(E)-4-(1,5,5-trimethyl-7-oxabicyclo[4.1.0]heptan-6-yl)but-3-en-2-one

(E)-2,4,4-Trimethyl-3-(3-oxo-1-butenyl)cyclohex-2-en-1-one

(E)-4-(1,2,2-Trimethyl-6-oxo-cyclohexyl)-but-3-en-2-on

4-(3-hydroxy-2,6,6-trimethylcyclohexen-1-yl)but-3-en-2-one

1-acetoxy-2-(2,6,6-trimethyl-1-cyclohexen-1-yl)-ethene