11-ethyl-6-methyl-9-nitropyrido[3,2-c][1,5]benzodiazepin-5-one

N,N-dimethyl-2-(5-oxo-11H-pyrido[3,2-c][1,5]benzodiazepin-6-yl)acetamide

6-benzyl-11-ethyl-7-methylpyrido[3,2-c][1,5]benzodiazepin-5-one

tert-butyl 2-(5-oxo-11H-pyrido[3,2-c][1,5]benzodiazepin-6-yl)acetate

11-ethyl-6-methyl-8-nitropyrido[3,2-c][1,5]benzodiazepin-5-one