Kumar R, Roberts E F, Thompson G K. "一种的合成方法" [P]. US Patent, US 11082358 B2, 2017-03-11.
Mueller T, Roberts E F, Stevens L M. "Method for the Synthesis of Tert-butyl (S)-5-methyl-2,7-diazaspiro[3.5]Nonane-2-carboxylate" [P]. US Patent, US 9191326 B2, 2016-11-09.
Sørensen M, Rossi M, Nielsen H. "A Process for Preparing High-Purity Tert-butyl (S)-5-methyl-2,7-diazaspiro[3.5]Nonane-2-carboxylate" [P]. European Patent, EP 3592100 A1, 2021-10-16.
参考文献 Literature
Zhang Y, Li Q, Chen T. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Phytochemistry, 2011, 1360, (12), 2184-2212.
Kim S H, Park J Y. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Chemosphere, 2014, 1957, (5), 5092-5109.
O'Brien K, Kennedy M L. "Identification and Structural Characterization of a Novel Degradation Product of Tert-butyl (S)-5-methyl-2,7-diazaspiro[3.5]Nonane-2-carboxylate Using HRMS and NMR". Rapid Commun. Mass Spectrom., 2014, 520, 6639-6647.
Yamamoto K, Tanaka H, Suzuki T. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Molecules, 2011, 274, (1), 1047-1064.