2-(3-吡啶基)-2-丙醇

ethyl 6-(5-ethoxycarbonylpyridin-2-yl)pyridine-3-carboxylate

3-丙酰基吡啶

(R)-3-哌啶甲酸乙酯

(S)-哌啶-1,3-二羧酸 1-苄酯 3-乙酯