The synthesis of cyclic, branched, and bicyclic oligonucleotides was performed by copper-catalyzed azide−alkyne cycloaddition assisted by microwaves in solution and on solid support. For that purpose, new phosphoramidite building blocks and new solid supports were designed to introduce alkyne and bromo functions into the same oligonucleotide by solid-phasesynthesis on a DNA synthesizer. The bromine
Glycoclusters and their pharmaceutical use as antibacterials
申请人:Centre National de la Recherche Scientifique
(CNRS)
公开号:EP2851371A1
公开(公告)日:2015-03-25
A molecule responding to formula (I) of the glycocluster type with galactose residues at their extremities.
Simple and efficient methods for the preparation of these compounds. Medical use of compounds (I) as inhibitors of infections by Pseudomonas aeruginosa, more specifically as inhibitors of Pseudomonas aeruginosa's virulence.
Concise Synthesis of Triazole-Linked 5′-Peptide-Oligonucleotide Conjugates by Click Chemistry
作者:Qunpeng Duan、Kui Lu、Li Ma、Dongxin Zhao
DOI:10.1080/15257770.2015.1037455
日期:2015.8.3
A concise synthesis of oligonucleotide 5′-peptide-conjugates via copper(I)-catalyzed azide-alkyne 1,3-dipolar cycloaddition in aqueous solution is described. Synthesis of reagents was accomplished by on-column derivatization of corresponding peptides and oligonucleotides. This method is well suited for the preparation of peptide–oligonucleotide conjugates containing 1,2,3-triazole linkage between the
Dendritic DNA molecules, referred to as DNAdendrons, consist of multiple covalently linked strands and are expected to improve the cellular uptake and potency of therapeutic oligonucleotides because of their multivalency. In this study, we developed an efficient synthetic method for producing DNAdendrons using strain-promoted azide–alkyne cycloaddition. Integration of the antitumor aptamer AS1411
树突状 DNA 分子(称为 DNA 树突)由多个共价连接的链组成,由于其多价性,有望提高治疗性寡核苷酸的细胞摄取和效力。在这项研究中,我们开发了一种利用菌株促进的叠氮-炔环加成反应生产 DNA 树枝的有效合成方法。将抗肿瘤适体 AS1411 整合到 DNA 树突中可增强癌细胞的细胞摄取和抗增殖活性。这些发现表明,将多价适体掺入DNA树突中可以有效增强其治疗效果。
GLYCOCLUSTERS AND THEIR PHARMACEUTICAL USE AS ANTIBACTERIALS