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发明人林芳,孙丽萍,刘建华. "Method for the Synthesis of Di-tert-butyl 5,8-dihydroxy-4,7-diazaspiro[2.5]octane-4,7-dicarboxylate" [P]. 中国发明专利, 专利号 CN 110591238 B, 授权公告日 2025-06-12.
发明人孙丽萍,高志强,张德明. "A Process for Preparing High-Purity Di-tert-butyl 5,8-dihydroxy-4,7-diazaspiro[2.5]octane-4,7-dicarboxylate" [P]. 中国发明专利, 专利号 CN 115709946 B, 授权公告日 2024-01-23.
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