Oxalic acid (2R,3R,4S,5R)-2-benzoyloxymethyl-4-(tert-butyl-dimethyl-silanyloxy)-3-(diethoxy-phosphoryl)-5-(2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-tetrahydro-furan-3-yl ester methyl ester 在
偶氮二异丁腈 、
三正丁基氢锡 作用下,
以
甲苯 为溶剂,
反应 2.0h,
生成 5'-O-benzoyl-3'α-diethylphosphono-3'-deoxy-2'-O-tert-butyldimethylsilyluridine 、
5'-O-benzoyl-3'β-diethylphosphono-3'-deoxy-2'-O-tert-butyldimethylsilyluridine