4,4-(ethylenedioxy)-7-hydroxymethylbicyclo<4.2.0>octa-1(6)-ene

8-(bromomethyl)spiro[bicyclo[4.2.0]octane-3,2'-[1,3]dioxolan]-1(6)-ene

7-[2-(Diphenyl-phosphinoyl)-eth-(E)-ylidene]-8-methylene-1,4-dioxa-spiro[4.5]decane

4,4-(ethylenedioxy)-7-toluene-p-sulfonylmethylbicyclo<4.2.0>octa-1(6)-ene

3-(((1R,3aS,7aR,E)-7a-methyl-1-((R)-6-methylheptan-2-yl)octahydro-4H-inden-4-ylidene)methyl)-1,4,6,7-tetrahydro-3H-spiro[benzo[c]thiophene-5,2'-[1,3]dioxolane] 2,2-dioxide

3-[(1R,3aS,7aR)-1-((R)-1,5-Dimethyl-hexyl)-7a-methyl-octahydro-inden-(4E)-ylidenemethyl]-2,2-dioxo-1,2,3,4,6,7-hexahydro-2λ6-benzo[c]thiophen-5-one

3Β,5E,7E-9,10-断胆甾-5,7,10[1P]-三烯-3-醇

8-Methylene-7-[2-(toluene-4-sulfonyl)-eth-(E)-ylidene]-1,4-dioxa-spiro[4.5]decane