ethyl 1-(2-ethylsulfanylethyl)-4-phenylpiperidine-4-carboxylate

ethyl 1-[(4-aminophenyl)carbamoyl]-4-phenylpiperidine-4-carboxylate

ethyl 1-[(4-chlorophenyl)carbamoyl]-4-phenylpiperidine-4-carboxylate

4-cyclohexyl-4-(1,2,4-triazol-1-ylmethyl)piperidine

ethyl 1-(2-anilinoethyl)-4-phenylpiperidine-4-carboxylate