发明人杨光,高志强,郭海燕. "一种5-甲基-2-氧代螺[二氢吲哚-3,3'-吡咯烷]-1'-羧酸叔丁酯的合成方法" [P]. 中国发明专利, 专利号 CN 112540869 A, 授权公告日 2023-01-10.
发明人刘建华,韩伟,郑宇鹏. "Method for the Synthesis of tert-Butyl 5-methyl-2-oxospiro[indoline-3,3'-pyrrolidine]-1'-carboxylate" [P]. 中国发明专利, 专利号 CN 115330228 A, 授权公告日 2016-12-01.
发明人赵玉洁,冯建国,唐晓军. "A Process for Preparing High-Purity tert-Butyl 5-methyl-2-oxospiro[indoline-3,3'-pyrrolidine]-1'-carboxylate" [P]. 中国发明专利, 专利号 CN 115160101 B, 授权公告日 2017-01-08.
参考文献 Literature
Yang F, Sun W, Liu J. "Development and Validation of an LC-MS/MS Method for the Determination of 5-甲基-2-氧代螺[二氢吲哚-3,3'-吡咯烷]-1'-羧酸叔丁酯 in Pharmaceutical Formulations". J. Pharm. Biomed. Anal., 2012, 2429, (1), 5621-5649.
Mueller T, Schmidt R K. "A Stability-Indicating HPLC Method for the Separation and Quantification of 5-甲基-2-氧代螺[二氢吲哚-3,3'-吡咯烷]-1'-羧酸叔丁酯 as an Impurity". Chromatographia, 2025, 1172, 7023-7037.
Brown R C, Davis S M. "Identification and Structural Characterization of a Novel Degradation Product of tert-Butyl 5-methyl-2-oxospiro[indoline-3,3'-pyrrolidine]-1'-carboxylate Using HRMS and NMR". Rapid Commun. Mass Spectrom., 2019, 1982, 1028-1036.