(2R,4R)-5-(dimethyl-t-butylsiloxy)-2,4-dimethylpentane-1,2-diol

(2S,3S,4S)-5-(dimethyl-t-butylsiloxy)-2,4-dimethyl-2,3-epoxypentan-1-ol

(2R,4R)-5-(dimethyl-t-butylsiloxy)-2-hydroxy-2,4-dimethylpentanal

(4R,6R,2E)-methyl 7-(dimethyl-t-butylsiloxy)-4-hydroxy-4,6-dimethylhept-2-enoate

(4R,6R,2E)-methyl 7-hydroxy-4,6-dimethyl-4-(2-trimethylsilylethoxymethoxy)hept-2-enoate