PYRAZOLO[1,5-A]PYRIDINE DERIVATIVE, PREPARATION METHOD THEREFOR, AND COMPOSITION AND USE THEREOF
摘要:
The present invention relates to a pyrazolo[1,5-a]pyridine derivative, a preparation method therefor, and a composition and a use thereof. Specifically, the present invention relates to the compound of formula (I) and the use thereof for the treatment and/or prevention of wild type, gene-fusion type (including but not limited to KIF5B, CCDC6 and NCOA4) and mutant type (including but not limited to V804, G810 and M918) RET kinases-related diseases, including diseases or conditions mediated by RET kinase.
N-Arylation of 4-fluoro-5-trimethylsilyl-1H-pyrazole
摘要:
The 1,3-dipolar cycloaddition reaction of fluoro(trimethylsilyl)acetylene prepared in situ with an excess of diazomethane smoothly proceeded to give the corresponding 4-fluoro-5-trimethylsilyl-1H-pyrazole in 84% yield. The copper iodide-catalyzed N-arylation of the fluorinated pyrazole with a variety of aryl iodides afforded N-aryl-4-fluoropyrazoles as desilylation products in good to excellent yields. (C) 2007 Elsevier B.V. All rights reserved.
[EN] PYRAZOLO[1,5-A]PYRIDINE DERIVATIVE, PREPARATION METHOD THEREFOR, AND COMPOSITION AND USE THEREOF<br/>[FR] DÉRIVÉ DE PYRAZOLO[1,5-A]PYRIDINE, SON PROCÉDÉ DE PRÉPARATION ET COMPOSITION ET UTILISATION ASSOCIÉES<br/>[ZH] 一种吡唑并[1,5-a]吡啶类衍生物及其制备方法,组合物以及用途