3-(2'-boc-glycinyl-4',6'-dimethylphenyl)-3,3-dimethylpropionic acid 、
阿糖胞苷 在
ethylene dichloride hydrochloride 、
1-羟基苯并三唑 作用下,
以
吡啶 为溶剂,
以36%的产率得到2-(4-((1-((2R,3S,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)-2-oxo-1,2-dihydropyrimidin-4-yl)amino)-2-methyl-4-oxobutan-2-yl)-3,5-dimethylphenyl (tert-butoxycarbonyl)glycinate