2H-1-Benzopyran-2,5(3H)-dione,7-hydroxy-4-(4-hydroxyphenyl)-6-[3-(4-hydroxyphenyl)-1-oxo-2-propenyl]-8,8-dimethyl-, (E)- 在
sodium hydroxide 作用下,
反应 0.5h,
以58%的产率得到3-<2,4-dihydroxy-5-(4-hydroxycinnamoyl)-3,3-dimethyl-6-oxo-1,4-cyclohexadienyl>-3-(4-hydroxyphenyl)propanoic acid