8-ethyl-3-hydroxy-2-(1-phenylcyclopropyl)quinoline-4-carboxylic acid 、
5-氯靛红 、
2-(1-(4-chlorophenyl)cyclopropyl)-2-oxoethyl acetate 以to yield Compound 22 (0.101 g, 27% yield)的产率得到6-chloro-2-(1-(4-chlorophenyl)cyclopropyl)-3-hydroxyquinoline-4-carboxylic acid