(1S,4S,6S,7R,9R)-7-Methyl-2-oxo-10-oxa-tricyclo[7.2.1.01,6]dodecane-4-carboxylic acid methyl ester

(1S,4S,6R,7S,9S)-7-Methyl-11-oxo-10-oxa-tricyclo[7.2.1.01,6]dodecane-4-carboxylic acid methyl ester

(2S,4aS,8S,8aR)-8-Methyl-6-oxo-octahydro-naphthalene-2,4a-dicarboxylic acid dimethyl ester

(2R,4R,4aS,8S,8aS)-8-Methoxy-4,8a-dimethyl-decahydro-naphthalen-2-ol

5-Methoxy-1,4a-dimethyl-decahydro-naphthalen-2-ol