6-methyl-7-(1-(1-(2,2,2-trifluoroethyl)piperidin-4-yl)ethyl)pyrrolo[1,2-b]pyridazine-5-carboxylic acid 、
3-(aminomethyl)-4-methoxy-6-methylpyridin-2(1H)-one 、
三乙胺 、 (1-Cyano-2-ethoxy-2-oxoethylidenaminooxy)dimethylamino-morpholino-carbenium hexafluorophosphate 、
N,N-二甲基甲酰胺 在
氮 、
乙酸乙酯 、
水 、
Sodium sulfate-III 、 crude material 作用下,
反应 3.0h,
以Gradient: B in A 47-77%) to afford 7-(1-(1-(2-fluoro-2-methylpropyl)piperidin-4-yl)ethyl)-N-((4-methoxy-6-methyl-2-oxo-1,2-dihydropyridin-3-yl)methyl)-6-methylpyrrolo[1,2-b]pyridazine-5-carboxamide (3.6 mg, 13% yield)的产率得到7-(1-(1-(2-fluoro-2-methylpropyl)piperidin-4-yl)ethyl)-N-((4-methoxy-6-methyl-2-oxo-1,2-dihydropyridin-3-yl)methyl)-6-methylpyrrolo[1,2-b]pyridazine-5-carboxamide