Preparation of ribavirin analogues by copper- and ruthenium-catalyzed azide-alkyne 1,3-dipolar cycloaddition
作者:Ugo Pradere、Vincent Roy、Tamara R. McBrayer、Raymond F. Schinazi、Luigi A. Agrofoglio
DOI:10.1016/j.tet.2008.07.007
日期:2008.9
synthesis of 1,4- and 1,5-disubstituted-1,2,3-triazolo-nucleosides from various alkynes with 1′-azido-2′,3′,5′-tri-O-acetylribose using either copper-catalyzed azide-alkyne cycloaddition (CuAAC) or ruthenium-catalyzed azide-alkyne cycloaddition (RuAAC), respectively. Optimized RuAAC conditions were realized with the commercially available [Cp∗RuCl(PPh3)2] under microwave heating, which allows a significant
在本研究中,我们描述了从各种炔烃与 1'-叠氮基-2',3',5'-三-O 合成 1,4- 和 1,5-二取代-1,2,3-三唑核苷-乙酰核糖分别使用铜催化的叠氮-炔环加成(CuAAC)或钌催化的叠氮-炔环加成(RuAAC)。在微波加热下,使用市售的 [Cp * RuCl(PPh 3 ) 2 ]实现了优化的 RuAAC 条件,这使得反应时间显着缩短(从 6 小时缩短到 5 分钟)。该反应可在含水体系下进行。RuAAC 和 CuAAC 是合成 1,2,3-三唑基核苷小库的有用工具。