发明人林芳,郑宇鹏,刘建华. "一种7-(4-甲砜基苯基)-5,8-二氮杂螺[3.4]辛烷-6-酮的合成方法" [P]. 中国发明专利, 专利号 CN 113571586 A, 授权公告日 2019-05-22.
发明人胡光,马晓峰,徐明华. "Method for the Synthesis of 7-[4-(Methylsulfonyl)phenyl]-5,8-diazaspiro[3.4]octan-6-one" [P]. 中国发明专利, 专利号 CN 116716843 B, 授权公告日 2019-06-03.
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