3'-O-acetyl-4-O-phenylthymidine 、 4-O-phenyl-5'-O-(9-phenylxanthen-9-yl)thymidin-3'-yl 2-chlorophenyl hydrogen phosphate triethylammonium salt 在
N-甲基咪唑 、 TrisCl 、
3-硝基-1,2,4-三氮唑 作用下,
以
吡啶 为溶剂,
反应 1.0h,
以96.2%的产率得到4-O-phenyl-5'-O-(9-phenylxanthen-9-yl)thymidin-3'-yl 3'-O-acetyl-4-O-phenylthymidin-5'yl 2-chlorophenylphosphate