The present invention relates to the field of stereodefined phosphorothioate oligonucleotides and to stereodefining nucleoside monomers and methods of synthesis of stereodefined oligonucleotides using said monomer. Herein are disclosed oligonucleotide enhanced synthesis methods where within a single elongation cycle there are repeated coupling and oxidation steps. The method results in an enhanced yield and higher purity of stereodefined phosphorothioate oligonucleotides
本发明涉及立体定义的
磷硫酸酯寡核苷酸领域,以及立体定义的核苷酸单体和使用该单体合成立体定义的寡核苷酸的方法。本文公开了寡核苷酸增强合成方法,在单个延伸周期内重复耦合和氧化步骤。该方法可提高立体定义的
磷硫酸酯寡核苷酸的产量和纯度。