A facile and simple entry into isodideoxynucleosides
作者:Angshuman Chattopadhyay、Avinash Salaskar
DOI:10.1039/b109785g
日期:2002.3.8
Sharpless asymmetric dihydroxylations of homoallylic alcohol derivative 3 with AD mix-α afforded α addition product 4a predominantly. Compound 4a was produced with very high selectivity when 3 was treated with AD mix-β. The inherent hydroxylic functionalities of 4a were judiciously exploited to develop a simple and efficient synthesis of (3′S,5′S)-isodideoxynucleosides. I and II are two representative target molecules for our synthesis in this regard.
同烯丙基醇衍生物 3 与 AD 混合-α 进行无水非对称二羟基化反应,主要得到α加成产物 4a。当 3 用 AD 混合-β 处理时,化合物 4a 具有非常高的选择性。4a 固有的羟基官能团被巧妙地用于开发一种简单有效的 (3′S,5′S)-异二脱氧核苷合成方法。I 和 II 是我们在这一方面合成的两个代表性目标分子。