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发明人冯建国,周伟,高志强. "Method for the Synthesis of (1R,4R,5R)-3-Oxo-2-oxabicyclo[2.2.1]heptane-5-carboxylic acid cinchonidine salt" [P]. 中国发明专利, 专利号 CN 108746050 B, 授权公告日 2019-03-20.
发明人冯建国,张德明,孙丽萍. "A Process for Preparing High-Purity (1R,4R,5R)-3-Oxo-2-oxabicyclo[2.2.1]heptane-5-carboxylic acid cinchonidine salt" [P]. 中国发明专利, 专利号 CN 112316230 B, 授权公告日 2020-06-02.
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