Nowak P, Schröder R, Nielsen H. "一种的合成方法" [P]. European Patent, EP 3447434 A1, 2017-06-14.
Anderson J P, Schröder R, Fischer A B. "Method for the Synthesis of Tert-butyl (3R,6S)-6-(bromomethyl)-1,1-difluoro-5-azaspiro[2.4]Heptane-5-carboxylate" [P]. US Patent, US 11766456 B2, 2024-02-18.
参考文献 Literature
Kowalski T, Nowak Z. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Biomed. Chromatogr., 2013, 106, (3), 6305-6326.
Zhang Y, Li Q, Chen T. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Chim. Acta, 2023, 1416, (8), 8306-8314.
Zhou X P, Huang L, Wu G. "Identification and Structural Characterization of a Novel Degradation Product of Tert-butyl (3R,6S)-6-(bromomethyl)-1,1-difluoro-5-azaspiro[2.4]Heptane-5-carboxylate Using HRMS and NMR". Phytochemistry, 2010, 859, (3), 1323-1342.
Hughes D, Roberts J, Thomas A. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Pharm. Biomed. Anal., 2024, 1776, (3), 2162-2182.