1-((1S,3R,4S)-3-hydroxy-4-(hydroxymethyl)cyclopentyl)-5-iodopyrimidine-2,4(1H,3H)-dione

(-)-1-<(1S,3R,4S)-3-hydroxy-4-(hydroxymethyl)cyclopentyl>-5-<(E)-2-carbomethoxyvinyl>-1H,3H-pyrimidine-2,4-dione

(E)-3-[1-((1S,3R,4S)-3-Hydroxy-4-hydroxymethyl-cyclopentyl)-2,4-dioxo-1,2,3,4-tetrahydro-pyrimidin-5-yl]-acrylic acid