Discovery of indazole ethers as novel, potent, non-steroidal glucocorticoid receptor modulators
摘要:
A structure-based design approach led to the identification of a novel class of indazole ether based, nonsteroidal glucocorticoid receptor (GR) modulators. Several examples were identified that displayed cell potency in the picomolar range, inhibiting LPS-induced TNF-alpha release by primary peripheral blood mononuclear cells (PBMCs). Additionally, an improved steroid hormone receptor binding selectivity profile, compared to classical steroidal GR agonists, was demonstrated. The indazole ether core tolerated a broad range of substituents allowing for modulation of the physiochemical parameters. A small subset of indazole ethers, with pharmacokinetic properties suitable for oral administration, was investigated in a rat antigen-induced joint inflammation model and demonstrated excellent anti-inflammatory efficacy. (C) 2016 Elsevier Ltd. All rights reserved.
A Novel In Vivo Receptor Occupancy Methodology for the Glucocorticoid Receptor: Toward An Improved Understanding of Lung Pharmacokinetic/Pharmacodynamic Relationships
摘要:
吸入药物的药代动力学/药效学(PK/PD)关系研究具有挑战性,因为在肺部测量组织暴露和靶点参与的可能性有限。本研究的目的是开发一种测量大鼠体内糖皮质激素受体(GR)的受体占用率的方法,以便进行更翔实的吸入 PK/PD 研究。在阿斯利康的 GR 结合剂化学库中,化合物 1 [ N -(2-氨基-2-氧代-乙基)-3-[5-[(1 R,2 S )-2-(2,2-difluoropropanoylamino)-1-(2,3-dihydro-1,4-benzodioxin-6-yl)propoxy]indazol-1-yl]- N -methyl-benzamide] 被确定具有可作为 GR 体外示踪剂的特性。采用液相色谱-串联质谱生物分析法,在给大鼠服用适当剂量(30 nmol/kg)时,化合物 1 在体内肺部和脾脏中发挥了示踪剂的作用。该方法成功用于显示静脉注射丙酸氟替卡松(20、150 和 750 nmol/kg)1.5 小时后测得的剂量-受体占有率关系,并描述了静脉注射 90 nmol/kg 剂量后受体占有率的时间曲线。该方法在严格的体内测量受体占用率方面具有创新性,而且使用的是未标记的示踪剂。这一特点带来了一些关键优势,包括占用率估算不受药物颗粒溶解或死后结合/解离的影响。此外,示踪剂还可标记用于正电子发射断层扫描成像,从而使人体占用率估计成为靶标参与的可转化生物标志物。
Compounds of formula (I):
or a pharmaceutically acceptable salt thereof, compositions comprising them, processes for preparing them and their use in medical therapy (for example modulating the glucocorticoid receptor in a warm blooded animal).
Compounds of formula (I):
or a pharmaceutically acceptable salt thereof; compositions comprising them, processes for preparing them and their use in medical therapy (for example modulating the glucocorticoid receptor in a warm blooded animal).