(1S,7aR)-7a-Methyl-5-oxo-2,3,5,6,7,7a-hexahydro-1H-indene-1-carbonitrile

(2Z,4E)-(R)-6-Acetoxy-7-[(1R,2S)-2-(tert-butyl-diphenyl-silanyloxymethyl)-1-methyl-5-oxo-cyclopentyl]-3-ethoxy-hepta-2,4-dienoic acid allyl ester

(4S,4aS,8S,8aS)-4-{(R)-1-Acetoxy-2-[(1R,2S)-2-(tert-butyl-diphenyl-silanyloxymethyl)-1-methyl-5-oxo-cyclopentyl]-ethyl}-8-(tert-butyl-diphenyl-silanyloxy)-2,5-dioxo-octahydro-naphthalene-1,4a-dicarboxylic acid 1-allyl ester 4a-methyl ester

(1S,7aR)-7a-methyl-1,2,3,6,7,7a-hexahydrospiro[indene-5,2'-[1,3]dioxolane]-1-carbonitrile

(1S,7aR)-7a-methyl-1,2,3,6,7,7a-hexahydrospiro[indene-5,2'-[1,3]dioxolane]-1-carbaldehyde