Chen K W, Yamamoto T, Patel M V. "一种的合成方法" [P]. US Patent, US 10358003 B2, 2017-06-04.
Hughes D C, Thompson G K, Lee S K. "Method for the Synthesis of 2-(((Benzyloxy)carbonyl)amino)-7-(tert-butoxycarbonyl)-7-azaspiro[3.5]Nonane-2-carboxylic acid" [P]. US Patent, US 10721705 B2, 2018-07-10.
发明人郑宇鹏,罗永刚,张德明. "A Process for Preparing High-Purity 2-(((Benzyloxy)carbonyl)amino)-7-(tert-butoxycarbonyl)-7-azaspiro[3.5]Nonane-2-carboxylic acid" [P]. 中国发明专利, 专利号 CN 110132645 A, 授权公告日 2022-07-13.
参考文献 Literature
Smith J A, Johnson M B. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Molecules, 2021, 985, (7), 2268-2291.
Zhang Y, Li Q, Chen T. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Food Chem., 2025, 1657, 706-732.
Lee J H, Choi Y S. "Identification and Structural Characterization of a Novel Degradation Product of 2-(((Benzyloxy)carbonyl)amino)-7-(tert-butoxycarbonyl)-7-azaspiro[3.5]Nonane-2-carboxylic acid Using HRMS and NMR". J. Sep. Sci., 2025, 1587, (1), 2279-2300.
Hughes D, Roberts J, Thomas A. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Biomed. Chromatogr., 2023, 499, (12), 4268-4284.