(3S,4R,5R)-4-Acetoxy-5-(tert-butyl-dimethyl-silanyloxy)-3-hydroxy-cyclohex-1-enecarboxylic acid methyl ester

methyl (3R,4S,5R)-3-benzoyloxy-4,5-dihydroxy-cyclohex-1-en-1-carboxylate

(1R,5R,6R)-methyl 5-(benzoyloxy)-7-oxabicyclo[4.1.0]hept-3-ene-3-carboxylate