7-bromochromeno[2,3-b]pyridin-5-one

Methyl 2-(p-anisidino)-nicotinic acid

tert-butyl 2'-oxo-1',2'-dihydro-1H-spiro[piperidine-4,3'-pyrrolo[2,3-b]pyridine]-1-carboxylate

2-(2,5-difluorobenzyl)nicotinic acid

2-(3-nitroanilino)-3-aminomethylpyridine