(R)-6-[(1R,2R)-1-Benzyloxycarbonylamino-2-(tert-butyl-dimethyl-silanyloxy)-propyl]-4-(tert-butyl-dimethyl-silanyloxy)-cyclohexa-1,4-dienecarboxylic acid methyl ester

(S)-6-[(1R,2R)-1-Benzyloxycarbonylamino-2-(tert-butyl-dimethyl-silanyloxy)-propyl]-4-(tert-butyl-dimethyl-silanyloxy)-cyclohexa-1,4-dienecarboxylic acid methyl ester

(4S,5S,6S)-6-[(1R,2R)-1-Benzyloxycarbonylamino-2-(tert-butyl-dimethyl-silanyloxy)-propyl]-4-(tert-butyl-dimethyl-silanyloxy)-5-hydroxy-cyclohex-1-enecarboxylic acid methyl ester

benzyl ((3a'R,5'R,5a'S,8'R,9'R,9a'R,9b'R)-5'-hydroxy-8'-methyl-6'-oxooctahydro-5'H-spiro[cyclohexane-1,2'-[1,3]dioxolo[4,5-f]isochromen]-9'-yl)carbamate

((3R,4R,4aR,5R,6R,8R,8aS)-5,6,8-Trihydroxy-3-methyl-1-oxo-octahydro-isochromen-4-yl)-carbamic acid benzyl ester