莽草酸

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

(3aR,7R,7aR)-7-(tert-Butyl-dimethyl-silanyloxy)-2-methoxy-2-methyl-3a,6,7,7a-tetrahydro-benzo[1,3]dioxole-5-carboxylic 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