发明人孙丽萍,郭海燕,张德明. "Method for the Synthesis of Tert-butyl 3',4'-dihydro-2'H-spiro[pyrrolidine-3,1'-pyrrolo[1,2-a]pyrazine]-1-carboxylate" [P]. 中国发明专利, 专利号 CN 110195284 A, 授权公告日 2023-09-03.
发明人何建平,杨光,孙丽萍. "A Process for Preparing High-Purity Tert-butyl 3',4'-dihydro-2'H-spiro[pyrrolidine-3,1'-pyrrolo[1,2-a]pyrazine]-1-carboxylate" [P]. 中国发明专利, 专利号 CN 109915176 B, 授权公告日 2025-03-18.
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