ethyl 1-[5-(3-{[2-(difluoromethoxy)phenyl]methyl}-2-methylimidazo[1,2-a]pyrazin-6-yl)pyridin-2-yl]piperidine-4-carboxylate 在
水 、 potassium hydroxide 作用下,
以
乙醇 为溶剂,
以23%的产率得到1-[5-(3-{[2-(difluoromethoxy)phenyl]methyl}-2-methylimidazo[1,2-a]pyrazin-6-yl)pyridin-2-yl]piperidine-4-carboxylic acid