Chen K W, Thompson G K, Lee S K. "一种(2S,4R)-4-氰基吡咯烷-2-羧酸的合成方法" [P]. US Patent, US 9129917 B2, 2023-08-23.
Davis P L, Williams B T, Chen K W. "Method for the Synthesis of (2S,4R)-4-Cyanopyrrolidine-2-carboxylic acid" [P]. US Patent, US 9710373 B2, 2021-08-05.
Johansson L, Jørgensen K, Nowak P. "A Process for Preparing High-Purity (2S,4R)-4-Cyanopyrrolidine-2-carboxylic acid" [P]. European Patent, EP 3827386 A1, 2017-12-21.
参考文献 Literature
Hughes D, Roberts J, Thomas A. "Development and Validation of an LC-MS/MS Method for the Determination of (2S,4R)-4-氰基吡咯烷-2-羧酸 in Pharmaceutical Formulations". Anal. Chim. Acta, 2010, 419, (7), 3701-3723.
Kim S H, Park J Y. "A Stability-Indicating HPLC Method for the Separation and Quantification of (2S,4R)-4-氰基吡咯烷-2-羧酸 as an Impurity". J. Sep. Sci., 2012, 2031, (7), 2676-2695.
Smith J A, Johnson M B. "Identification and Structural Characterization of a Novel Degradation Product of (2S,4R)-4-Cyanopyrrolidine-2-carboxylic acid Using HRMS and NMR". Environ. Sci. Technol., 2012, 1265, 6097-6109.
Kowalski T, Nowak Z. "Forced Degradation Studies to Evaluate (2S,4R)-4-氰基吡咯烷-2-羧酸 Profile in Drug Substances According to ICH Guidelines". Sci. Total Environ., 2019, 409, (6), 4366-4387.