2-chlorophenyl 4-O-(2,4-dimethylphenyl)-2'-O-<1-(2-fluorophenyl)-4-methoxypiperidin-4-yl>-5'-O-(9-phenylxanthen-9-yl)uridin-3'-yl hydrogen phosphate triethylammonium salt 、
2',3'-di-O-acetyl-4-O-(2,4-dimethylphenyl)uridine 在
N-甲基咪唑 、
2,4,6-三甲基苯磺酰氯 、
3-硝基-1,2,4-三氮唑 作用下,
以
吡啶 、
乙腈 为溶剂,
反应 0.75h,
以94.2%的产率得到2-chlorophenyl-2',3'-di-O-acetyl-4-O-(2,4-dimethylphenyl)uridin-5'-yl 4'-O-(2,4-dimethylphenyl)-2'-O-<1-(2-fluorophenyl)-4-methoxypiperidin-4-yl>-5'-O-(9-phenylxanthen-9-yl)uridin-3'-yl phosphate