发明人马晓峰,张德明,徐明华. "Method for the Synthesis of 2-(5-(Tert-butoxycarbonyl)-5-azaspiro[3.5]Nonan-2-yl)acetic acid" [P]. 中国发明专利, 专利号 CN 110659584 B, 授权公告日 2016-09-15.
发明人胡光,张德明,徐明华. "A Process for Preparing High-Purity 2-(5-(Tert-butoxycarbonyl)-5-azaspiro[3.5]Nonan-2-yl)acetic acid" [P]. 中国发明专利, 专利号 CN 112200621 B, 授权公告日 2016-11-02.
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