201324645(3aR,4S,5R,6aS)-4-(hydroxymethyl)-5-triethylsilyloxy-3,3a,4,5,6,6a-hexahydrocyclopenta[b]furan-2-one

201324646(3aR,4S,5R,6aS)-4-(hydroxymethyl)-5-(oxan-2-yloxy)-3,3a,4,5,6,6a-hexahydrocyclopenta[b]furan-2-one

201324647(3aR,6aS)-3,3a,6,6a-tetrahydrocyclopenta[b]furan-2-one

201324648(3aS,4R,5S,6aR)-2-oxo-4-(phenylmethoxymethyl)-3,3a,4,5,6,6a-hexahydrocyclopenta[b]furan-5-yl-4-phenyl

201324649(1S,2S,4R,6S)-3,7-dioxatricyclo[4.3.0.02,4]nonan-8-one

201324650(3aS,4R,5S,6aR)-5-phenylmethoxy-4-(phenylmethoxymethyl)-3,3a,4,5,6,6a-hexahydrocyclopenta[b]furan-2-o

201324651(1R,5S)-bicyclo[3.2.0]hept-2-en-6-one

201324652(3aS,6aR)-3,3a,6,6a-tetrahydrocyclopenta[b]furan-2-one

201324653(1S,2R,3aR,6aS)-1-(hydroxymethyl)-5-oxo-2,3,3a,4,6,6a-hexahydro-1H-pentalen-2-yl-benzoate

201324654(1R,2R,4S,6R)-3,7-dioxatricyclo[4.3.0.02,4]nonan-8-one

201324655(3aR,4R,5R,6aS)-2-oxo-4-[(E)-3-oxo-5-phenylpent-1-enyl]-3,3a,4,5,6,6a-hexahydrocyclopenta[b]furan-5-y

201324656(1S,5R)-bicyclo[3.2.0]hept-2-en-6-one