methyl 3-<4-hydroxy-5-(4-hydroxycinnamoyl)-2-methoxy-3,3-dimethyl-6-oxo-1,4-cyclohexadienyl>-3-(4-hydroxyphenyl)propanoate 在
盐酸 作用下,
以
甲醇 、
丙酮 为溶剂,
反应 0.83h,
以60%的产率得到7-hydroxy-2-(4-hydroxyphenyl)-6-<1-(4-hydroxyphenyl)-2-methoxycarbonylethyl>-8,8-dimethyl-3,4-dihydro-2H-1-benzopyran-4,5(8H)-dione