(2R,3R,4aR,6S,7S,8R,8aR)-7,8-Bis-benzyloxy-2-(2-hydroxy-ethyl)-6-[2-(4-methoxy-benzyloxy)-ethyl]-octahydro-pyrano[3,2-b]pyran-3-ol

(Z)-(S)-5-[(2R,3R,4S,5S,6S)-4,5-Bis-benzyloxy-3-hydroxy-6-(2-hydroxy-ethyl)-tetrahydro-pyran-2-yl]-4-(tert-butyl-dimethyl-silanyloxy)-pent-2-enoic acid methyl ester

(Z)-(R)-5-[(2R,3R,4S,5S,6S)-4,5-Bis-benzyloxy-3-hydroxy-6-(2-hydroxy-ethyl)-tetrahydro-pyran-2-yl]-4-(tert-butyl-dimethyl-silanyloxy)-pent-2-enoic acid methyl ester

2-{(2R,3S,4aR,6S,7S,8R,8aR)-7,8-Bis-benzyloxy-3-(tert-butyl-dimethyl-silanyloxy)-6-[2-(4-methoxy-benzyloxy)-ethyl]-octahydro-pyrano[3,2-b]pyran-2-yl}-ethanol