Efficient synthesis of d-[5-13C]ribose from d-ribose and its conversion into [5′-13C]nucleosides
作者:Takeshi Sekine、Etsuko Kawashima、Yoshiharu Ishido
DOI:10.1016/0040-4039(96)01770-4
日期:1996.10
An approach to the synthesis of [5-13C]ribose (6) was achieved by a sequence reaction as follows: periodate oxidation of 2,3-di-O-benzyl-d-ribose dibenzyl acetal (2), which was derived from d-ribose (1) in 70% overall yield in 8 steps, followed by the introduction of 13C into the 5-position of d-ribose by Wittig reaction using Ph3P13CH3I - BuLi, highly diastereoselective hydroxylation with OsO4, and
通过如下的顺序反应实现了[5- 13 C]核糖(6)的合成方法:高碘氧化2,3-二-O-苄基-d-核糖二苄基乙缩醛(2)。从d-核糖(1)中以8步以70%的总收率得到,然后通过使用Ph 3 P 13 CH 3 I-BuLi的Wittig反应将13 C引入d-核糖的5位,高非对映选择性羟基化反应OsO 4,然后进行脱苄基作用。具有必要的保护基和离去基团的化合物6衍生为[5'- 13C]核糖核苷衍生物通过与全硅烷基化的核碱基的偶联反应。