5,6-Dihydro-8,9-dimethoxypyrrolo<2,1-a>isochinolin-2-carbonsaeure

t-butyl-2-(4,5-dimethoxy-2-pent-4-enoylphenyl)-ethylcarbamate

6,7-dimethoxy-1-oxo-3,4-dihydro-1H-isoquinoline-2-carboxylic acid tert-butyl ester

3-[(3,4-dimethoxy-phenyl)-2-ethylaminocarbonyl]-furan-4-carboxylic acid ethyl ester

4-(3,4-Dihydro-6,7-dimethoxy-1-isochinolinyl)-3-furancarbonsaeure-ethylester