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

(E)-4-[(4aR,6S,7R,8aS)-7-(tert-Butyl-dimethyl-silanyloxy)-2-phenyl-hexahydro-pyrano[3,2-d][1,3]dioxin-6-yl]-2-methyl-but-2-enoic acid ethyl ester

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

Acetic acid (4aR,5aS,6aR,8S,10S,10aR,11aR,12aS)-10-(tert-butyl-dimethyl-silanyloxy)-10a-methyl-2-phenyl-dodecahydro-1,3,5,7,11-pentaoxa-naphthacen-8-yl ester