2,4-dichloro-6-[2-(3-methoxy-phenyl)-propionylamino]-benzoic acid methyl ester 、
哌嗪 、
potassium carbonate 在
(R)-1-benzyl-7-chloro-3-(4-methoxy-phenyl)-3-methyl-5-piperazin-1-yl-1H-quinoline-2,4-dione 、
二氯甲烷 、
甲醇 作用下,
以to afford the pure title compound (0.17 g, 73%) as a yellow solid的产率得到(R)-1-benzyl-7-chloro-3-(4-methoxy-phenyl)-3-methyl-5-piperazin-1-yl-1H-quinoline-2,4-dione