p. 4693 - 4696
(2007/10/03)(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
Acetic acid (R)-2-[(1R,2S)-2-(tert-butyl-diphenyl-silanyloxymethyl)-1-methyl-5-oxo-cyclopentyl]-1-ethylsulfanylcarbonyl-ethyl ester
(R)-2-Acetoxy-3-[(1R,2S)-2-(tert-butyl-diphenyl-silanyloxymethyl)-1-methyl-5-oxo-cyclopentyl]-propionic acid
acetic acid 3-(tert-butyl-diphenyl-silanyloxymethyl)-3a-methyl-6-oxo-2,3,3a,4,5,6-hexahydro-1H-inden-5-yl ester
Acetic acid (R)-2-[(1R,2S)-2-(tert-butyl-diphenyl-silanyloxymethyl)-1-methyl-5-oxo-cyclopentyl]-1-formyl-ethyl ester