3-(2,3,4,5-tetrahydropyridin-6-yl)pyridine

N-Boc-3,4-二氢-2H-吡啶

2-羟基吡啶

1-(3-氯苯基)-2-哌啶酮

4-(2-氧代-1-哌啶)-苯甲酸