OLIGONUCLEOTIDE-LIGAND CONJUGATES AND PROCESS FOR THEIR PREPARATION
申请人:ALNYLAM PHARMACEUTICALS, INC.
公开号:US20160376585A1
公开(公告)日:2016-12-29
The present invention relates to ligand conjugates of oligonucleotides (e.g., iRNA agents) and methods for their preparation. The ligands are derived primarily from monosaccharides These conjugates are useful for the in vivo delivery of oligonucleotides.
Ligand-Modified Double-Stranded Nucleic Acids
申请人:Dicerna Pharmaceuticals, Inc.
公开号:US20170305956A1
公开(公告)日:2017-10-26
The invention provides for double stranded nucleic acid molecules comprising a 5′ extension of the sense or antisense strand and further comprising a plurality of nucleotides that are conjugated to a ligand and methods of using the double-stranded nucleic acid molecules. Ligand-modified oligomers where the sense stands form a tetraloop provide new potent and stable RNA interference agents. These dsNA molecules are synthesized using a plurality of nucleotides that include ligand-modified monomers, nucleotide analog monomers, modified nucleotide monomers and the like, using standard nucleotide synthetic methods and systems.
Hemilabile Ligands in Organolithium Chemistry: Substituent Effects on Lithium Ion Chelation
作者:Antonio Ramírez、Emil Lobkovsky、David B. Collum
DOI:10.1021/ja030322d
日期:2003.12.1
accelerations based on the gem-dimethyl effect are nonexistent and that substituents generally retard the reaction. With the aid of semiempirical and DFT computational studies, the factors influencing chelation are discussed. It seems that severe buttressing within chelates of the substitutionally rich ligands precludes a net stabilization of the chelates relative to nonchelated (eta(1)-solvated) forms.