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发明人林芳,张德明,冯建国. "Method for the Synthesis of 8-Benzyl-4-(2-ethylbutanoyl)-1-oxa-4,8-diazaspiro[4.5]decane-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 110982963 A, 授权公告日 2021-12-25.
发明人杨光,高志强,冯建国. "A Process for Preparing High-Purity 8-Benzyl-4-(2-ethylbutanoyl)-1-oxa-4,8-diazaspiro[4.5]decane-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 117533919 B, 授权公告日 2023-07-18.
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