(3aS,4S,7R,7aS)-2-Undecyl-3a,4,7,7a-tetrahydro-4,7-methano-inden-1-one

(R)-5-(tert-Butyl-dimethyl-silanyloxymethyl)-5-undecyl-cyclopent-2-enone

(2R,3aR,4S,7R,7aS)-2-Hydroxymethyl-2-undecyl-2,3,3a,4,7,7a-hexahydro-4,7-methano-inden-1-one

(2R,3aR,4S,7R,7aS)-2-(tert-Butyl-dimethyl-silanyloxymethyl)-2-undecyl-2,3,3a,4,7,7a-hexahydro-4,7-methano-inden-1-one

(R)-2-(tert-Butyl-dimethyl-silanyloxymethyl)-2-undecyl-cyclopentanone