3-羟基-2,6-二甲基吡喃-4-酮

2-(azidomethyl)-5-hydroxypyran-4-one

5-hydroxy-2-(phenothiazin-10-ylmethyl)pyran-4-one

(5-hydroxy-4-oxopyran-2-yl)methyl benzoate

5-hydroxy-2-(octylsulfanylmethyl)pyran-4-one