3-cyclopentyl-2-(4-methoxy-6-oxo-6H-pyridazin-1-yl)-propionic acid 、
1-(3-aminopyrazol-1-yl)-2-methyl-propan-2-ol 以afforded 3-cyclopentyl-N-[1-(2-hydroxy-2-methyl-propyl)-1H-pyrazol-3-yl]-2-(4-methoxy-6-oxo-6H-pyridazin-1-yl)-propionamide as an off-white solid (45.1 mg, 29%)的产率得到3-cyclopentyl-N-[1-(2-hydroxy-2-methyl-propyl)-1H-pyrazol-3-yl]-2-(4-methoxy-6-oxo-6H-pyridazin-1-yl)-propionamide