[EN] AMINOPYRAZINE COMPOUNDS AS HPK1 INHIBITOR AND THE USE THEREOF<br/>[FR] COMPOSÉS D'AMINOPYRAZINE UTILISÉS EN TANT QU'INHIBITEURS DE HPK1 ET LEUR UTILISATION
申请人:BEIGENE LTD
公开号:WO2021032148A1
公开(公告)日:2021-02-25
Disclosed herein is an aminopyrazine compound of Formula (I), or a stereoisomer thereof, or a pharmaceutically acceptable salt thereof, and pharmaceutical compositions comprising thereof. Also disclosed is a method of treating HPK1 related disorders or diseases by using the compound disclosed herein.
Tuning the structure and solubility of nanojars by peripheral ligand substitution, leading to unprecedented liquid–liquid extraction of the carbonate ion from water into aliphatic solvents
作者:Basil M. Ahmed、Brice Calco、Gellert Mezei
DOI:10.1039/c6dt00847j
日期:——
pyrazole ligand interfere with nanojar formation, and whether appropriate substituents could be employed to tune the solubility of nanojars in solvents of interest, such as long-chain aliphatic hydrocarbons (solvent of choice for large-scale liquid–liquid extraction processes) and water. To this end, we conducted a comprehensive study using 40 different pyrazole ligands, with one, two or three substituents
Thermodynamic Understanding of an Aza-Michael Reaction Enables Five-Step Synthesis of the Potent Integrin Inhibitor MK-0429
作者:Anya Gupta、Matthew L. Condakes
DOI:10.1021/acs.joc.1c02375
日期:2021.12.3
strategy for the aza-Michael addition of nucleophilic heterocycles into β-substituted acrylates using potassium tert-butoxide as catalyst. Demonstrating that the reaction is under thermodynamic control underpins optimization efforts and enables rapid exploration of the substrate scope, with yields ranging from 55% to 94%. We further leverage these lessons in a significantly shortened synthesis of MK-0429
Diazomethane adds to ethoxyacetylene to give a 96 : 4 mixture in favor of 4-ethoxypyrazole (3) which had been identified as the only product in a previous study. This result contrasts the behavior of ethylvinylether which gives 3-ethoxy-1-pyrazoline (2). Transition structures for the four possible regioisomers are determined by MNDO-PM3 calculations. The regioselectivity is explained on the basis