Methyl (1R,5S,6R,7R)-6-(3-Cyclopentyl-3-oxo-E-1-propenyl)-7-tetrahydropyranyloxybicyclo(3.3.0)oct-2-ene-3-γ-pentenoate

Methyl (1R,5S,6R,7R)-7-tert-Butyldimethylsilyloxy-6-(3(R)-tert-butyldimethylsilyloxy-3-cyclopentyl-E-1-propenyl)bicyclo(3.3.0)oct-2-ene-3-γ-pentenoate

Methyl (1R,5S,6R,7R)-6-<3(R)-Cyclopentyl-3-hydroxy-E-1-propenyl>-7-hydroxybicyclo<3.3.0>oct-2-ene-3-γ-pentenoate

Methyl (1S,5S,6R,7R)-7-tert-Butyldimethylsilyloxy-6-(3(R)-tert-butyldimethylsilyloxy-3-cyclopentyl-E-1-propenyl)bicyclo(3.3.0)octane-E-Δ3,δ-pentanoate