(S)-1,2,3,4-tetrahydro-6,7-dimethoxy-2-(tert-butyloxycarbonyl)-3-isoquinolinecarboxylic acid

4-(3,4-dimethoxy-benzylidene)-2-phenyl-4H-oxazol-5-one

methyl (Z)-2-benzoylamino-3-(3,4-dimethoxyphenyl)-2-propenoate

3,4-二甲氧基苯甲醛

(S)-(+)-methyl 2-benzoylamino-3-(3,4-dimethoxyphenyl)propanoate