[(2R,4aS,6S,7S,8R,8aR)-7,8-Dihydroxy-6-((E)-(S)-1-hydroxy-3-trimethylsilanyl-allyl)-octahydro-pyrano[3,2-b]pyran-2-yl]-acetic acid methyl ester

methyl 2-((3a'S,4'R,5a'S,8'R,9a'S,9b'S)-4'-formyloctahydrospiro[cyclohexane-1,2'-[1,3]dioxolo[4,5-d]pyrano[3,2-b]pyran]-8'-yl)acetate

methyl 2-((3a'R,4'S,5a'S,8'R,9a'S,9b'S)-4'-((S)-1,4-dioxaspiro[4.5]decan-2-yl)octahydrospiro[cyclohexane-1,2'-[1,3]dioxolo[4,5-d]pyrano[3,2-b]pyran]-8'-yl)acetate

ER 803895

{(2R,4aS,6S,7R,8S,8aS)-7,8-Bis-(tert-butyl-dimethyl-silanyloxy)-6-[(E)-(S)-1-(tert-butyl-dimethyl-silanyloxy)-3-trimethylsilanyl-allyl]-octahydro-pyrano[3,2-b]pyran-2-yl}-acetic acid methyl ester