(3R,8aR)-3-[1-Bromo-2-(2,5-dimethoxy-3,4,6-trimethyl-phenyl)-ethyl]-3-methyl-tetrahydro-pyrrolo[2,1-c][1,4]oxazine-1,4-dione

4-(2,5-Dimethoxy-3,4,6-trimethylphenyl)-2-oxobutansaeure

(S)-4-(2,5-Dimethoxy-3,4,6-trimethylphenyl)-2-hydroxybutansaeure

(S)-4-(2',5'-dimethoxy-3',4',6'-trimethylphenyl)-2-hydroxy-2-methylbutanoic acid

4-(2,5-Dimethoxy-3,4,6-trimethylphenyl)-2-oxobutansaeure-[(1S)-1-(benzylcarbamoyl)-ethyl]ester