2-((2R,3S,4aR,8aS)-3-((tert-butyldimethylsilyl)oxy)-6-methoxy-2-methyloctahydropyrano[3,2-b]pyran-2-yl)ethan-1-ol

1-((2R,3S,4aR,8aS)-3-((tert-butyldimethylsilyl)oxy)-6-methoxy-2-methyloctahydropyrano[3,2-b]pyran-2-yl)propan-2-ol

1-((2R,3S,4aR,8aS)-3-hydroxy-6-methoxy-2-methyloctahydropyrano[3,2-b]pyran-2-yl)propan-2-one

ethyl (E)-3-(((2R,3S,4aR,8aS)-6-methoxy-2-methyl-2-(2-oxopropyl)octahydropyrano[3,2-b]pyran-3-yl)oxy)acrylate