Analogues of adenosine have a range of interesting biological activities and potential therapeutic applications. A method for the efficient preparation of highly functionalized N6-substituted adenosines has been developed from the corresponding tert-butyldimethylsilyl-protected inosine. The key step in this procedure is a microwave-assisted amination reaction between an appropriately substituted inosine and an amine in the presence of PyBroP. High yields of desired N6-substituted adenosines were achieved with hindered amines and the reaction was also found to accommodate a range of substituents on the inosine precursor.
腺苷的类似物具有一系列有趣的生物活性和潜在的治疗用途。从相应的叔丁基二甲基硅基保护肌苷出发,我们开发出了一种高效制备高官能度 N6 取代腺苷的方法。该方法的关键步骤是在 PyBroP 的存在下,在适当取代的肌苷和胺之间进行微波辅助胺化反应。使用受阻胺可以获得高产率的所需 N6 取代腺苷,而且该反应还能适应肌苷前体上的一系列取代基。