(2aR,5R,7aR)-2a-(tert-Butyl-dimethyl-silanyloxymethyl)-5-(2-methoxymethoxy-ethyl)-6,6-dimethyl-2-methylene-hexahydro-cyclobuta[c]pentalen-3-one

3-(2-Methoxymethoxy-ethyl)-4,4-dimethyl-hept-1-en-6-yne

6-(2-Methoxymethoxy-ethyl)-5,5-dimethyl-oct-7-en-2-yn-1-ol

ethyl 5,5-dimethyl-6-vinyl-8-<(methoxymethyl)oxy>oct-2-ynoate

tert-Butyl-[6-(2-methoxymethoxy-ethyl)-5,5-dimethyl-oct-7-en-2-ynyloxy]-dimethyl-silane