4-bromophenyl methoxy-valyl phosphorochloridate 、
N4-(N,N-dimethylformamidinyl)-2'-deoxy-2'-fluoro-2'-C-methylcytidine 在
N-甲基咪唑 作用下,
以
四氢呋喃 为溶剂,
以13%的产率得到(S)-2-{(4-bromophenoxy)-[(2R,3R,4R,5R)-5-(2-oxo-3-aminopyrimidin-1-yl)-4-fluoro-3-hydroxy-4-methyltetrahydrofuran-2-ylmethoxy]phosphorylamino}-3-methylbutyric acid methyl ester