发明人李文辉,张德明,黄志刚. "Method for the Synthesis of 5-(tert-Butoxycarbonyl)-5-azaspiro[2.4]heptane-1-carboxylic acid" [P]. 中国发明专利, 专利号 CN 114710002 A, 授权公告日 2022-05-26.
发明人沈红梅,张德明,孙丽萍. "A Process for Preparing High-Purity 5-(tert-Butoxycarbonyl)-5-azaspiro[2.4]heptane-1-carboxylic acid" [P]. 中国发明专利, 专利号 CN 114968039 A, 授权公告日 2017-03-01.
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