Obesity is a major risk factor for the development of conditions such as hypertension, hyperglycemia, dyslipidemia, coronary artery disease and cancer. Several pieces of evidence, including data in primates, have demonstrated the beneficial effects of histamine-3 receptor (H3R)
inverse agonists in the regulation of food intake and body weight. A pharmacophore model based on selected published H3R ligands and validated by previous investigations, was used to identify the 5-oxy-2-carboxamide-indole core as a novel series of H3R inverse agonists.
Extensive structure–activity relationship (SAR) investigations were rewarded by the identification of several compounds reversing (R)-?-methyl-histamine-induced water intake increase and reducing food intake/body weight in rodent models of obesity. Among those compounds,
(4,4-difluoro-piperidin-1-yl)-[1-isopropyl-5-(1-isopropyl-piperidin-4-yloxy)-1H-indol-2-yl]-methanone, selected as a lead compound, was exhibiting a promising profile, including excellent pharmacokinetic properties, good in vitro safety profile and high efficacy in a chronic
rodent model of obesity.
肥胖是高血压、高血糖、血脂异常、冠心病和癌症等疾病发展的主要危险因素。包括灵长类动物数据在内的多项证据表明组胺-3受体(H3R)拮抗剂在调节食物摄入和体重方面具有益处。基于选定的已发表H3R配体构建的药效团模型,并经过先前研究验证,用于识别5-氧-2-羧酰胺吲哚核心作为一系列新型H3R拮抗剂。通过广泛的构效关系(SAR)研究,鉴定出几种化合物能够逆转(R)-β-甲基组胺诱导的小鼠摄水量增加,并减少肥胖小鼠模型中的食物摄入/体重。在这些化合物中,(4,4-二氟-哌啶-1-基)-[1-异丙基-5-(1-异丙基-哌啶-4-氧基)-1H-吲哚-2-基]-甲酮,作为首选化合物,表现出有希望的特性,包括优异的药代动力学特性、良好的体外安全性特性以及在慢性肥胖小鼠模型中的高效性。