tert-Butyl 4-{5-[3-butyryl-6-(3-chloro-5-fluoro-4-hydroxyphenyl)quinolin-4-ylamino]pyridin-2-yl}piperazine-1-carboxylate 、
三氟乙酸 以to afford the desired product (39 mg, 51% over two steps) as a yellow solid的产率得到1-{6-(3-chloro-5-fluoro-4-hydroxyphenyl)-4-[6-(piperazin-1-yl)pyridin-3-ylamino]quinolin-3-yl}butan-1-one