(2S)-2-methyl-4-(phenylsulfonyl)butanal

(5R,6S,7S)-6-hydroxy-3,3,5,7-tetramethyl-9-(phenylsulfonyl)non-1-en-4-one

(4R,5S,6S)-5-{[tert-butyl(dimethyl)silyl]oxy}-2,2,4,6-tetramethyl-3-oxo-8-(phenylsulfonyl)octanal

(+)-(5R,6S,7S)-6-{[tert-butyl(dimethyl)silyl]oxy}-3,3,5,7-tetramethyl-9-(phenylsulfonyl)non-1-en-4-one

(-)-(5R,6S,7S)-6-hydroxy-8-[(4-methoxybenzyl)oxy]-3,3,5,7-tetramethyloct-1-en-4-one