ethyl 2-(bromomethyl)-6,6-dimethyl-3-oxocyclohex-1-ene-1-carboxylate

ethyl 1-methoxycarbonyl-7-methyl-1,4-dioxo-2,3,3a,4,5,6-hexahydroinden-2-ylacetate

(E)-3,7-二甲基-2,6-辛二烯醛

香叶酸

2,6,6-三甲基环己-2-烯-1-羧酸