(4R,5S)-5-Benzyloxy-hept-1-yn-4-ol

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

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