A Family of “Click” Nucleosides for Metal‐Mediated Base Pairing: Unravelling the Principles of Highly Stabilizing Metal‐Mediated Base Pairs
作者:Tim Richters、Olga Krug、Jutta Kösters、Alexander Hepp、Jens Müller
DOI:10.1002/chem.201402221
日期:2014.6.16
metal complexes indicate that metal‐mediated base pairs of TriPyr may not be fully planar. An investigation of DNA oligonucleotide duplexes comprising the new “click” nucleosides showed that they can bind AgI to form metal‐mediated base pairs. In particular the mispair formed from TriPy and the previously established imidazole nucleoside is significantly stabilized in the presence of AgI. A comparison
通过应用Cu I催化的Huisgen 1,3-偶极环加成反应,已经开发了一系列人工核苷。从2-脱氧-β - D-糖基叠氮化物作为常见的前体开始,已合成了三个双齿核苷。参与所有三个核碱基的1,2,3-三唑辅以1,2,4-三唑(TriTri),吡唑(TriPyr)或吡啶(TriPy)互补。两种金属配合物的分子结构表明,TriPyr的金属介导的碱基对可能不是完全平面的。对包含新“点击”核苷的DNA寡核苷酸双链体的研究表明,它们可以结合Ag I形成金属介导的碱基对。特别是在Ag I的存在下,由TriPy和先前建立的咪唑核苷形成的错配显着稳定。通过比较不同的寡核苷酸序列,可以确定涉及金属介导的碱基对的核酸双链体稳定化的一般因素。