(1R,4R,5S)-(-)-1-<3-<(benzyloxy)methyl>-4,5-(isopropylidenedioxy)-2-cyclopentenyl>-5-(ethoxycarbonyl)uracil 在
sodium tetrahydroborate 作用下,
以
乙醇 为溶剂,
反应 0.17h,
以74%的产率得到1-((3aS,4R,6aR)-6-Benzyloxymethyl-2,2-dimethyl-4,6a-dihydro-3aH-cyclopenta[1,3]dioxol-4-yl)-2,4-dioxo-hexahydro-pyrimidine-5-carboxylic acid ethyl ester