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发明人何建平,赵玉洁,钱学锋. "Method for the Synthesis of (S)-2-(tert-butoxycarbonyl)-5-oxa-2-azaspiro[3.4]Octane-8-carboxylic acid" [P]. 中国发明专利, 专利号 CN 112623621 A, 授权公告日 2017-10-03.
发明人王建平,朱建伟,周伟. "A Process for Preparing High-Purity (S)-2-(tert-butoxycarbonyl)-5-oxa-2-azaspiro[3.4]Octane-8-carboxylic acid" [P]. 中国发明专利, 专利号 CN 113627280 B, 授权公告日 2017-08-05.
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