发明人刘建华,朱建伟,何建平. "Method for the Synthesis of 3-(tert-Butoxycarbonyl)-3-azaspiro[5.5]undecane-9-carboxylic acid" [P]. 中国发明专利, 专利号 CN 115893189 A, 授权公告日 2018-03-28.
发明人胡光,钱学锋,罗永刚. "A Process for Preparing High-Purity 3-(tert-Butoxycarbonyl)-3-azaspiro[5.5]undecane-9-carboxylic acid" [P]. 中国发明专利, 专利号 CN 111296162 A, 授权公告日 2015-01-27.
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