1-N-Boc-O-甲磺酰－羟乙基哌啶

4-(1-羟基乙基)哌啶-1-羧酸叔丁酯

N-Boc-4-哌啶乙醇

4-哌啶乙酸乙酯

tert-butyl 4-(3-hydroxyprop-1-en-2-yl)piperidine-1-carboxylate