An approach to metal-assisted DNA base pairing: novel β-C-nucleosides with a 2-aminophenol or a catechol as the nucleobase
作者:Kentaro Tanaka、Motoyuki Tasaka、Honghua Cao、Mitsuhiko Shionoya
DOI:10.1016/s0928-0987(00)00210-4
日期:2001.4
coordination in the base pairing, thereby creating a novel hybridization motif in duplex DNA. In this regard, we have further designed two types of artificial beta-C-nucleosides possessing a metal-chelating site (a 2-aminophenol or a catechol) as the nucleobase moiety. These artificial nucleosides are directed toward controlling the net charges of the metal-assisted base pairs. This paper describes
先前发现,具有苯二胺部分作为核碱基的金属螯合β-C-核苷可与Pd(2+)离子在水性介质中形成稳定的2:1络合物,其中氢键被碱中的金属配位取代配对,从而在双链体DNA中产生新的杂交基序。在这方面,我们进一步设计了两种具有金属螯合位点(2-氨基苯酚或邻苯二酚)作为核碱基部分的人工β-C-核苷。这些人工核苷旨在控制金属辅助碱基对的净电荷。本文描述了带有2-氨基苯酚或邻苯二酚部分的人工核苷的便捷合成方法。每个核苷通过2'直接合成