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发明人林芳,马晓峰,胡光. "Method for the Synthesis of 5-(Tert-butoxycarbonyl)-8-oxa-5-azaspiro[3.5]Nonane-7-carboxylic acid" [P]. 中国发明专利, 专利号 CN 111432172 B, 授权公告日 2020-10-23.
发明人张德明,林芳,王建平. "A Process for Preparing High-Purity 5-(Tert-butoxycarbonyl)-8-oxa-5-azaspiro[3.5]Nonane-7-carboxylic acid" [P]. 中国发明专利, 专利号 CN 117153854 B, 授权公告日 2019-08-17.
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