benzyl 3-ethyl-3-hydroxy-1,2,3,6-tetrahydropyridine-1-carboxylate

3-Ethyl-3-(2-oxo-ethyl)-3,6-dihydro-2H-pyridine-1-carboxylic acid benzyl ester

benzyl 3-ethyl-3-(2-ethylenedioxyethyl)piperidine-1-carboxylate