1207836-10-9Relevant articles and documents
Regioselective Synthesis of Pyrazolo[1,5- a]pyridine via TEMPO-Mediated [3 + 2] Annulation-Aromatization of N-Aminopyridines and α,β-Unsaturated Compounds
Wang, Amu,Liu, Ya-Zhou,Shen, Zhongke,Qiao, Zeen,Ma, Xiaofeng
supporting information, p. 1454 - 1459 (2022/03/01)
A TEMPO-mediated [3 + 2] annulation-aromatization protocol for the preparation of pyrazolo[1,5-a]pyridines from N-aminopyridines and α,β-unsaturated compounds was developed. The procedure offered multisubstituted pyrazolo[1,5-a]pyridines in good to excellent yield with high and predictable regioselectivity. The modification of marketed drugs including Loratadine, Abiraterone, and Metochalcone, and a one-pot three-step gram scale synthesis of key intermediate for the preparation of Selpercatinib were demonstrated. Mechanism studies show that TEMPO serves both as a Lewis acid and as an oxidant.
Compound used as RET kinase inhibitor and application thereof
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Paragraph 0227-0230; 0235-0236, (2021/07/01)
The invention relates to a compound used as an RET kinase inhibitor and application thereof, wherein the compound has a structure as shown in a formula F, has good inhibition capability on RET kinase, and has good pharmacodynamic and pharmacokinetic performance and lower toxic and side effects.
RET inhibitor, pharmaceutical composition comprising same and application of RET inhibitor and pharmaceutical composition in medicines
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Paragraph 0253-0254, (2021/11/10)
The invention belongs to the field of medicines, and relates to an RET inhibitor, a pharmaceutical composition comprising the same and application of the RET inhibitor and the pharmaceutical composition in medicines. Specifically, the invention relates to