Method for synthesizing ribonucleic acid H-phosphonate monomer, and oligonucleotide synthesis in which said monomer is used
申请人:GeneDesign, Inc.
公开号:US11174279B2
公开(公告)日:2021-11-16
The present invention pertains to a method for synthesizing a ribonucleic acid H-phosphonate monomer, and a method for performing oligonucleotide synthesis in which said monomer is used. The present invention pertains to a method for manufacturing an inexpensively manufacturable H-phosphonate nucleoside derivative in which selective protection is provided to position 2′ of a ribonucleoside monomer required in RNA oligonucleotide synthesis. The present invention is characterized in that: hydroxyl groups in position 2′ and position 3′, which have slightly different reactivity, are caused to react with an aromatic acyl halide at low temperature to selectively esterify position 2′; and subsequently the hydroxyl group at position 3′ in one pot is captured by a phosphityl group to prevent position 2′ and position 3′ transfer of the acyl group.
本发明涉及一种合成核糖核酸 H-膦酸盐单体的方法,以及使用所述单体进行寡核苷酸合成的方法。本发明涉及一种可廉价制造的 H-膦酸核苷衍生物的制造方法,其中对 RNA 寡核苷酸合成中所需的核糖核苷单体的 2′位提供选择性保护。本发明的特点是:使反应活性略有不同的位置 2′和位置 3′上的羟基在低温下与芳香酰基卤化物反应,选择性地酯化位置 2′;然后用磷酸基俘获一锅中位置 3′上的羟基,以防止位置 2′和位置 3′上的酰基转移。