Practical and Scalable Process for the Preparation of 4-Amino-1,3-dimethylpyrazole Hydrochloride
摘要:
A practical and Scalable process for the preparation of 4-amino-1,3-dimethylpyrazole hydrochloride I is described. Compound I is a useful starting material; its preparation is achieved ilia a three-step sequence from methyl hydrazine and technical grade acetaldehyde dimethylacetal. The target molecule is isolated in high chemical and isomeric purity (>99.0% with respect to 4-amino-1,5-dimethylpyrazole.
[EN] THIOPHENE DERIVATIVES FOR THE TREATMENT OF DISORDERS CAUSED BY IGE<br/>[FR] DÉRIVÉS DE THIOPHÈNE POUR LE TRAITEMENT DE TROUBLES PROVOQUÉS PAR IGE
申请人:UCB BIOPHARMA SRL
公开号:WO2019243550A1
公开(公告)日:2019-12-26
Thiophene derivatives of formula (I) and a pharmaceutically acceptable salt thereof are provided. These compounds have utility for the treatment or prevention of disorders caused by IgE, such as allergy, type 1 hypersensitivity or familiar sinus inflammation.
Highly Regioselective Palladium-Catalyzed C2-Amination of 2,4-Dichloropyridines: Scope and Limitations
作者:Rémy Morgentin、Christian Delvare、Patrice Koza
DOI:10.1055/s-0030-1260080
日期:2011.8
The use of palladium(0) enables a highly regioselective C-2 amination of 4,6-dichloronicotinonitrile. Coupling with aminoarenes that are N-acetyl-masked to limit cross-coupling overreaction, leads to 4-chloro-6-anilino nicotinonitrile compounds after deprotection in situ. The scope of these original conditions was evaluated.
The present invention relates to compounds that inhibit of focal adhesion kinase function, processes for their preparation, pharmaceutical compositions containing them as the active ingredient, to their use as medicaments and to their use in the manufacture of medicaments for use in the treatment in warm-blooded animals such as humans of diseases such as cancer.
Two-Directional Approach for the Rapid Synthesis of 2,4-Bis-Aminoaryl Pyridine Derivatives
作者:Rémy Morgentin、Bernard Barlaam、Kevin Foote、Lorraine Hassall、Janet Hawkins、Clifford D. Jones、Antoine Le Griffon、Aurelien Peru、Patrick Plé
DOI:10.1080/00397911.2010.520403
日期:2012.1.1
pyridine compounds from a common starting material. The C-4/C-2 approach uses palladium-mediated coupling reactions to sequentially functionalizeC-4 and then C-2. An alternative C-2/C-4 route uses a regioselective SNAr reaction to first substitute at C-2 then subsequently at C-4 by a palladium-mediated reaction. Both approaches have been used successfully to provide a range of 2,4-bis-aminoaryl pyridine
The present invention relates to novel compounds that inhibit LRRK2 kinase activity, processes for their preparation, to compositions containing them and to their use in the treatment of or prevention of diseases characterized by LRRK2 kinase activity, for example Parkinson's disease, Alzheimer's disease and amyotrophic lateral sclerosis (ALS).