1-(4,6-dichloro-1,5-naphthyridin-3-yl)ethanone 、
N2-[2-(dimethylamino)ethyl]pyridine-2,5-diamine 以to afford the desired product (210 mg, 37%) as an orange solid的产率得到1-(6-chloro-4-{6-[2-(dimethylamino)ethylamino]pyridin-3-ylamino}-1,5-naphthyridin-3-yl)ethanone