(2S,4aR,8aS,4'aR,8'aS)-spiro(2,4a,6,7,8,8a)-hexahydropyrano[3,2-b]pyrane-2,2'-octahydropyrano[3,2-b]pyran-3'-one

(4aS,6S,8aR)-6-((R)-1-(2-(2-(allyloxy)ethoxy)ethoxy)-2-((2R,3S)-3-(2-(2-(allyloxy)ethoxy)ethoxy)tetrahydro-2H-pyran-2-yl)ethyl)-2,3,4,4a,6,8a-hexahydropyrano[3,2-b]pyran

(3S,4aR,8aS)-2-(((2R,3S)-3-((tert-butyldimethylsilyl)oxy)tetrahydro-2H-pyran-2-yl)ethynyl)-3-(methoxymethoxy)octahydropyrano[3,2-b]pyran-2-ol

(3S,4aR,8aS)-2-(((2R,3S)-3-hydroxytetrahydro-2H-pyran-2-yl)ethynyl)-2-methoxyoctahydropyrano[3,2-b]pyran-3-ol

(3S,4aR,8aS)-2-((Z)-2-((2R,3S)-3-hydroxytetrahydro-2H-pyran-2-yl)vinyl)-2-methoxyoctahydropyrano[3,2-b]pyran-3-ol