2-Phenylsulfonylethylchloroformate (PSEC) 、
Carbonic acid (2R,3S,5R)-2-hydroxymethyl-5-(5-methyl-2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-tetrahydro-furan-3-yl ester 2-trimethylsilanyl-ethyl ester 以
吡啶 为溶剂,
反应 0.5h,
以88%的产率得到Carbonic acid (2R,3S,5R)-2-(2-benzenesulfonyl-ethoxycarbonyloxymethyl)-5-(5-methyl-2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-tetrahydro-furan-3-yl ester 2-trimethylsilanyl-ethyl ester