发明人高志强,王建平,李文辉. "Method for the Synthesis of 4-(4-Chloro-2-fluorobenzoyl)-8-methyl-1-oxa-4,8-diazaspiro[4.5]decane-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 111354938 B, 授权公告日 2016-02-10.
发明人林芳,钱学锋,何建平. "A Process for Preparing High-Purity 4-(4-Chloro-2-fluorobenzoyl)-8-methyl-1-oxa-4,8-diazaspiro[4.5]decane-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 113908560 B, 授权公告日 2017-03-03.
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