11-(chloromethyl)-5,6-dimethylpyrido[4,3-b]carbazole

11-butyl-5,6-dimethylpyrido[4,3-b]carbazole

11-benzyl-5,6-dimethylpyrido[4,3-b]carbazole

5,6-dimethyl-11-phenylpyrido[4,3-b]carbazole

4-(1-methylindol-3-yl)butan-2-one