3-[(R)-2-(tert-Butyl-dimethyl-silanyloxy)-1-methyl-cyclopentyl]-propionic acid methyl ester

3-[(R)-2-(tert-Butyl-dimethyl-silanyloxy)-1-methyl-cyclopentyl]-propionic acid

1-{2-[(R)-2-(tert-Butyl-dimethyl-silanyloxy)-1-methyl-cyclopentyl]-ethyl}-cyclohexa-2,5-dienecarboxylic acid methyl ester

methyl (1R)-1-[2-(1-methyl-2-{[(trifluoromethyl)sulfonyl]oxy}cyclopent-2-en-1-yl)ethyl]cyclohexa-2,5-diene-1-carboxylate

(3aR,5aR,9aS)-3a-Methyl-8-oxo-2,3,3a,4,5,8,9,9a-octahydro-cyclopenta[a]naphthalene-5a-carboxylic acid methyl ester