sodium hydroxide 、
ethyl (3-{[4-(3,3-dimethyl-1-oxo-2-oxa-7-azaspiro[4.5]dec-7-yl)piperidin-1-yl]carbonyl}-4-{[(ethylamino)carbonyl]amino}phenoxy)acetate 在
四氢呋喃 、
异丙醇 、
异丙醚 作用下,
以
甲醇 为溶剂,
反应 16.0h,
以to give the title compound (161 mg, yield 41%) as a powder的产率得到(3-{[4-(3,3-dimethyl-1-oxo-2-oxa-7-azaspiro[4.5]dec-7-yl)piperidin-1-yl]carbonyl}-4-{[(ethylamino)carbonyl]amino}phenoxy)acetic acid sodium salt