(1R,4S)-4-hydroxy-4-butyl-2-cyclopenten-1-yl acetate

(1R,4S)-4-hydroxy-4-phenylethynyl-2-cyclopenten-1-yl acetate

2-((1R,4S)-4-Acetoxy-4-butyl-cyclopent-2-enyl)-3-oxo-butyric acid ethyl ester

(2R,3R,5aS,7aS,8S,9R,10aR,10bS)-9-(tert-Butyl-dimethyl-silanyloxy)-3-(tert-butyl-diphenyl-silanyloxy)-8-isopropyl-2-methoxy-5a,7a-dimethyl-2,3,4,5,5a,6,7,7a,8,9,10a,10b-dodecahydro-1-oxa-benzo[cd]cyclopenta[h]azulen-10-one

(4S,7R)-4-{2-[(1S,4R,5S)-3,4-Bis-(tert-butyl-dimethyl-silanyloxy)-5-isopropyl-1-methyl-cyclopent-2-enyl]-ethyl}-7-(tert-butyl-diphenyl-silanyloxy)-4-methyl-4,5,6,7-tetrahydro-isobenzofuran