A solid-supported acidic oxazolium perchlorate was investigated as a heterogeneous catalyst in N-glycosylation reactions using silylated modified pyrimidines and an acylated ribose or glucose to afford the corresponding pyrimidine nucleosides. This salt is a nonhygroscopic and stable powder whose activity is comparable to that of 2-methyl-5-phenylbenzoxazolium perchlorate. A reaction with this polymer
研究了固体负载的酸性
高氯酸恶唑鎓盐在N-糖基化反应中的非均相催化剂,该反应使用甲
硅烷基化的修饰的
嘧啶和酰化的
核糖或
葡萄糖得到相应的
嘧啶核苷。该盐是非吸湿性和稳定粉末,其活性与
高氯酸2-甲基-5-苯基
苯并恶唑鎓的活性相当。与该聚合物催化剂的反应可以以克为单位进行。还研究了固体负载催化剂的可重复使用性。