2,2-Dimethyl-propionic acid (2R,3R)-3-{(4S,5S)-5-[(E)-(S)-4,5-bis-(tert-butyl-dimethyl-silanyloxy)-3-methylene-pent-1-enyl]-2-methoxy-[1,3]dioxolan-4-yl}-3-(tert-butyl-dimethyl-silanyloxy)-2-methyl-propyl ester

(2S,5R,6R,8R,10R)-10-[1,3]Dithian-2-ylmethyl-5-methyl-2-(2-methylene-6-trimethylsilanyloxy-hexyl)-5-triethylsilanyloxy-1,7,9-trioxa-dispiro[5.1.5.2]pentadecane

2,2-Dimethyl-propionic acid (2R,3R)-3-(tert-butyl-dimethyl-silanyloxy)-3-{(4S,5S)-5-[(E)-(S)-3-(1,4-dioxa-spiro[4.4]non-2-yl)-buta-1,3-dienyl]-2,2-dimethyl-[1,3]dioxolan-4-yl}-2-methyl-propyl ester

{(2R,6R,8R,10S,13R)-10-[6-(4-Methoxy-benzyloxy)-2-methylene-hexyl]-13-methyl-13-triethylsilanyloxy-1,7,9-trioxa-dispiro[5.1.5.2]pentadec-2-yl}-methanol