5-cyclohexylidene-2,2-dimethyl-1,3-dioxane-4,6-dione

5-环己基-2,2-二甲基-1,3-二恶烷-4,6-二酮

6,6-dimethyl-2-phenyl-5,7-dioxaspiro[2.5]octane-4,8-dione

6-乙基-4-羟基-2H-吡喃-2-酮

1,5-二氧杂螺[5.5]十一烷-2,4-二酮