(3aR,5S,7R,7aR)-7-(tert-Butyl-diphenyl-silanyloxy)-5-hydroxymethyl-2,2-dimethyl-hexahydro-benzo[1,3]dioxol-5-ol

7-methanesulfonyloxy-8,9-O-isopropylidene-1-oxaspiro[4.5]decan-2-one

5-(tert-butyldiphenylsilanyloxy)-6,7-O-isopropylidene-1-oxaspiro[2.5]octane

7-(tert-butyldiphenylsilanyloxy)-8,9-O-isopropylidene-1-oxa-spiro[4.5]decan-2-one

methanesulfonic acid 7-(tert-butyl-diphenyl-silanyloxy)-5-hydroxy-2,2-dimethyl-hexahydro-benzo[1,3]dioxol-5-ylmethyl ester