p. 1687 - 1694
(2007/10/02)(Z)-2-[3-((3aS,4R,6aR)-6-Benzyloxymethyl-2,2-dimethyl-4,6a-dihydro-3aH-cyclopenta[1,3]dioxol-4-yl)-ureidocarbonyl]-3-ethoxy-acrylic acid ethyl ester
ethyl 3-ethoxy-2-<<(ethoxycarbonyl)amino>carbonyl>-2-propenoate
(1R,4R,5S)-(-)-1-amino-3-<(benzyloxy)methyl>-4,5-O-isopropylidene-2-cyclopentene
(1R,4R,5S)-(-)-1-<3-<(benzyloxy)methyl>-4,5-(isopropylidenedioxy)-2-cyclopentenyl>-5-(ethoxycarbonyl)uracil
cyclopentenyl cytosine
(1R,4R,5S)-(-)-1-<3-<(benzyloxy)methyl>-4,5-(isopropylidenedioxy)-2-cyclopentenyl>-4-thioxouracil
(1R,4R,5S)-1-<3-<(benzyloxy)methyl>-4,5-(isopropylidenedioxy)-2-cyclopentenyl>cytosine
1-((3aS,4R,6aR)-6-Benzyloxymethyl-2,2-dimethyl-4,6a-dihydro-3aH-cyclopenta[1,3]dioxol-4-yl)-4-methylsulfanyl-1H-pyrimidin-2-one
(1R,4R,5S)-(-)-1-<3-<(benzyloxy)methyl>-4,5-(isopropylidenedioxy)-2-cyclopentenyl>uracil