1-((1R,2S,3R)-2,3-isopropylidenedioxy-4-methoxymethyloxymethyl-4-cyclopenten-1-yl)-4-methylthio-2(1H)-pyrimidinone

1-((1R,2S,3R)-2,3-isopropylidenedioxy-4-methoxymethyloxymethyl-4-cyclopenten-1-yl)-2-oxo-4-thioxo-(1H,3H)-pyrimidine

1-[(1R,2S,3R)-2,3-diacetoxy-4-acetoxymethyl-4-cyclopenten-1-yl]-2,4-(1H,3H)-pyrimidinedione

1-[(1R,2S,3R)-2,3-diacetoxy-4-acetoxymethyl-4-cyclopenten-1-yl]-4-thio-2,4-(1H,3H)-pyrimidinedione