2,2-Dimethyl-propionic acid (2R,3R)-3-{4-[2-benzyloxy-5-(2-ethoxycarbonyl-ethyl)-phenoxy]-phenyl}-2,3-dihydroxy-propyl ester

(13R,14R)-4-Benzyloxy-13,14-bis-(tert-butyl-dimethyl-silanyloxy)-2,11-dioxa-tricyclo[13.2.2.13,7]icosa-1(18),3,5,7(20),15(19),16-hexaen-10-one

3-(4-Benzyloxy-3-{4-[(1R,2R)-1,2-bis-(tert-butyl-dimethyl-silanyloxy)-3-hydroxy-propyl]-phenoxy}-phenyl)-propionic acid

2,2-Dimethyl-propionic acid (2R,3R)-3-{4-[2-benzyloxy-5-(2-ethoxycarbonyl-ethyl)-phenoxy]-phenyl}-2,3-bis-(tert-butyl-dimethyl-silanyloxy)-propyl ester

2,2-Dimethyl-propionic acid (2R,3R)-3-{4-[2-benzyloxy-5-(2-carboxy-ethyl)-phenoxy]-phenyl}-2,3-bis-(tert-butyl-dimethyl-silanyloxy)-propyl ester