[(2R,3S,5R)-2-[[tert-butyl(dimethyl)silyl]oxymethyl]-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-3-yl] 2,2,2-trifluoroethanesulfonate 在
tetrabutylammonium selenocyanate 作用下,
以
氯仿 为溶剂,
反应 24.0h,
以68%的产率得到5'-O-(t-butyldimethylsilyl)-2,3'-anhydro-1-(2'-deoxy-β-D-threo-pentofuranosyl)thymine