8,9-dihydroxy-1-oxa-spiro[4.5]dec-6-en-2-one

Δ6,7-8,9-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

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

methyl (-)-3,4-O-isopropylidene-5-O-(tert-butyldiphenylsilyl)quinate

3,4-isopropylidenequinide

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