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发明人林芳,孙丽萍,李文辉. "Method for the Synthesis of Potassium (S)-5-(tert-butoxycarbonyl)-5-azaspiro[2.4]heptane-6-carboxylate, 97%" [P]. 中国发明专利, 专利号 CN 114223732 B, 授权公告日 2019-06-21.
发明人王建平,朱建伟,孙丽萍. "A Process for Preparing High-Purity Potassium (S)-5-(tert-butoxycarbonyl)-5-azaspiro[2.4]heptane-6-carboxylate, 97%" [P]. 中国发明专利, 专利号 CN 111649765 A, 授权公告日 2017-08-25.
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