| alpha-(3-methylbut-1-yn-3-enyl)-cyclopentaneglycolic aci 1-methyl-4-piperid |
| 1-methyl-4-piperidyl cyclopentyl(3-methyl-but-1-yn-3-enyl)glycolate |
| alpha-(3-methylbut-1-yn-3-enyl)cyclohexaneglycolic acid 1-methyl-4-piperidyl |
| alpha-(3-methylbut-1-yn-3-enyl)-cyclopentaneglycolic aci 1-methyl-4-piperidyl ester |
