(2R,3S,6S)-2-tert-butyldimethylsilanyloxymethyl-6-((4RS)-2,2-dimethyl-[1,3]dioxolan-4-ylmethyl)tetrahydropyran-3-ol

(2R,3S)-3-(tert-butyldimethylsilanyloxy)-4-(2-{(2S,3R,6S)-6-[2-(tert-butyldimethylsilanyloxy)pent-3-enyl]-3-methyltetrahydropyran-2-yl}acetylamino)-2-methylbutyric acid

(2R,3S)-3-(tert-butyldimethylsilanyloxy)-4-(2-{(2S,3R,6S)-6-[2-(tert-butyldimethylsilanyloxy)pent-3-enyl]-3-methyltetrahydropyran-2-yl}acetylamino)-2-methylbutyric triisopropylsilanyl ester