2,3-Epoxy-5-vinylnorbornane

6-Vinyl-3-oxatricyclo[3.2.1.02,4]octane

6-Ethenyl-3-oxatricyclo[3.2.1.02,4]octane

3-Vinyl-2,5-methano-7-oxabicyclo[4.1.0]heptane