3-cyclopentyl-2-(4-cyclopentyloxy-6-oxo-6H-pyridazin-1-yl)-propionic acid 、
1-(3-aminopyrazol-1-yl)-2-methyl-propan-2-ol 以afforded 3-cyclopentyl-2-(4-cyclopentyloxy-6-oxo-6H-pyridazin-1-yl)-N-[1-(2-hydroxy-2-methyl-propyl)-1H-pyrazol-3-yl]-propionamide (49.8 mg, 23%) as a white solid的产率得到3-cyclopentyl-2-(4-cyclopentyloxy-6-oxo-6H-pyridazin-1-yl)-N-[1-(2-hydroxy-2-methyl-propyl)-1H-pyrazol-3-yl]-propionamide