title: Solid-phase synthesis of oligo-2-pyrimidinone-2'-deoxyribonucleotides and oligo-2-pyrimidinone-2'-deoxyriboside methylphosphonates.
abstract: A synthetic method was developed for the synthesis of oligodeoxyribonucleotides and oligodeoxyribonucleoside methylphosphonates comprised exclusively of the fluorescent 2-pyrimidinone base for the first time. The method utilized the solid-phase 2-cyanoethylphosphoramidite and methylphosphonamidite chemistry for internucleotide couplings and a baselabile oxalyl linkage to anchor the oligomers onto the CPG support. Cleavage of the oligomers from the support was effected by a short treatment of the support with 5% ammonium hydroxide in methanol at room temperature, without any degradation of the base-sensitive 2-pyrimidinone residues or the base-sensitive methylphosphonate backbone.
authors: Department of Biochemistry, School of Hygiene and Public Health, Johns Hopkins University, Baltimore, MD 21205, USA.
authors: Y
authors: Y
authors: Zhou
authors: P O
authors: PO
authors: Ts'o
mesh_terms: D015394:Molecular Structure; D009838:Oligodeoxyribonucleotides / Q000138:chemical synthesis*; D009943:Organophosphorus Compounds / Q000138:chemical synthesis; D011744:Pyrimidinones / Q000138:chemical synthesis*
chemical_list: D009838:Oligodeoxyribonucleotides; D009943:Organophosphorus Compounds; D011744:Pyrimidinones; C032627:methylphosphonic acid