(3S,4S,5R,6R)-4-Benzyloxy-6,8-bis-(tert-butyl-dimethyl-silanyloxy)-3,5,7,7-tetramethyl-octanal

(3R,4R,5S,6S)-5-Benzyloxy-3-(tert-butyl-dimethyl-silanyloxy)-2,2,4,6-tetramethyl-octanedioic acid diethyl ester

(3R,4S,5R)-5-Benzyloxy-6-(tert-butyl-diphenyl-silanyloxy)-3-hydroxy-2,2,4-trimethyl-hexanoic acid ethyl ester

(3R,4R,5R)-5-Benzyloxy-3-(tert-butyl-dimethyl-silanyloxy)-6-(tert-butyl-diphenyl-silanyloxy)-2,2,4-trimethyl-hexanoic acid ethyl ester

Acetic acid (Z)-(1S,8S,9S,10R,11R)-9-benzyloxy-11-(tert-butyl-dimethyl-silanyloxy)-13-hydroxy-8,10,12,12-tetramethyl-1-[(E)-1-methyl-2-(2-methyl-thiazol-4-yl)-vinyl]-tridec-3-enyl ester