[(1R,5R,7S,8R)-7-Bromomethyl-8-(tert-butyl-dimethyl-silanyloxymethyl)-4,7-dimethyl-6-oxa-bicyclo[3.2.1]oct-3-en-5-yl]-acetonitrile

(2aR,2a1R,4aR,5S,8R,8aS,9R)-2a,4a-dihydroxy-2a1-methyl-9-(prop-1-en-2-yl)-2a,2a1,4a,5,8,8a-hexahydro-1,7-dioxa-5,8-methanocyclopenta[cd]azulene-2,6-dione

(2S,2aR,2a1R,4aR,5S,8R,8aS,9R)-2,2a,4a-trihydroxy-2a1-methyl-9-(prop-1-en-2-yl)-2a,2a1,4a,5,8,8a-hexahydro-1,7-dioxa-5,8-methanocyclopenta[cd]azulen-6(2H)-one

8,9-deoxy-β-bromopicrotoxinic acid methyl ester

(1R,2R,4R,5S,6R,7R,10S,11R)-2,4,5,11-tetrahydroxy-10-isopropenyl-6-methyl-9-oxo-8-oxatricyclo<5.2.2.02,6>undecane-5-carboxylic acid methyl ester