发明人王建平,唐晓军,何建平. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 113142256 A, 授权公告日 2017-05-11.
发明人孙丽萍,何建平,王建平. "Method for the Synthesis of 4-((4-Methoxyphenyl)sulfonyl)-1-oxa-4,8-diazaspiro[4.5]decane" [P]. 中国发明专利, 专利号 CN 117348279 B, 授权公告日 2020-08-16.
发明人黄志刚,郭海燕,郑宇鹏. "A Process for Preparing High-Purity 4-((4-Methoxyphenyl)sulfonyl)-1-oxa-4,8-diazaspiro[4.5]decane" [P]. 中国发明专利, 专利号 CN 109950146 B, 授权公告日 2018-05-01.
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