2-(3,4-dimethoxyphenyl)-7-hydroxy-5-methylchromen-4-one

2-(3,4-dimethoxyphenyl)-5-hydroxy-7-methylchromen-4-one

3-(3,4-二甲氧基苯基)-4,5-二氢-1H-吡唑-5-酮

4-(3,4-dimethoxyphenyl)-7-hydroxychromen-2-one

3-(3,4-dimethoxyphenyl)-4H-1,2-oxazol-5-one