2,3-丁二酮 、
5'-O-(3'-O-acetylthymidyl) 3'-O-(5'-O-trityl-1',2'-dideoxyribosyl) methyl phosphite 生成 [(2R,3S,5R)-2-[[2-methoxy-4,5-dimethyl-2-[(2R,3S)-2-(trityloxymethyl)oxolan-3-yl]oxy-1,3,2λ5-dioxaphosphol-2-yl]oxymethyl]-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-3-yl] acetate