p-benzoquinone-2,3-dicarboxylic acid dimethyl ester

8,9-[Di(tert-butyl)silylenedioxy]-1',5,6,9'-tetramethoxy-3'-methyl-4-phenylthio-6',7'-dihydrospiro[2H-benz[f]indene-2,8'-8'H-cyclopent[g]isoquinoline]-1,3-dione

1,8-Dimethoxy-3-((1E,3E)-penta-1,3-dienyl)-6-vinyl-isoquinoline-7-carboxylic acid methyl ester

8-methoxy-7-methoxycarbonyl-3,6-dimethyl-1(2H)-isoquinolone

1,8-dimethoxy-3-dimethoxymethyl-7-methoxycarbonyl-6-(2'-phenylethenyl)isoquinoline