2′-O-Modified ribosyl nucleosides and modified methods containing such nucleosidic monomers are disclosed. Methods are disclosed that have increased binding affinity as shown by molecular modeling experiments. Methods are also disclosed for enhancing the renal uptake of oligomeric compounds as shown using a two-step HRP imunohistochemistry assay. The 2′-O-modified nucleosides of the invention include ring structures that position the sugar moiety of the nucleosides preferentially in 3′ endo geometries.
本发明揭示了包含2'-O-修饰
核糖核苷和含有这种核苷单体的修饰方法。通过分子建模实验证明,所述方法具有增强的结合亲和力。还揭示了一种方法,用于通过使用两步酶联免疫组织
化学检测法显示增强寡聚化合物的肾脏摄取。本发明的2'-O-修饰核苷包括环结构,将核苷的糖基团体优先定位在3'-内部几何构型中。