(4aR,6R,7S,8aR,9aS,10aS)-6-Benzyloxy-7-(2-benzyloxy-ethyl)-4,4a,7,10a-tetramethyl-4a,5,6,7,8a,9,9a,10a-octahydro-1,8,10-trioxa-anthracen-2-one

1-[(2S,3S,4aR,6S,7R,8aS)-7-Benzyloxy-6-(2-benzyloxy-ethyl)-3-(tert-butyl-dimethyl-silanyloxy)-2,6,8a-trimethyl-octahydro-pyrano[3,2-b]pyran-2-yl]-ethanone

Bromo-acetic acid (2S,3S,4aR,6S,7R,8aS)-2-acetyl-7-benzyloxy-6-(2-benzyloxy-ethyl)-2,6,8a-trimethyl-octahydro-pyrano[3,2-b]pyran-3-yl ester

(Dimethoxy-phosphoryl)-acetic acid (2S,3S,4aR,6S,7R,8aS)-2-acetyl-7-benzyloxy-6-(2-benzyloxy-ethyl)-2,6,8a-trimethyl-octahydro-pyrano[3,2-b]pyran-3-yl ester