(2R,3S)-2-(3,3-dimethoxypropyl)-2-methylpentane-1,3-diol

(4R)-4-(t-Butyldimethylsiloxymethyl)-4-methyl-7,7-dimethoxy-3-heptanone

(R)-4-(tert-Butyl-dimethyl-silanyloxymethyl)-3-ethoxy-2,4-dimethyl-cyclohex-2-enone