(2S)-5-benzyloxy-2-methyl-1-pentanal

(E)-(6R,7S,8S)-11-Benzyloxy-7-hydroxy-4,4,6,8-tetramethyl-5-oxo-undec-2-enoic acid methyl ester

(6R,7S,8S)-7-(tert-Butyl-dimethyl-silanyloxy)-11-hydroxy-4,4,6,8-tetramethyl-5-oxo-undecanoic acid methyl ester