| alpha-(3-methyl-2-butenyl)-alpha-(1-naphthyl)-1-piperidinebutyramid |
| alpha-(3-methyl-2-butenyl)-alpha-(2-piperidinoethyl)-1-naphthaleneacetamid |
| 2-(3-methyl-2-butenyl)-2-(1-naphthyl)-2-(2-piperidinoethyl)-acetamid |
| alpha-(2-piperidinoethyl)-alpha-phenyl-1-naphthylacetamide |
