发明人黄志刚,胡光,何建平. "Method for the Synthesis of tert-Butyl 4-hydroxy-7,8-dihydropyrido[4',3':3,4]pyrazolo[1,5-a]pyrimidine-9(10H)-carboxylate" [P]. 中国发明专利, 专利号 CN 114532724 B, 授权公告日 2022-01-12.
发明人唐晓军,马晓峰,朱建伟. "A Process for Preparing High-Purity tert-Butyl 4-hydroxy-7,8-dihydropyrido[4',3':3,4]pyrazolo[1,5-a]pyrimidine-9(10H)-carboxylate" [P]. 中国发明专利, 专利号 CN 109248036 A, 授权公告日 2020-03-23.
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