金刚烷杂质18 、
N,N'-羰基二咪唑 、 N-[2-(4-amino-1-piperidinyl)ethyl]-1-(2-propyl)-1H-indazole-3-carboxamide dioxalate 以
N-甲基乙酰胺 为溶剂,
以0.71 g (55%)的产率得到N-[2-(4-(4-hydroxy-1-adamantylcarbonylamino)-1-piperidinyl)ethyl]-1-(2-propyl)-1H-indazole-3-carboxamide oxalate