7-methoxy-4-(dimethoxymethyl)-1-methyl-5-nitro-6-oxiquinolinium

7,8-Dimethoxy-3,4-dihydro-1H-pyrrolo[4,3,2-de]quinoline-5-carboxylic acid methyl ester

5-Amino-4-dimethoxymethyl-6,7-dimethoxy-3,4-dihydro-2H-quinoline-1-carboxylic acid methyl ester

7,8-Dihydroxy-1-(toluene-4-sulfonyl)-3,4-dihydro-1H-pyrrolo[4,3,2-de]quinoline-5-carboxylic acid methyl ester

7,8-Dimethoxy-1-(toluene-4-sulfonyl)-3,4-dihydro-1H-pyrrolo[4,3,2-de]quinoline-5-carboxylic acid methyl ester