(1S,4R,5S)-1-(2-fluoro-4,5-dihydroxy-3-hydroxymethyl-cyclopent-2-enyl)-1H-pyrimidine-2,4-dione

(3aS,4R,6aR)-5-fluoro-2,2-dimethyl-6-((trityloxy)methyl)-4,6a-dihydro-3aH-cyclopenta[d][1,3]dioxol-4-ol

(3R,4S,6aR)-3-benzoyl-1-(5-fluoro-2,2-dimethyl-6-trityloxymethyl-4,6a-dihydro-3aH-cyclopenta[1,3]dioxol-4-yl)-1H-pyrimidine-2,4-dione