5-allyloxy-3-bromo-7-(tert-butyldiphenylsilyloxy)-2,6-dimethyl-[1,4]-naphthoquinone

5-allyloxy-3-bromo-7-methoxymethoxy-2,6-dimethyl-[1,4]-naphthoquinone

8-Allyloxy-1,4-dimethoxy-6-methoxymethoxy-3,7-dimethyl-naphthalene-2-carboxylic acid