Improved Regioselectivity in Pyrazole Formation through the Use of Fluorinated Alcohols as Solvents: Synthesis and Biological Activity of Fluorinated Tebufenpyrad Analogs
作者:Santos Fustero、Raquel Román、Juan F. Sanz-Cervera、Antonio Simón-Fuentes、Ana C. Cuñat、Salvador Villanova、Marcelo Murguía
DOI:10.1021/jo800251g
日期:2008.5.1
The preparation of N-methylpyrazoles is usually accomplished through reaction of a suitable 1,3-diketone with methylhydrazine in ethanol as the solvent. This strategy, however, leads to the formation of regioisomeric mixtures of N-methylpyrazoles, which sometimes are difficult to separate. We have determined that the use of fluorinated alcohols such as 2,2,2-trifluoroethanol (TFE) and 1,1,1,3,3,3-hexafluoro-2-propanol (HFIP) as solvents dramatically increases the regioselectivity in the pyrazole formation, and we have used this modification in a straightforward synthesis of fluorinated analogs of Tebufenpyrad with acaricide activity.
NOVEL NAPHTHRYIDINES AND ISOQUINOLINES AND THEIR USE AS CDK8/19 INHIBITORS
申请人:Merck Patent GmbH
公开号:EP3169678A1
公开(公告)日:2017-05-24
[EN] NOVEL NAPHTHRYIDINES AND ISOQUINOLINES AND THEIR USE AS CDK8/19 INHIBITORS<br/>[FR] NOUVELLES NAPHTYRIDINES ET ISOQUINOLÉINES ET LEUR UTILISATION À TITRE D'INHIBITEURS DE CDK8/19
申请人:MERCK PATENT GMBH
公开号:WO2016009076A1
公开(公告)日:2016-01-21
The present invention relates to naphthyridine and isoquinoline compounds, and pharmaceutically acceptable compositions thereof, useful as inhibitors of CDK8/19, and for the treatment of CDK8/19-related disorders.