Synthesis of Ribo‐Azanucleosides by Anodic Oxidation: Reactivity Control of Intermediate for Efficient Access to Pharmacophores
作者:Kazuhiro Okamoto、Takao Shoji、Mizuki Tsutsui、Naoki Shida、Kazuhiro Chiba
DOI:10.1002/chem.201804285
日期:2018.12.5
2′‐substituent has a significant effect on the reactivity of prolinol derivative, and suitable carboxylic acid additives can control the reactivity of the intermediate species, an iminium cation equivalent. Finally, this method was demonstrated to be applicable for the synthesis of β‐anomers of ribo‐azanucleosides with all four nucleobases in a stereoselective manner.
糖修饰的核苷类似物氮杂核苷具有多种生物学活性,而其有效的合成策略仍在开发中。本文报道了一种通过使用硝基烷烃-高氯酸锂介质通过位点特异性阳极CH活化来合成药学上相关的氮杂核苷,核糖氮杂核苷的β-端基异构体的新方法。从传统糖化学方法对电化学反应和武装/解除武装的概念进行的机理研究表明,2'取代基对脯氨醇衍生物的反应性具有重大影响,合适的羧酸添加剂可以控制中间体物种(亚胺)的反应性阳离子当量。最后,