作者:B. S. Ross、R. H. Springer、G. Vasquez、R. S. Andrews、P. D. Cook、O. L. Acevedo
DOI:10.1002/jhet.5570310412
日期:1994.7
A convergent and general approach to synthesizing 2′-O-Methylpyrimidine ribonucleosides 4a-e, 6,7 on a multigram scale is described which begins with an improved procedure for making larger quantities of 2-O-methyl-1,3,5-tri-O-benzoyl-α-D-ribose. The sugar was reacted with the desired silylated pyrimidines at room temperature under Vorbrüggen conditions. The crude products contained less than 10% of
会聚和一般方法合成2'- ö -Methylpyrimidine核糖核苷4A-E,6,7上的多克规模,描述了具有改进的过程开始用于制备更大量的2- ö甲基- 1,3,5-三-O-苯甲酰基-α-D-核糖。在室温下在Vorbrüggen条件下使糖与所需的甲硅烷基化的嘧啶反应。粗产物包含少于10%的α端基异构体,并且期望的β端基异构体通过结晶分离。然后通过标准方法将保护的核苷脱保护并分离。