3,3'-O,N-dibenzoylthymidine 、 triethylammonium S-phenyl 5'-O-(4,4'-dimethoxytrityl)-3-N-benzoylthymidine 3'-phosphorothioate 在
Trichlorobis(2,4,6-tribromophenoxy)phosphorane 、
3-硝基-1,2,4-三氮唑 作用下,
以
吡啶 为溶剂,
反应 0.2h,
以93%的产率得到[(2R,3S,5R)-5-(3-benzoyl-5-methyl-2,4-dioxopyrimidin-1-yl)-2-[[[(2R,3S,5R)-5-(3-benzoyl-5-methyl-2,4-dioxopyrimidin-1-yl)-2-[[bis(4-methoxyphenyl)-phenylmethoxy]methyl]oxolan-3-yl]oxy-phenylsulfanylphosphoryl]oxymethyl]oxolan-3-yl] benzoate