(4S)-2-(tert-butyldimethylsiloxymethyl)-4-hydroxy-4-(hydroxymethyl)-1,3,3-trimethyl-cyclohex-1-ene

(5S)-7-(tert-butyldimethylsiloxymethyl)-1,3-dioxa-2-oxo-6,6,8-trimethyl-spiro[4,5]dec-7-ene

3-Hydroxymethyl-2,2,4-trimethyl-cyclohex-3-enone

5,5-(ethylenedioxy)-2,,6,6-trimethyl-1-iodocyclohexene

6,6,8-trimethyl-1,4-dioxaspiro[4.5]decan-7-one hydrazone