3-cyclopentyl-2-{4-[2-(2-hydroxy-ethyl)-phenoxy]-6-oxo-6H-pyridazin-1-yl}-propionic acid 、
(R)-1-((2,2-Dimethyl-1,3-dioxolan-4-yl)methyl)-1H-pyrazole-3-amine 以afforded impure 3-cyclopentyl-N-[1-((R)-2,2-dimethyl-[1,3]dioxolan-4-ylmethyl)-1H-pyrazol-3-yl]-2-{4-[2-(2-hydroxy-ethyl)-phenoxy]-6-oxo-6H-pyridazin-1-yl}-propionamide as a white foam的产率得到3-cyclopentyl-N-[1-((R)-2,2-dimethyl-[1,3]dioxolan-4-ylmethyl)-1H-pyrazol-3-yl]-2-{4-[2-(2-hydroxy-ethyl)-phenoxy]-6-oxo-6H-pyridazin-1-yl}-propionamide