Methods for the regioselective alkylation at the 2′-hydroxy position over the 3′-hydroxy position of nucleosides and nucleoside analogs, forming 2′-O-ester modified compounds, are disclosed. Reduction and derivatization of the 2′-O-ester provides 2′-O-modified nucleosides and nucleoside analogs useful for the synthesis of oligomeric compounds having improved hybridization affinity and nuclease resistance.
本文揭示了在核苷和核苷类似物的2'-羟基位置上进行区域选择性烷基化的方法,而不是在3'-羟基位置上进行烷基化,形成2'-O-酯修饰化合物。对2'-O-酯的还原和衍生化提供了有用的2'-O-修饰核苷和核苷类似物,用于合成具有改善的杂交亲和力和
核酸酶抵抗力的寡聚物化合物。