3'-O-acetylthymidine 、
5'-O-DMT-thymidine-3'-(2-picoline)thiophosphate 在
N-甲基咪唑 、
苯甲基-2-磺酰三硝基三氮唑 作用下,
以
吡啶 为溶剂,
反应 1.0h,
以86.5%的产率得到[(2R,3S,5R)-2-[[[(2R,3S,5R)-2-[[bis(4-methoxyphenyl)-phenylmethoxy]methyl]-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-3-yl]oxy-(pyridin-2-ylmethylsulfanyl)phosphoryl]oxymethyl]-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-3-yl] acetate