxynucleoside phosphorofluoridates and their sulfur analogues. Second part of this paper illustrates application of the N,N-diisopropyl-O-methyl-O-4-nitrophenylphosphoroamidite 12 and N,N-diisopropyl-O-4-nitrophenyl-P-methylphosphonoamidite 16 in efficient synthesis of dideoxynucleotides and their thio- and selenoanalogues.
authors.affiliation: Polish Academy of Sciences, Centre of Molecular and Macromolecular Studies, Lódź, Sienkiewicza.
authors.forename: J
authors.initials: J
authors.lastname: Michalski
mesh_terms: D000577:Amides; D005459:Fluorides; D007202:Indicators and Reagents; D009711:Nucleotides / Q000138:chemical synthesis*; D063065:Organophosphonates; D010710:Phosphates; D010756:Phosphoric Acids
chemical_list: D000577:Amides; D007202:Indicators and Reagents; D009711:Nucleotides; D063065:Organophosphonates; D010710:Phosphates; D010756:Phosphoric Acids; C011067:phosphoramidic acid; D005459:Fluorides