title: Synthesis of amide-linked [(3')CH2CO-NH(5')] nucleoside analogues of small oligonucleotides.
abstract: We report syntheses of new amide-linked (di-penta)nucleoside analogues of antisense oligonucleotide components. Solution-phase coupling of 3'-(carboxymethyl)-3'-deoxy- and 5'-amino-5'-deoxynucleoside derivatives provides amide dimers. Activated [3'-(carboxymethyl)-3'-deoxy] units with a 5'-azido-5'-deoxy function provide "masked" 5'-amino-5'-deoxy residues for chain extension, and a 5'-O-DMT-protected unit provides the 5'-terminus for attachment to a phosphodiester linkage.
authors.affiliation: Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah 84602-5700, USA.
authors.forename: M J
authors.initials: MJ
authors.lastname: Robins
authors.forename: B
authors.initials: B
authors.lastname: Doboszewski
authors.forename: B L
authors.initials: BL
authors.lastname: Nilsson
authors.forename: M A
authors.initials: MA
authors.lastname: Peterson
mesh_terms: D000577:Amides / Q000737:chemistry*; D009705:Nucleosides / Q000138:chemical synthesis* / Q000737:chemistry; D009841:Oligonucleotides / Q000737:chemistry*; D016376:Oligonucleotides, Antisense / Q000737:chemistry*
chemical_list: D000577:Amides; D009705:Nucleosides; D009841:Oligonucleotides; D016376:Oligonucleotides, Antisense