ethyl 2-((2R,3S,4aR,5aS,9aR,10aS)-8-methoxy-3,4a-dimethyl-3-((trimethylsilyl)oxy)decahydro-2H-dipyrano[3,2-b:2',3'-e]pyran-2-yl)acetate

(2R,3S,4aR,6S,7R,8aS)-6-(2-(1,3-dithian-2-yl)ethyl)-2-allyl-3,4a-dimethyloctahydropyrano[3,2-b]pyran-3,7-diol

ethyl (E)-3-(((2S,3R,4aS,6R,7S,8aR)-2-(2-(1,3-dithian-2-yl)ethyl)-6-allyl-7-hydroxy-7,8a-dimethyloctahydropyrano[3,2-b]pyran-3-yl)oxy)acrylate

ethyl (E)-3-(((2S,3R,4aS,6R,7S,8aR)-2-(2-(1,3-dithian-2-yl)ethyl)-6-allyl-7-((tert-butyldimethylsilyl)oxy)-7,8a-dimethyloctahydropyrano[3,2-b]pyran-3-yl)oxy)acrylate