(6E,10E)-(4aR,13aS)-1-Diazo-4a,7,11-trimethyl-1,4a,5,8,9,12,13,13a-octahydro-benzocycloundecen-2-one

(4E,8E,12E)-14-(tert-Butyl-dimethyl-silanyloxy)-5,9-dimethyl-2-methylene-pentadeca-4,8,12,14-tetraenal

(5E,9E)-(3aR,12aS)-3a,6,10-Trimethyl-3,3a,4,7,8,11,12,12a-octahydro-cyclopentacycloundecene-1-carboxylic acid methyl ester

(5E,9E)-(3aS,12aR)-3a,6,10-Trimethyl-1,2,3,3a,4,7,8,11,12,12a-decahydro-cyclopentacycloundecene-1-carboxylic acid methyl ester