tert-butyl 4-[1-(2-phenylacetyl)oxyprop-2-enyl]piperidine-1-carboxylate

tert-butyl 4-[2-methylidene-1-(2-phenylacetyl)oxybutyl]piperidine-1-carboxylate

4-{[4-(3,4-二氯苯氧基)哌啶-1-基]甲基}哌啶-1-羧酸叔丁酯

tert-butyl 4-[(E)-3-oxo-3-phenylprop-1-enyl]piperidine-1-carboxylate

9-氧代-3-氮杂螺[5.5]-7-十一烯-3-羧酸叔丁酯