ethyl 8-methyl-1,4-dioxaspiro[4.5]dec-7-ene-7-carboxylate

ethyl 2-methyl-5-oxocyclohexene-1-carboxylate

5-(tert-Butyl-dimethyl-silanyloxy)-5-((Z)-hex-3-ene-1,5-diynyl)-2-methyl-cyclohex-1-enecarbaldehyde

[5-(tert-Butyl-dimethyl-silanyloxy)-5-((Z)-6-iodo-hex-3-ene-1,5-diynyl)-2-methyl-cyclohex-1-enyl]-methanol

[5-(tert-Butyl-dimethyl-silanyloxy)-2-methyl-5-((Z)-6-triisopropylsilanyl-hex-3-ene-1,5-diynyl)-cyclohex-1-enyl]-methanol