(2R,3S)-2,3-Bis-benzyloxy-4-[(4S,5S)-5-(tert-butyl-diphenyl-silanyloxymethyl)-2,2-dimethyl-[1,3]dioxolan-4-yl]-pent-4-enal

(2S,3S,5S,6R)-5,6-Bis-benzyloxy-1-(tert-butyl-diphenyl-silanyloxy)-6-[1,3]dithian-2-yl-4-methylene-hexane-2,3-diol

[(4S,5S)-5-((2S,3R)-2,3-Bis-benzyloxy-3-[1,3]dithian-2-yl-1-methylene-propyl)-2,2-dimethyl-[1,3]dioxolan-4-ylmethoxy]-tert-butyl-diphenyl-silane