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

(2R,4aR,6S,7R,8aS,9R,9aR,10aR)-9-(tert-Butyl-dimethyl-silanyloxy)-7-(2-hydroxy-ethyl)-2-phenyl-octahydro-1,3,8,10-tetraoxa-anthracen-6-ol

(2R,4aR,6S,7R,8aS,9R,9aR,10aR)-6,9-Bis-(tert-butyl-dimethyl-silanyloxy)-7-(2-methoxy-ethyl)-2-phenyl-octahydro-1,3,8,10-tetraoxa-anthracene