methyl (1S,4R,4aS,6S,8S,8aR)-8-((tert-butyldimethylsilyl)oxy)-6-hydroxy-5-oxo-1,4,4a,5,6,7,8,8a-octahydro-1,4-methanonaphthalene-6-carboxylate

methyl (1R,2aS,2a¹S,5R,5aS,6R,7aS,8R)-8-bromo-5-((tert-butyldimethylsilyl)oxy)-1,2a,2a¹,5,5a,6,7,7a-octahydro-1,6-methanoindeno[7,1-bc]furan-3-carboxylate

(1S,4R,4aS,5S,6S,8S,8aR)-methyl 8-((tert-butyldimethylsilyl)oxy)-5,6-dihydroxy-1,4,4a,5,6,7,8,8a-octahydro-1,4-methanonaphthalene-6-carboxylate

methyl (1R,2aS,2a¹S,3S,5S,5aS,6R,7aS,8R)-8-bromo-5-((tert-butyldimethylsilyl)oxy)-3-hydroxydecahydro-1,6-methanoindeno[7,1-bc]furan-3-carboxylate

((1R,2aS,2a¹S,5R,5aS,6R,7aS,8R)-5-(benzoyloxy)-8-bromo-1,2a,2a¹,5,5a,6,7,7a-octahydro-1,6-methanoindeno[7,1-bc]furan-3-yl)methyl benzoate