(2S,3S)-2-Benzyloxy-3-(1-methoxy-1-methyl-ethoxy)-butane-1,4-diol

[(R)-1-((S)-1-Benzyloxy-propyl)-but-3-ynyloxy]-tert-butyl-dimethyl-silane

Methanesulfonic acid (1S,2S)-2-benzyloxy-1-(tert-butyl-dimethyl-silanyloxymethyl)-butyl ester

(2R,3R,8R,9S)-9-Benzyloxy-2,8-bis-(tert-butyl-dimethyl-silanyloxy)-1-(4-methoxy-benzyloxy)-undec-5-yn-3-ol