2,3,4,4a,5,11-hexahydro-6H-pyrido[2,3-b][1,4]benzodiazepin-6-one

2-amino-N-(2-oxopiperidin-3-yl)benzamide

邻硝基苯甲酸

2-氯-3-(2-硝基苯甲酰氨基)吡啶

2-硝基苯甲酰氯