Klinger H, Schröder R, Patel M V. "一种的合成方法" [P]. US Patent, US 11242044 B2, 2020-08-19.
发明人郑宇鹏,张德明,何建平. "Method for the Synthesis of Tert-butyl 5-hydroxy-2-methyl-3-oxo-2,9-diazaspiro[5.5]Undecane-9-carboxylate" [P]. 中国发明专利, 专利号 CN 117539793 A, 授权公告日 2022-05-17.
发明人王建平,高志强,钱学锋. "A Process for Preparing High-Purity Tert-butyl 5-hydroxy-2-methyl-3-oxo-2,9-diazaspiro[5.5]Undecane-9-carboxylate" [P]. 中国发明专利, 专利号 CN 109144178 B, 授权公告日 2015-03-06.
参考文献 Literature
Wang L, Li J, Zhang H. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Rapid Commun. Mass Spectrom., 2014, 2078, (9), 696-722.
Fischer P, Wagner E. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Agric. Food Chem., 2011, 2192, (2), 2418-2429.
Yamamoto K, Tanaka H, Suzuki T. "Identification and Structural Characterization of a Novel Degradation Product of Tert-butyl 5-hydroxy-2-methyl-3-oxo-2,9-diazaspiro[5.5]Undecane-9-carboxylate Using HRMS and NMR". Biomed. Chromatogr., 2013, 1383, (6), 5976-5985.