pentyl (5-fluoro-2-((trimethylsilyl)oxy)pyrimidin-4-yl)carbamate 、 [(3aR,4S,6R,6aR)-2,2,6-trimethyl-3a,4,6,6a-tetrahydrofuro[3,4-d][1,3]dioxol-4-yl] acetate 在
pentyl (5-fluoro-2-((trimethylsilyl)oxy)pyrimidin-4-yl)carbamate 作用下,
生成
5'-deoxy-2',3'-O-isopropylidene-N-[(pentyloxy)carbonyl]-5-fluorocytidine