Efficient Divergent Synthesis of 2′-<i>O</i>,4′-<i>C</i>-Ethylene-Bridged Nucleic Acid (ENA) Phosphoramidites
作者:Yuzo Abe、Kazutoshi Ukai、Makoto Michida
DOI:10.1021/acs.oprd.2c00013
日期:2022.4.15
developed a highly efficient synthetic method for ENA phosphoramidites. The basic concept of the new synthetic route is “divergent synthesis” for the preparation of four types of monomers such as A, G, C, and T. We applied stereoselective glycosylation reactions without utilizing neighboring group participation to set a common intermediate in the downstream of the route.
2'- O ,4'- C-乙烯桥连核酸(ENA)亚磷酰胺是第一三共发现的极具前景的修饰核酸单体。为了提高生产效率,我们开发了一种高效的 ENA 亚磷酰胺合成方法。新合成路线的基本概念是“发散合成”,用于制备 A、G、C 和 T 四种单体。我们应用立体选择性糖基化反应,不利用相邻基团参与,在下游设置共同的中间体的路线。