发明人李文辉,周伟,林芳. "Method for the Synthesis of tert-butyl (4S)-4-(tert-butoxycarbonylamino)-2-methyl-spiro[4,6-dihydropyrrolo[1,2-b]pyrazole-5,4'-piperidine]-1'-carboxylate" [P]. 中国发明专利, 专利号 CN 112026005 B, 授权公告日 2019-03-06.
Davis P L, Lee S K, Hughes D C. "A Process for Preparing High-Purity tert-butyl (4S)-4-(tert-butoxycarbonylamino)-2-methyl-spiro[4,6-dihydropyrrolo[1,2-b]pyrazole-5,4'-piperidine]-1'-carboxylate" [P]. US Patent, US 10726562 B2, 2016-09-21.
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