2,2-Dimethyl-propionic acid (1R,3aR,4R,7aR)-4-(2-benzyloxy-ethyl)-7a-methyl-5-oxo-octahydro-inden-1-yl ester

(1R,3aS,5aR,8aR)-3a-methoxyl-5a-methyldecahydro-3-oxo-as-indacen-6-one

(1R,3aS,5aR,8aR,8S)-8-isopropenyl-3a-methoxy-5a-methyldecahydro-3-oxa-as-indacene

(1R,3aS,5aR,8aR,8R)-8-acetyl-3a-methoxy-5a-methyldecahydro-3-oxa-as-indacene

(1R,3aS,5aR,8aR,8S)-8-acetyl-3a-methoxy-5a-methyldecahydro-3-oxa-as-indacene