Anderson J P, Mueller T, Brown S R. "一种的合成方法" [P]. US Patent, US 11953110 B2, 2023-11-03.
发明人郑宇鹏,唐晓军,钱学锋. "Method for the Synthesis of Tert-butyl 5-methyl-2-(2-oxo-2-phenylethyl)-2,7-diazaspiro[3.5]Nonane-7-carboxylate" [P]. 中国发明专利, 专利号 CN 117469492 A, 授权公告日 2023-03-03.
发明人郭海燕,高志强,李文辉. "A Process for Preparing High-Purity Tert-butyl 5-methyl-2-(2-oxo-2-phenylethyl)-2,7-diazaspiro[3.5]Nonane-7-carboxylate" [P]. 中国发明专利, 专利号 CN 112315600 A, 授权公告日 2020-12-24.
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