1-((1R,4R,5S)-4,5-dihydroxy-3-(hydroxymethyl)cyclopent-2-en-1-yl)-4-(methylthio)pyrimidin-2(1H)-one

(1R,4R,5S)-1-[3-[(benzyloxy)methyl]-4,5-(isopropylidenedioxy)-2-cyclopentenyl]cytosine

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

(1'R,2'S,3'R)-1-[2,3-(isopropylidenedioxy)-4-(tert-butoxymethyl)-4-cyclopenten-1-yl]cytosine

(+)-(3As,6as)-3a,6a-二氢-2,2-二甲基-4H-环戊并-1,3-二氧代-4-酮