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.
The present invention relates to an agent for the prophylaxis or treatment of pain, an agent for suppressing activation of osteoclast, and an inhibitor of osteoclast formation, which contains a p38 MAP kinase inhibitor and/or a TNF-α production inhibitor.
The present invention relates to a pharmaceutical agent containing one or more kinds of a p38 MAP kinase inhibitor and/or a TNF-α production inhibitor and one or more kinds of drugs selected from the group consisting of (1) a non-steroidal antiinflammatory drug, (2) a disease-modifying anti-rheumatic drug, (3) an anti-cytokine drug, (4) an immunomodulator, (5) a steroid and (6) a c-Jun N-terminal kinase inhibitor in combination. This combination agent is useful as a prophylactic or therapeutic agent of the diseases such as rheumatism, arthritis and the like, and other diseases.
Synthesis and Biological Activities of 4-Phenyl-5-pyridyl-1,3-thiazole Derivatives as Selective Adenosine A3 Antagonists
作者:Seiji Miwatashi、Yasuyoshi Arikawa、Tatsumi Matsumoto、Keiko Uga、Naoyuki Kanzaki、Yumi N. Imai、Shigenori Ohkawa
DOI:10.1248/cpb.56.1126
日期:——
To investigate the potency of an adenosine A3 receptor (A3AR) antagonist as an anti-asthmatic drug, a novel series of 4-phenyl-5-pyridyl-1,3-thiazole derivatives was synthesized and evaluated in human adenosine A1, A2A and A3 receptor and rat adenosine A3 receptor binding assays. From investigation of the SAR study, compound 7af was identified as a highly potent human and rat A3AR antagonist. This compound inhibited IB-MECA-induced plasma protein extravasation in the skin of rats and showed good oral absorption. Also, compound 7af significantly inhibited antigen-induced hyper-responsiveness to acetylcholine in actively sensitized Brown Norway rats. These results show that 4-phenyl-5-pyridyl-1,3-thiazole derivatives are potential candidates to enable the evaluation of A3AR antagonists. Further evaluation of this class of compounds may afford a novel anti-inflammatory agent such as an anti-asthmatic drug.
Compounds of the formula
or a pharmaceutically acceptable salt thereof or a tautomer thereof, wherein A and B are as described herein, are useful for treating conditions afflicting mammals.