(2R,3S,4aR,5S,7R,8aR,9aS,10aR)-5-(tert-Butyl-dimethyl-silanyloxy)-2-(tert-butyl-dimethyl-silanyloxymethyl)-7-[2-(tert-butyl-diphenyl-silanyloxymethyl)-allyl]-10a-methyl-decahydro-1,8,10-trioxa-anthracen-3-ol

2,2-Dimethyl-propionic acid (2R,3S,4aR,5S,7R,8aR,9aS,10aR)-5-(tert-butyl-dimethyl-silanyloxy)-7-[2-(tert-butyl-diphenyl-silanyloxymethyl)-allyl]-2-(2,2-dimethyl-propionyloxymethyl)-10a-methyl-decahydro-1,8,10-trioxa-anthracen-3-yl ester

(4aR,6R,7S,8aR,9aS,10aS)-7-Methyl-2-phenyl-7-vinyl-octahydro-1,3,8,10-tetraoxa-anthracen-6-ol

Bromo-acetic acid (4aR,6R,7S,8aR,9aS,10aS)-7-methyl-2-phenyl-7-vinyl-octahydro-1,3,8,10-tetraoxa-anthracen-6-yl ester

(4aR,5aS,6aR,10S,10aS,11aR,12aS)-10-Hydroxy-10a-methyl-2-phenyl-decahydro-1,3,5,7,11-pentaoxa-naphthacen-8-one