3,4-dihydro-2,2,5,7,8-pentamethyl-6-hydroxy-2H-1-benzopyran-4-one

6-hydroxy-5,7,8-trimethyl-3,4-dihydrochromen-2-one

3-甲基巴豆酰氯

1-溴-3-甲基-2-丁烯