(3S,5R,6S,7S,8S)-7-Benzyloxy-3,5-dihydroxy-4,4,6,8-tetramethyl-undec-10-enoic acid isopropyl ester

(3R,4R,5S,6S)-5-Benzyloxy-3-(tert-butyl-dimethyl-silanyloxy)-2,2,4,6-tetramethyl-non-8-enoic acid ethyl ester

(3R,4R,5S,6S)-5-Benzyloxy-3-(tert-butyl-dimethyl-silanyloxy)-8-hydroxy-2,2,4,6-tetramethyl-octanoic acid ethyl ester

(3S,5R,6R,7S,8S)-7-Benzyloxy-5-(tert-butyl-dimethyl-silanyloxy)-3-hydroxy-4,4,6,8-tetramethyl-undec-10-enoic acid ethyl ester