2,2-Dimethyl-propionic acid (4S,5S)-5-[(2R,3S,4R,5R)-3-benzyloxy-5-(tert-butyl-diphenyl-silanyloxymethyl)-4-(4-methoxy-benzyloxy)-tetrahydro-furan-2-yl]-2,2-dimethyl-[1,3]dioxolan-4-ylmethyl ester

((3aS,4S,5aR,5bS,9aR,10aR,10bR)-2,2,7,7-Tetramethyl-octahydro-1,3,5,6,8,10-hexaoxa-cyclopenta[a]fluoren-4-yl)-acetic acid ethyl ester

2,2-Dimethyl-propionic acid (4S,5S)-5-[(2R,3S,4S,5R)-3-benzyloxy-5-(tert-butyl-diphenyl-silanyloxymethyl)-4-hydroxy-tetrahydro-furan-2-yl]-2,2-dimethyl-[1,3]dioxolan-4-ylmethyl ester

2,2-Dimethyl-propionic acid (4S,5S)-5-[(2R,3S,4R,5R)-3-benzyloxy-5-(tert-butyl-diphenyl-silanyloxymethyl)-4-hydroxy-tetrahydro-furan-2-yl]-2,2-dimethyl-[1,3]dioxolan-4-ylmethyl ester