The present invention relates to a compound according to Formula (la) or (lb) wherein R1; R3; Y and X are defined herein, and their use in methods of nucleic acid synthesis. Disclosed herein is a method of reducing the deamination of the guanine base during oligonucleotide synthesis. The method is particularly applicable when nitrite is used to remove an aminooxy terminating moiety from the sugar hydroxyl.
Nucleotide monomers containing 8-azapurin bases or a derivative thereof,
申请人:Hoechst Aktiengesellschaft
公开号:US05789562A1
公开(公告)日:1998-08-04
The invention relates to novel modified oligonucleotides which contain at least one 8-azapurine base and form more stable hybridization complexes with nucleic acids; To a process for their preparation, and to their use as inhibitors of gene expression, as probes for detecting nucleic acids, as aids in molecular biology, and as a pharmaceutical or diagnostic agent.