Synthesis of [5‘-<sup>13</sup>C]Ribonucleosides and 2‘-Deoxy[5‘-<sup>13</sup>C]ribonucleosides
作者:Etsuko Kawashima、Kaoru Umabe、Takeshi Sekine
DOI:10.1021/jo016281q
日期:2002.7.1
The present efficient synthesis of [5'-13C]ribonucleosides and 2'-deoxy[5'-13C]ribonucleosides is characterized by the synthesis of the D-[5-13C]ribose derivative as an intermediate via the Wittig reaction of 4-aldehydo-D-erythrose dialkyl acetals with Ph3P13CH3I-BuLi to introduce the 13C label at the 5-position of a pentose. This was followed by the highly diastereoselective osmium dihydroxylation
当前有效的[5'-13C]核糖核苷和2'-脱氧[5'-13C]核糖核苷的合成的特征在于,通过4-的Wittig反应合成作为中间体的D- [5-13C]核糖衍生物。醛-D-赤藓糖二烷基缩醛与Ph3P13CH3I-BuLi一起在戊糖的5位引入13C标签。随后进行高度非对映选择性的二羟基os化,以制备2,3-二-O-苄基-D- [5-13C]核糖二烷基缩醛,并将D- [5-13C]核糖二烷基缩醛衍生物环化。通过使用LiBF(4)生成烷基D- [5-13C]呋喃呋喃糖苷衍生物。将获得的D- [5-13C]核糖衍生物转化为[5'-13C]核糖核苷,然后转化为相应的2'-脱氧核苷。