tert-butyl 4-(4-oxopiperidin-1-yl)benzoate

1-<4-(tert-butoxycarbonyl)phenyl>-3-(aminomethylene)-4-piperidone

1-<4-(tert-butoxycarbonyl)phenyl>-4-(N-pyrrolidino)-1,2,5,6-tetrahydropyridine

2-amino-3-cyano-6-(4-carboxyphenyl)-5,6,7,8-tetrahydropyrido<4,3-b>pyridine

2-amino-3-cyano-6-<4-(tert-butoxycarbonyl)phenyl>-5,6,7,8-tetrahydropyrido<4,3-b>pyridine