8-[(1R)-1-aminoethyl]-3,6-dimethyl-2-(2-methylindazol-5-yl)chromen-4-one 、
methyl 4-chloro-6-methyl-2-oxo-1H-pyridine-3-carboxylate 在
三乙胺 作用下,
以
甲醇 为溶剂,
以100%的产率得到methyl 4-[[(1R)-1-[3,6-dimethyl-2-(2-methylindazol-5-yl)-4-oxo-chromen-8-yl]ethyl]amino]-6-methyl-2-oxo-1H-pyridine-3-carboxylate