(3aS,6R,7S,7aS)-5-Benzyl-7-benzyloxy-6-[(R)-1-(tert-butyl-dimethyl-silanyloxy)-allyl]-2,2-dimethyl-hexahydro-[1,3]dioxolo[4,5-c]pyridine

(3aS,6R,7S,7aS)-5-Benzyl-7-benzyloxy-6-[(S)-1-(tert-butyl-dimethyl-silanyloxy)-allyl]-2,2-dimethyl-hexahydro-[1,3]dioxolo[4,5-c]pyridine

N-benzyl-4-O-benzyl-6-O-tert-butyldimethylsilyl-2,3-O-isopropylidene-(1S,6S,7S,8S,8aS)-1,6,7,8-tetrahydroxyoctahydroindolizinium methanesulphonate

N-benzyl-4-O-benzyl-6-O-tert-butyldimethylsilyl-2,3-O-isopropylidene-(1R,6S,7S,8S,8aS)-1,6,7,8-tetrahydroxyoctahydroindolizinium methanesulphonate