The synthesis of a new ribonucleoside analogue, which combines two modifications, namely a 2′-aminoethoxy side-chain on the ribose and a 5-methyl-1H-pyrimidin-2-one (4HT) unit as a base replacement, is presented. This building block was incorporated into triplex forming oligonucleotides and the binding properties to CG inversion sites in DNA duplex targets were studied. The data clearly show that the
一种新的
核糖核苷类似物的合成,该类似物结合了两个修饰,即
核糖上的2'-
氨基乙氧基侧链和作为碱基替代的5-甲基-1 H-
嘧啶-2-一(4H T)单元。提出了。将此构建单元掺入形成三链体的寡核苷酸中,并研究了其与DNA双链体靶标中CG转化位点的结合特性。数据清楚地表明4H T碱基选择性识别CG碱基对,而
氨基乙氧基链增加了三螺旋的整体稳定性。