5-Amino-7-benzyl-2-chloro-6,7,8,9-tetrahydropyrido[2,3-b][1,6]naphthyridine-3-carbonitrile
2-Chloro-4-(4-methoxyphenyl)pyrido[2,3-b]pyrazin-3(4h)-one
2-Chloro-4-(4-chlorophenyl)pyrido[2,3-b]pyrazin-3(4h)-one
2,4-Dichloro-8-(4-fluorophenyl)-6-methyl-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidine