1-acetyl-6-fluoro-3H-indol-2-one

1-acetyl-6-chloro-3H-indol-2-one

1-acetyl-1,3-diazinane-2,4-dione

1-(5-acetylquinoxalino[2,3-b]quinoxalin-12-yl)ethanone

3,5,7-trimethyl-[1,2]oxazolo[3,4-d]pyrimidine-4,6-dione