(1Z)-2-[5-cyano-2-propyl-4-(trifluoromethyl)-1H-indol-1-yl]-N-hydroxyethanimidamide 、
5-chloro-1,3-dimethyl-1H-pyrazolo[3,4-b]pyridine-6-carbonyl chloride 在
三乙胺 作用下,
以
乙腈 为溶剂,
反应 0.5h,
以77%的产率得到1-{[5-(5-chloro-1,3-dimethyl-1H-pyrazolo[3,4-b]pyridin-6-yl)-1,2,4-oxadiazol-3-yl]methyl}-2-propyl-4-(trifluoromethyl)-1H-indole-5-carbonitrile