3-iodo-7(S)-methyl-5-(4-trifluoromethylphenyl)-6,7-dihydro-5H-pyrazolo[1,5-a]pyrazin-4-one 、
2-(2-hydroxyethylamino)pyridine-3-carboxamide 在
potassium phosphate 、
三乙胺 、 trans-1,2-cyclohexanediamine 作用下,
以
1,4-二氧六环 为溶剂,
生成 2-(2-hydroxyethylamino)-N-[(7S)-7-methyl-4-oxo-5-[4-(trifluoromethyl)phenyl]-6,7-dihydropyrazolo[1,5-a]pyrazin-3-yl]pyridine-3-carboxamide