(2R,6S)-2-[2-(tert-butyldimethylsilanyloxy)ethyl]-6-[(S)-2-(tert-butyldimethylsilanyloxy)pent-4-enyl]tetrahydropyran

(2S,5S,7S)-1-benzyloxy-7-(tert-butyldimethylsilanyloxy)-8-{(2S,6R)-6-[2-(tert-butyldimethylsilanyloxy)ethyl]tetrahydropyran-2-yl}-5-hydroxy-2-methyloctan-3-one

(2S,3R,5R,7S)-1-benzyloxy-7-(tert-butyldimethylsilanyloxy)-8-{(2S,6R)-6-[2-(tert-butyldimethylsilanyloxy)ethyl]tetrahydropyran-2-yl}-2-methyloctane-3,5-diol