6-oxo-4,5,9,10-tetrahydro-6H,8H-pyrido[3,2,1-ij][1,6]naphthyridine

3,5-bis(3-bromopropyl)pyridin-4-amine

4-氨基吡啶

8-溴-1,6-萘啶

4-氨基-3,5-二溴吡啶