1-苄基-3,4-二氢-1H-吡啶-2-酮

N-苄基-4-甲基-3-吡咯啉-2-酮

4-methylidene-1H-isochromen-3-one

1,6,7,8,9,9a-hexahydropyrido[2,1-c][1,4]oxazine-3,4-dione

2,5-二甲氧基-5-甲基四氢-3-呋喃甲醛