The Pd(0)-catalyzed coupling reaction of β-5-iodo-2′-deoxy-3′,5′-di-O-acetyluridine with various heteroaryltrimethylstannyl compounds gave the corresponding β-5-heteroaryl-2′-deoxy-3′,5′-di-O-acetyluridines in moderate yields. This direct coupling approach for nucleosides represented an interesting alternative to the 5-heteroaryl functionalization of pyrimidines followed by the Hilbert-Johnson glycosylation
Pd(0)催化的β-5-
碘-2'-脱氧-3',5'-二-O-乙酰
尿苷与各种杂芳基
三甲基锡烷基化合物的偶联反应得到相应的β-5-杂芳基-2'-脱氧- 3',5'-二-O-乙酰
尿苷,产率中等。这种直接连接核苷的方法代表了一个有趣的替代方法,可替代
嘧啶的5-杂芳基官能化,然后进行希尔伯特-约翰逊糖基化反应,该反应通常会产生α和β端基异构体的混合物。