3-hydroxy-2-(2-phenylpropan-2-yl)-7,8,9,10-tetrahydrobenzo[h]quinoline-4-carboxylic acid 、 、
6,7-二甲基-1H-吲哚-2,3-二酮 、
1-hydroxy-4-methyl-3-phenylpentan-2-one 以to yield the desired product (12.5 mg, 6.0%) as a yellow solid的产率得到3-hydroxy-7,8-dimethyl-2-(2-methyl-1-phenylpropyl)quinoline-4-carboxylic acid