(-)-(5S)-5,7-bis(tert-butyldimethylsilyloxy)-4,4-dimethylheptan-3-ol

(-)-(3S)-4-{[tert-butyl(diphenyl)silyl]oxy}-3-methylbutyl phenyl sulfone

(S)-phenyl 5-((tert-butyldimethylsilyl)oxy)-3-hydroxy-2,2-dimethylpentanoate

(S)-3,5-Bis-(tert-butyl-dimethyl-silanyloxy)-2,2-dimethyl-pentanoic acid phenyl ester