(2S,3S,4S)-3,4-Bis-benzyloxy-hept-5-yne-1,2-diol

(S)-4-((1R,2S)-1,2-Bis-benzyloxy-pent-3-ynyl)-2,2-dimethyl-[1,3]dioxolane

(2R,3S,4S)-3,4-Bis-benzyloxy-1-iodo-6-trimethylsilanyl-hex-5-yn-2-ol

(4S,5S,6R)-4,5-Bis-benzyloxy-7-bromo-6-hydroxy-hept-2-ynoic acid methyl ester