发明人胡光,韩伟,钱学锋. "Method for the Synthesis of Tert-butyl 1-isopropyl-7-oxo-1,4,6,7-tetrahydrospiro[indazole-5,4'-piperidine]-1'-carboxylate" [P]. 中国发明专利, 专利号 CN 111036688 A, 授权公告日 2015-12-22.
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