Benzoic acid (1R,2S)-1-ethyl-3-hydroxy-2-methyl-propyl ester

(E)-(4S,5S,6S,8R)-5-(tert-Butyl-dimethyl-silanyloxy)-4,6,8-trimethyl-non-2-enedioic acid 1-methyl ester

(E)-(4S,5S,6S,8R)-5-(tert-Butyl-dimethyl-silanyloxy)-8-chlorocarbonyl-4,6-dimethyl-non-2-enoic acid methyl ester

9-(tert-butyldimethylsilyl) 1-methyl (4S,5S,6S,8R,E)-5-((tert-butyldimethylsilyl)oxy)-4,6,8-trimethylnon-2-enedioate