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

Methyl (3R,4S,5R)-5-Hydroxy-3,4-<(methoxymethylene)dioxy>cyclohex-1-ene-1-carboxylate

Methyl (3R,4R,5R)-5-<(tert-Butyl)dimethylsilyloxy>-3,4-dihydroxycyclohex-1-ene-1-carboxylate