Yamamoto T, Schröder R, Park J H. "一种的合成方法" [P]. US Patent, US 9650471 B2, 2018-03-22.
Nielsen H, Jørgensen K, Johansson L. "Method for the Synthesis of tert-Butyl (7R,8R)-7-fluoro-8-hydroxy-2-azaspiro[4.4]nonane-2-carboxylate" [P]. European Patent, EP 3711913 A1, 2024-03-03.
发明人韩伟,朱建伟,何建平. "A Process for Preparing High-Purity tert-Butyl (7R,8R)-7-fluoro-8-hydroxy-2-azaspiro[4.4]nonane-2-carboxylate" [P]. 中国发明专利, 专利号 CN 112444029 B, 授权公告日 2017-01-20.
参考文献 Literature
Xu M, Hu Y, Zhou D. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Chromatographia, 2016, 1923, (3), 6542-6562.
Xu M, Hu Y, Zhou D. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Environ. Sci. Technol., 2016, 1239, 4361-4368.
Yamamoto K, Tanaka H, Suzuki T. "Identification and Structural Characterization of a Novel Degradation Product of tert-Butyl (7R,8R)-7-fluoro-8-hydroxy-2-azaspiro[4.4]nonane-2-carboxylate Using HRMS and NMR". Rapid Commun. Mass Spectrom., 2020, 2207, 6929-6940.