Synthesis and Biological Activities of 4-Phenyl-5-pyridyl-1,3-thiazole Derivatives as p38 MAP Kinase Inhibitors
作者:Seiji Miwatashi、Yasuyoshi Arikawa、Ken-ichi Naruo、Keiko Igaki、Yasumasa Watanabe、Hiroyuki Kimura、Tomohiro Kawamoto、Shigenori Ohkawa
DOI:10.1248/cpb.53.410
日期:——
A novel series of 4-phenyl-5-pyridyl-1,3-thiazole analogues possessing potent in vitro inhibitory activity against p38 mitogen-activated protein kinase and the release of tumor necrosis factor-α (TNF-α) from human monocytic THP-1 cells stimulated by lipopolysaccharide has been identified. Subsequent structure–activity relationship (SAR) studies and optimization for absorption, distribution, metabolism, and elimination (ADME) profiles led to the identification of compounds 7g and 10b as orally active lead candidates that block the in vivo production of proinflammatory cytokine (TNF-α). In pharmacokinetic studies, compound 10b showed good oral administration in mice and demonstrated significant in vivo anti-inflammatory activity in an anti-collagen monoclonal antibody-induced arthritis mouse model (minimum effective dose (MED)=30 mg/kg). Further elucidation of this class of compounds may provide novel anti-inflammatory agents, such as anti-rheumatoid arthritis drugs.
发现了一系列新型的4-苯基-5-吡啶基-1,3-噻唑类似物,这些化合物具有强大的体外抑制p38丝裂原活化蛋白激酶活性以及抑制人类单核细胞THP-1受脂多糖刺激释放肿瘤坏死因子-α(TNF-α)的能力。随后的结构-活性关系(SAR)研究和针对吸收、分布、代谢和排泄(ADME)特性的优化,确定了化合物7g和10b作为具有口服活性的先导候选药物,这些药物能够阻断体内促炎细胞因子(TNF-α)的产生。在药代动力学研究中,化合物10b在小鼠中表现出良好的口服给药效果,并在抗胶原蛋白单克隆抗体诱导的关节炎小鼠模型中显示出显著的体内抗炎活性(最低有效剂量(MED)=30 mg/kg)。进一步阐明这类化合物可能为新型抗炎药物,如抗风湿性关节炎药物,提供新的选择。