Phosphoric acid (2R,3S,5R)-5-(2-benzoylamino-6-oxo-1,6-dihydro-purin-9-yl)-2-[(4-methoxy-phenyl)-diphenyl-methoxymethyl]-tetrahydro-furan-3-yl ester 4-chloro-phenyl ester 在
N-甲基咪唑 、 triisopropylbenzenesulfochloride 作用下,
以
吡啶 、
二氯甲烷 、
三氟乙酸 为溶剂,
反应 0.2h,
生成 Phosphoric acid (2S,3S,5R)-3-azido-5-(5-methyl-2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-tetrahydro-furan-2-ylmethyl ester (2R,3S,5R)-5-(2-benzoylamino-6-oxo-1,6-dihydro-purin-9-yl)-2-hydroxymethyl-tetrahydro-furan-3-yl ester 4-chloro-phenyl ester