4-hydroxy-2-methyl-3-oxo-2-(3-oxopentyl)butanoic acid γ-lactone

(1S,6S)-(+)-4-[(4R,E)-5-tert-butyldiphenylsilyloxy-4-methyl-2-pentenyloxy]-1,5-dimethyl-6-hydroxy-9-oxo-8-oxabicyclo[4.3.0]non-4(5)-ene

(7aS)-5-hydroxy-4,7a-dimethyl-5,6,7,7a-tetrahydroisobenzofuran-1(3H)-one

(1aS,4aS,7aS)-2-hydroxy-1a,4a-dimethyltetrahydro-7H-oxireno[2,3-d]isobenzofuran-5(1aH)-one

1,3-Dimethyl-2-[(1E,3E)-3-methyl-6-(2-methyl-[1,3]dioxolan-2-yl)-hexa-1,3-dienyl]-4-oxo-cyclohex-2-enecarboxylic acid methyl ester

3-hydroxy-4,7a-dimethyl-6,7-dihydro-3H-2-benzofuran-1,5-dione

(7E,9Z)-trisporic acid B

3-bromo-4,8-dimethyl-1,5-dioxo-2-oxabicyclo<4.3.0>non-4(9)-ene

(S)-5-((tert-butyldimethylsilyl)oxy)-4,7a-dimethyl-7,7a-dihydroisobenzofuran-1(6H)-one

(7aS)-4,7a-dimethyl-6,7-dihydro-3H-2-benzofuran-1,5-dione

4-oxo-1,2,3-trimethyl-2-cyclohexene-1-carboxylic acid

lactone of 1,3-dimethyl-2-hydroxymethyl-4-oxo-2-cyclohexenoic acid

4,8-dimethyl-5,5-(ethylenedioxy)-3-oxo-2-oxabicyclo<4.3.0>non-4(9)-ene

(7E,9E)-trisporic acid A

1,1-(ethylenedioxy)-2,4-dimethyl-3,4-bis(hydroxymethyl)-2-cyclohexene

(1S,6S)-1,5-dimethyl-4-(dimethyl-tert-butylsilyloxy)-6-hydroxy-9-oxo-8-oxabicyclo[4.3.0]non-4(5)-ene

4,8-dimethyl-5,5-(ethylenedioxy)-1-oxo-2-oxabicyclo<4.3.0>non-4(9)-ene