7-(1-(1-(2-hydroxy-2-methylpropyl)piperidin-4-yl)ethyl)-2-methoxy-6-methylpyrrolo[1,2-b]pyridazine-5-carboxylic acid 、
3-(氨基甲基)-4,6-二甲基-1,2-二氢吡啶-2-酮 以to produce Compound 127的产率得到N-((4,6-dimethyl-2-oxo-1,2-dihydropyridin-3-yl)methyl)-7-(1-(1-(2-hydroxy-2-methylpropyl)piperidin-4-yl)ethyl)-2-methoxy-6-methylpyrrolo[1,2-b]pyridazine-5-carboxamide