2,2-Dimethyl-3-oxopentanal

(5S)-5-hydroxy-4,4-dimethyloct-7en-3-one

(5S)-5-(tert-butyl-dimethyl-silanyloxy)-4,4-dimethyloct-7en-3-one

(3S)-3-(tert-butyl-dimethyl-silanyloxy)-4,4-dimethyl-5-oxo-heptanal

(4S,6E)-4-(tert-butyldimethylsilanyloxy)-5-methyl-6-(2-methyl-1,3-thiazol-4-yl)-5-hexene-1,2-diol