1,5,5,9-tetramethyl-3-spiro<1,3-dithiolane>spiro<5.5>undec-1,8-diene

1,5,5-trimethylspiro[5.5]undec-1-en-9-one

cis-2,2,6-trimethyl-9,9-ethylenedioxyspiro[5.5]undecan-5-ol

7,11,11-trimethylspiro[5.5]undec-7-en-3-one ethylene acetal

1-(4-methyl-1-(2-methylbut-3-en-2-yl)cyclohex-3-en-1-yl)but-3-en-1-ol