3-cyclopentyl-2-[4-(1H-indol-4-yloxy)-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 3-cyclopentyl-N-[1-((R)-2,2-dimethyl-[1,3]dioxolan-4-ylmethyl)-1H-pyrazol-3-yl]-2-[4-(1H-indol-4-yloxy)-6-oxo-6H-pyridazin-1-yl]-propionamide as a light tan solid的产率得到3-cyclopentyl-N-[1-((R)-2,2-dimethyl-[1,3]dioxolan-4-ylmethyl)-1H-pyrazol-3-yl]-2-[4-(1H-indol-4-yloxy)-6-oxo-6H-pyridazin-1-yl]-propionamide