4-[(3-bromophenyl)amino]-6,7-dimethoxy-3-quinolinecarboxylic acid ethyl ester

ethyl 2-bromo-4-chloro-6,7-dimethoxyquinoline-3-carboxylate

ethyl 2-(benzo[d][1,3]dioxol-5-yl)-6,7-dimethoxy-4-oxo-1,4-dihydroquinoline-3-carboxylate

ethyl 2-([1,1'-biphenyl]-3-yl)-6,7-dimethoxy-4-oxo-1,4-dihydroquinoline-3-carboxylate