title: DNA and LNA oligonucleotides containing N2'-functionalised derivatives of 2'-amino-2'-deoxyuridine.
abstract: Synthesis of various N-acylated derivatives of 2'-amino-2'-deoxyuridine is described together with their incorporation into DNA and LNA oligonucleotides using the phosphoramidite approach on an automated DNA synthesizer. The thermal stabilities of duplexes formed by these 2'-amino-DNA-modified DNA or LNA/DNA chimeric strands and complementary DNA or RNA strands have been studied. Introduction of LNA monomers around the functionalised 2'-amino-DNA modifications results in reversal of the affinity-decreasing effect of the latter. This represents a novel general approach for design and synthesis of high-affinity functionalised oligonucleotides for biotechnological or medicinal applications.
authors.affiliation: Nucleic Acid Center, Department of Chemistry, University of Southern Denmark, DK-5230 Odense M, Denmark.
authors.forename: Neerja
authors.initials: N
authors.lastname: Kalra
authors.forename: Maria C
authors.initials: MC
authors.lastname: Parlato
authors.forename: Virinder S
authors.initials: VS
authors.lastname: Parmar
authors.forename: Jesper
authors.initials: J
authors.lastname: Wengel
mesh_terms: D004247:DNA / Q000138:chemical synthesis / Q000737:chemistry*; D003857:Deoxyuridine / Q000031:analogs & derivatives* / Q000737:chemistry; D015394:Molecular Structure; D009841:Oligonucleotides / Q000138:chemical synthesis / Q000737:chemistry*; D011687:Purines / Q000737:chemistry; D011743:Pyrimidines / Q000737:chemistry
chemical_list: C410434:2'-amino-2'-deoxyuridine; D009841:Oligonucleotides; D011687:Purines; D011743:Pyrimidines; D004247:DNA; C030986:pyrimidine; C030985:purine; D003857:Deoxyuridine