(1R,2R,4aR,8aR)-2-hydroxy-5,5,8a-trimethyldecahydronaphthalen-1-ylmethyl (S)-1-tert-butoxycarbonyl-pyrrolidine-2-carboxylate

(1S,4aR,8aR)-5,5,8a-trimethyl-2-oxo-decahydro-naphthalene-1-carboxylic acid benzyl ester

(1S,2R,4aR,8aR)-(-)-methyl 2-hydroxy-5,5,8a-trimethyldecahydronaphthalene-1-carboxylate

3-acetyloxy-5-(2',6',6'-trimethylcyclohex-1'-enyl)-penta-2,4-dienoic acid (-)-menthyl ester

(1R,8aS)-2-acetyloxy-5,5,8a-trimethyl-1,5,6,7,8,8a-hexahydro-naphthalene-1-carboxylic acid (-)-menthyl ester