A class of pyrazole derivatives is described for use in treating p38 kinase mediated disorders. Compounds of particular interest are defined by Formula (IA),
wherein R1, R2, R3 and R4 are as described in the specification.
Synthesis, Crystal Structure, and Activity of Pyrazole-Based Inhibitors of p38 Kinase
作者:Matthew J. Graneto、Ravi G. Kurumbail、Michael L. Vazquez、Huey-Sheng Shieh、Jennifer L. Pawlitz、Jennifer M. Williams、William C. Stallings、Lifeng Geng、Ashok S. Naraian、Francis J. Koszyk、Michael A. Stealey、Xiangdong D. Xu、Richard M. Weier、Gunnar J. Hanson、Robert J. Mourey、Robert P. Compton、Stephen J. Mnich、Gary D. Anderson、Joseph B. Monahan、Rajesh Devraj
DOI:10.1021/jm0611915
日期:2007.11.1
A series of pyrazole inhibitors of p38 mitogen-activated protein (MAP) kinase were designed using a binding model based on the crystal structure of 1 (SC-102) bound to p38 enzyme. New chemistry using dithietanes was developed to assemble nitrogen-linked substituents at the 5-position of pyrazoles. Calculated log D was used in tandem with structure-based design to guide medicinal chemistry strategy and improve the in vivo activity of a series of molecules. The crystal structure of an optimized inhibitor, 4 (SC-806), in complex with p38 enzyme was obtained to confirm the hypothesis that the addition of a basic nitrogen to the molecule induces an interaction with Asp112 of p38 alpha. A compound identified from this series was efficacious in an animal model of rheumatic disease.