发明人杨光,周伟,冯建国. "Method for the Synthesis of 4-(2-Ethoxybenzoyl)-8-methyl-1-oxa-4,8-diazaspiro[4.5]decane-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 112692663 A, 授权公告日 2021-11-21.
Williams B T, Lee S K, Fischer A B. "A Process for Preparing High-Purity 4-(2-Ethoxybenzoyl)-8-methyl-1-oxa-4,8-diazaspiro[4.5]decane-3-carboxylic acid" [P]. US Patent, US 10942564 B2, 2023-03-11.
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