Acetic acid (2R,3R,4R,5R)-4-(tert-butyl-dimethyl-silanyloxy)-5-(5-chloro-2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-3-chloromethoxy-tetrahydro-furan-2-ylmethyl ester 在
叠氮化锂 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
反应 0.5h,
以231 mg的产率得到5'-O-acetyl-3'-O-azidomethyl-2'-O-tert-butyldimethylsilyl-5-chlorouridine