acetyl (2R,3S,6R)-2-acetoxymethyl-6-((4RS)-2,2-dimethyl-[1,3]dioxolan-4-ylmethyl)-3,6-dihydro-2H-pyran-3-yl ester

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

(2R,3S)-4-azido-3-(tert-butyldimethylsilanyloxy)-2-methylbutyric acid ethyl ester

[(2R,3R,6S)-6-((2RS)-2,3-dihydroxypropyl)-3-methyltetrahydropyran-2-yl]acetyl methyl ester

(2R,3S)-4-azido-3-hydroxy-2-methylbutyric acid ethyl ester