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

methyl (3aS,4S,5R,7R,7aR)-4-((1H-imidazole-1-carbonothioyl)oxy)-5-acetoxy-7-((tert-butyldimethylsilyl)oxy)-2,2-dimethylhexahydrobenzo[d][1,3]dioxole-5-carboxylate

(1R,3S,4R,5R)-methyl 1-acetoxy-5-((tert-butyldimethylsilyl)oxy)-3,4-dihydroxy-2-oxocyclohexanecarboxylate

(3R,4S,5R)-3,5-bis{[(tert-butyl)dimethylsilyl]oxy}-4-hydroxycyclohex-1-ene-1-carboxylic acid methyl ester