ethyl (Z)-2-((((3aS,4R,6aR)-6-((benzyloxy)methyl)-2,2-dimethyl-3a,6a-dihydro-4H-cyclopenta[d][1,3]dioxol-4-yl)carbamoyl)carbamoyl)-3-ethoxyacrylate

(-)-N-[[[(1R,4R,5S)-3-[(benzyloxy)methyl]-4,5-(isopropylidenedioxy)-2-cyclopentenyl]amino]carbonyl]-3-ethoxy-2-propenamide

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

(1R,2S,3R)-1-(N-(3-ethoxyacryloyl)ureido)-2,3-isopropylidenedioxy-4-methoxymethyloxymethyl-4-cyclopentene

环戊烯基尿嘧啶