5-(4-methylpent-3-enyl)-1,2,3-trithiacyclohept-5-ene

6-(4-methylpent-3-enyl)-1,2,3,4-tetrathiacyclo-oct-6-ene

3-(4-methylpent-3-enyl)thiophene

4,4-dimethyl-1,2-diselenacyclopentane

2,5-dihydro-3-(4-methylpent-3-enyl)thiophen