3,6-dimethyl-2-(4-methylphenyl)pyrano[4,3-c]pyrazol-4-one

3-(1,3-dithian-2-yl)-4-methoxy-6-methylpyran-2-one

甲氧醉椒素

6-[2-(3,4-dimethoxyphenyl)ethenyl]-4-methoxypyran-2-one

3-(2-溴乙酰基)-4-羟基-6-甲基-2H-吡喃-2-酮