2,2-Dimethyl-propionic acid (2R,3S,4aR,8S,8aR)-6,8-diacetoxy-2-(2,2-dimethyl-propionyloxymethyl)-8a-methyl-octahydro-pyrano[3,2-b]pyran-3-yl ester

2,2-Dimethyl-propionic acid (2R,3S,4aR,6R,8S,8aR)-8-acetoxy-6-(2-acetoxymethyl-allyl)-2-(2,2-dimethyl-propionyloxymethyl)-8a-methyl-octahydro-pyrano[3,2-b]pyran-3-yl ester

2,2-Dimethyl-propionic acid (2R,3S,4aR,6R,8S,8aR)-8-acetoxy-6-[2-(tert-butyl-diphenyl-silanyloxymethyl)-allyl]-2-(2,2-dimethyl-propionyloxymethyl)-8a-methyl-octahydro-pyrano[3,2-b]pyran-3-yl ester

(2R,4aR,5S,7R,8aR,9aS,10aR)-5-(tert-Butyl-dimethyl-silanyloxy)-7-[2-(tert-butyl-diphenyl-silanyloxymethyl)-allyl]-2-(4-methoxy-phenyl)-10a-methyl-octahydro-1,3,8,10-tetraoxa-anthracene

{(2R,3S,4aR,6R,8S,8aR)-8-(tert-Butyl-dimethyl-silanyloxy)-6-[2-(tert-butyl-diphenyl-silanyloxymethyl)-allyl]-8a-methyl-3-triethylsilanyloxy-octahydro-pyrano[3,2-b]pyran-2-yl}-acetaldehyde