Improved synthesis of oligonucleotides with an allylic backbone. Oligonucleotides containing acyclic, achiral nucleoside analogues: N-1 or N-9-[3-hydroxy-2-(hydroxymethyl)prop-1-enyl]nucleobases
Improved synthesis of oligonucleotides with an allylic backbone. Oligonucleotides containing acyclic, achiral nucleoside analogues: N-1 or N-9-[3-hydroxy-2-(hydroxymethyl)prop-1-enyl]nucleobases
Preparation and Properties of a New Type of Acyclic, Achiral Nucleoside Analogue
作者:Thomas Boesen、Daniel Sejer Pedersen、Jacob Jensen、Michael T. Munck、Brian M. Nielsen、Asger B. Petersen、Ulla Henriksen、Britta M. Dahl、Otto Dahl
DOI:10.1081/ncn-120021967
日期:2003.10
Preparation of the nucleoside analogues 1 and incorporation of 1, B = T, in deoxyribooligonucleotides by the phosphoramidite method is described. A two-step deprotection procedure was developed to reduce cleavage of the modified allylic unit. The binding properties of the modified oligonucleotides towards complementary DNA and RNA has been evaluated by Tm measurements showing a deltaTm of -2 to -6
Oligonucleotides containing a new type of acyclic, achiral nucleoside analogue: 1-[3-hydroxy-2-(hydroxymethyl)prop-1-enyl]thymine
作者:Thomas Boesen、Daniel Sejer Pedersen、Brian M. Nielsen、Asger B. Petersen、Ulla Henriksen、Britta M. Dahl、Otto Dahl
DOI:10.1016/s0960-894x(03)00008-8
日期:2003.3
An achiral, acyclic nucleoside analogue has been incorporated once or twice in oligodeoxyribonucleotides by the phosphoramidite method, and conditions found which allow deprotection of the oligonucleotides containing a sensitive modified allylic unit. The binding affinity of the modified oligonucleotides towards complementary DNA and RNA was reduced compared to unmodified DNA (DeltaT(m) -2 to -6.5degreesC). An oligonucleotide with two modifications at the 3'-end showed considerable resistance towards cleavage with a 3'-exonuclease. (C) 2003 Elsevier Science Ltd. All rights reserved.