6-phenylpyrrolo[3,4-b]pyridine-5,7-dione

quinolinic acid dianilide

1H-吡啶并[2,3-d][1,3]噁嗪-2,4-二酮

2H-吡啶并[3,2-D][1,3]恶嗪-2,4(1H)-二酮

3-(4-methylbenzoyl)pyridine-2-carboxylic acid