发明人罗永刚,刘建华,郭海燕. "一种1'-苄基螺[1H-2-苯并呋喃-3,4'-哌啶]-1-羧酸的合成方法" [P]. 中国发明专利, 专利号 CN 115560555 A, 授权公告日 2024-02-23.
发明人孙丽萍,钱学锋,林芳. "Method for the Synthesis of 1'-Benzylspiro[1H-2-benzofuran-3,4'-piperidine]-1-carboxylic acid" [P]. 中国发明专利, 专利号 CN 113773672 A, 授权公告日 2024-02-26.
发明人马晓峰,李文辉,韩伟. "A Process for Preparing High-Purity 1'-Benzylspiro[1H-2-benzofuran-3,4'-piperidine]-1-carboxylic acid" [P]. 中国发明专利, 专利号 CN 114086336 A, 授权公告日 2017-11-11.
参考文献 Literature
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