6-ethyl-3-methyl-6-phenyl-[1,3]oxazinane
propionic acid anhydride
1,3-dimethyl-4-piperidinone
1,3,5-trimethyl-1,3,5-triazacyclohexane
1-ethylstyrene
(+/-)-α-4-acetoxy-3-methyl-4-phenyl-1-(1-phenylcyclohexyl)piperidine
(+/-)-α-4-hydroxy-3-methyl-4-phenyl-1-(1-phenylcyclohexyl)piperidine
(+/-)-α-1-(1-cyanocyclohexyl)-4-hydroxy-3-methyl-4-phenylpiperidine
α-4-hydroxy-3-methyl-4-phenyl-1-propanoylpiperidine
(+/-)-α-4-hydroxy-3-methyl-4-phenylpiperidine