3-cyclopentyl-2-[4-(2,6-difluoro-phenoxy)-6-oxo-6H-pyridazin-1-yl]-N-[1-((S)-2,2-dimethyl-[1,3]dioxolan-4-ylmethyl)-1H-pyrazol-3-yl]-propionamide 、
对甲苯磺酸一水合物 在
Silica gel 、
methanol-dichloromethane 作用下,
以
甲醇 为溶剂,
反应 16.0h,
以Silica gel column chromatography (AnaLogix 8 g, 1-10% methanol/methylene chloride) afforded 3-cyclopentyl-2-[4-(2,6-difluoro-phenoxy)-6-oxo-6H-pyridazin-1-yl]-N-[1-((S)-2,3-dihydroxy-propyl)-1H-pyrazol-3-yl]-propionamide (110.3 mg, 84%) as an off-white solid的产率得到3-cyclopentyl-2-[4-(2,6-difluoro-phenoxy)-6-oxo-6H-pyridazin-1-yl]-N-[1-((S)-2,3-dihydroxy-propyl)-1H-pyrazol-3-yl]-propionamide