1,3-THIAZOLES AS ADENOSINE A3 RECEPTOR ANTAGONISTS FOR THE TREATMENT OF ALLERGY, ASTHMA AND DIABETES
申请人:Takeda Chemical Industries, Ltd.
公开号:EP1027050B1
公开(公告)日:2004-01-14
US6436966B1
申请人:——
公开号:US6436966B1
公开(公告)日:2002-08-20
US6620825B1
申请人:——
公开号:US6620825B1
公开(公告)日:2003-09-16
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.