Methanesulfonic acid (1R,2R,3S,4S)-2-(tert-butyl-diphenyl-silanyloxymethyl)-3-fluoro-4-(5-methyl-2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-cyclopentyl ester 在
sodium azide 作用下,
以
二甲基亚砜 为溶剂,
反应 1.5h,
以92%的产率得到1-[(1S,2S,3S,4S)-4-Azido-3-(tert-butyl-diphenyl-silanyloxymethyl)-2-fluoro-cyclopentyl]-5-methyl-1H-pyrimidine-2,4-dione