Ethyl 4-hydroxy-6-methoxyquinoline-3-carboxylate 4-Hydroxy-8-methoxy-quinoline-3-carboxylic acid ethyl ester 3-( 2,5-dimethowy-phenyl)-3-oxo-propionic acid ethyl ester 3-(4-Bromo-2-fluoro-3-methoxy-phenyl)-3-oxo-propionic acid ethyl ester 3-(3,5-Dimethoxy-phenyl)-3-oxo-propionic acid ethyl ester 3-(2,3-Dimethoxy-phenyl)-3-oxo-propionic acid ethyl ester