(4S,5R)-5-(tert-butyldimethylsilanyloxy)-4-[(R)-1-(tert-butyldimethylsilanyloxy)allyl]oct-7-yn-1-ol

1-pivalic acid (2S,3S)-3-(tert-butyldimethylsilanyloxy)-2-[(R)-1-(tert-butyldimethylsilanyloxy)allyl]hex-5-ynyl ester

2,4,6-Trimethyl-benzenesulfonic acid (3S,4R)-4-(tert-butyl-dimethyl-silanyloxy)-3-[(R)-1-(tert-butyl-dimethyl-silanyloxy)-allyl]-hept-6-ynyl ester