Stevens L M, Yamamoto T, Thompson G K. "Method for the Synthesis of 8-Benzyl-4-(4-nitrobenzoyl)-1-oxa-4,8-diazaspiro[4.5]decane-3-carboxylic acid" [P]. US Patent, US 11459204 B2, 2018-08-12.
发明人郑宇鹏,钱学锋,马晓峰. "A Process for Preparing High-Purity 8-Benzyl-4-(4-nitrobenzoyl)-1-oxa-4,8-diazaspiro[4.5]decane-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 113912260 A, 授权公告日 2025-02-07.
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