(R)-5-((S)-3-Benzenesulfonyl-6-{(6S,7R)-7-[2-(tert-butyl-dimethyl-silanyloxy)-ethyl]-6,7-dimethyl-1,4-dioxa-spiro[4.5]dec-6-yl}-4-hydroxy-2-methyl-hexyl)-2,2-dimethyl-oxazolidine-3-carboxylic acid benzyl ester

(4aS,8aS)-5-Hydroxy-4a,8a-dimethyl-hexahydro-naphthalene-1,6-dione

3-((1S,2R)-1,2-Dimethyl-6-oxo-2-vinyl-cyclohexyl)-propionic acid methyl ester

3-((1S,2S)-2-Formyl-1,2-dimethyl-6-oxo-cyclohexyl)-propionic acid methyl ester

3-((6S,7R)-6,7-Dimethyl-7-vinyl-1,4-dioxa-spiro[4.5]dec-6-yl)-propionic acid methyl ester