3-(3,5,5,8,8-pentamethyl-5,6,7,8-tetrahydro-2-naphthyl)benzaldehyde 、
3-甲基-4-膦酰丁烯酸三乙酯 以1.80 g (66%) of the expected compound was obtained in the form of a white powder的产率得到3-methyl-5-[3-(3,5,5,8,8-pentamethyl-5,6,7,8-tetrahydro-2-naphthyl)phenyl]penta-2,4-dienoic acid