发明人何建平,孙丽萍,韩伟. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 110397469 A, 授权公告日 2019-09-15.
发明人郭海燕,王建平,徐明华. "Method for the Synthesis of 2-(6'-Methyl-8'-oxo-3',4'-dihydro-8'H-spiro[cyclohexane-1,2'-pyrano[3,2-g]chromen]-7'-yl)acetic acid" [P]. 中国发明专利, 专利号 CN 110687927 B, 授权公告日 2018-06-17.
发明人赵玉洁,林芳,周伟. "A Process for Preparing High-Purity 2-(6'-Methyl-8'-oxo-3',4'-dihydro-8'H-spiro[cyclohexane-1,2'-pyrano[3,2-g]chromen]-7'-yl)acetic acid" [P]. 中国发明专利, 专利号 CN 115062868 B, 授权公告日 2021-02-21.
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