For large scale preparation of pyrimidine ribonucleosides, the intermediate 2-O-methyl-(or ethyl)-1,3,5-tri-O-benzoyl-.alpha.-D-ribose can be prepared using a diazomethane (or diazoethane) reaction that is controlled via an inert solvent transferring system. This transfer system allows for large scale preparations of the pyrimidine ribonucleosides.
为了大规模制备
嘧啶核苷,可以使用通过惰性溶剂转移系统控制的
重氮甲烷(或
重氮乙烷)反应来制备中间体2-O-甲基(或乙基)-1,3,5-三-O-苯甲酰-.alpha.-
D-核糖。这种转移系统可以实现
嘧啶核苷的大规模制备。