发明人陈志强,罗永刚,李文辉. "一种6-氨基-2-氧代螺[二氢吲哚-3,4'-哌啶]-1'-羧酸叔丁酯的合成方法" [P]. 中国发明专利, 专利号 CN 109845563 A, 授权公告日 2022-07-04.
发明人黄志刚,孙丽萍,郭海燕. "Method for the Synthesis of tert-Butyl 6-amino-2-oxospiro[indoline-3,4'-piperidine]-1'-carboxylate" [P]. 中国发明专利, 专利号 CN 113301625 A, 授权公告日 2020-08-20.
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