4-methoxy-6-vinyl-2H-pyran-2-one

(+)-deoxyradicinin

6-[(1E)-2-(3,4-二甲氧基苯基)乙烯基]-4-甲氧基-2H-吡喃-2-酮

(E)-6-(2,4-dimethoxystyryl)-4-methoxy-2H-pyran-2-one

(E)-6-(4-fluorostyryl)-4-methoxy-2H-pyran-2-one