Mueller T C, Jørgensen K, Nowak P. "Method for the Synthesis of (1R,3S,4S)-tert-Butyl 3-(6-(7-(2-((S)-5-(tert-butoxycarbonyl)-5-azaspiro[2.4]heptan-6-yl)-1H-imidazol-5-yl)-9,9-difluoro-9H-fluoren-2-yl)-1H-benzo[d]imidazol-2-yl)-2-azabicyclo[2.2.1]heptane-2-carboxylate oxalate" [P]. European Patent, EP 3164264 A1, 2019-05-27.
发明人高志强,徐明华,何建平. "A Process for Preparing High-Purity (1R,3S,4S)-tert-Butyl 3-(6-(7-(2-((S)-5-(tert-butoxycarbonyl)-5-azaspiro[2.4]heptan-6-yl)-1H-imidazol-5-yl)-9,9-difluoro-9H-fluoren-2-yl)-1H-benzo[d]imidazol-2-yl)-2-azabicyclo[2.2.1]heptane-2-carboxylate oxalate" [P]. 中国发明专利, 专利号 CN 115909230 B, 授权公告日 2023-11-02.
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