(-)-(3S)-3,5-bis(tert-butyldimethylsilyloxy)-pentan-2-one

(4R,5S,6S,4'S)-2-(2,2-Dimethyl-1,3-dioxan-4-yl)-5-hydroxy-2,4,6-trimethyl-10-undecen-3-one

(3S,6R,7S,8S)-3,7-Di-(tert-butyldimethylsilyloxy)-1-hydroxy-4,4,6,8-tetramethyl-12-tridecen-5-one

(3S,6R,7S,8S)-3,7-Di-(tert-butyldimethylsilyloxy)-4,4,6,8-tetramethyl-5-oxo-12-tridecenoic acid