4-Methyl-benzoic acid (2R,3S,5R)-2-[bis-(4-methoxy-phenyl)-phenyl-methoxymethyl]-5-[5-iodo-3-(4-methyl-benzoyl)-2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl]-tetrahydro-furan-3-yl ester 在
bis-triphenylphosphine-palladium(II) chloride 、
ammonium hydroxide 、
silver(l) oxide 作用下,
以
1,4-二氧六环 、
N,N-二甲基甲酰胺 为溶剂,
反应 96.0h,
生成
5-<1-(N,N-dimethylsulfamoyl)imidazol-2-yl>-5'-O-(dimethoxytrityl)-2'-deoxyuridine