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(2007/10/02)(3R,3aS,4S,6aS)-6a-Methyl-2-oxo-4-phenyl-3,3a,4,6a-tetrahydro-2H-cyclopenta[b]furan-3-carboxylic acid
(3aS,4S,6aS)-6a-Methyl-3-methylene-4-phenyl-3,3a,4,6a-tetrahydro-cyclopenta[b]furan-2-one
(3aR,4S,6aS)-6a-Methyl-4-phenyl-3,3a,4,6a-tetrahydro-cyclopenta[b]furan-2-one
(3R,3aS,4S,6aS)-6a-Methyl-2-oxo-4-phenyl-3,3a,4,6a-tetrahydro-2H-cyclopenta[b]furan-3-carboxylic acid methyl ester