Importance of 5/6-aryl substitution on the pharmacological profile of 4ʹ-((2-propyl-1H-benzo[d]imidazol-1-yl)methyl)-[1,1ʹ-biphenyl]-2-carboxylic acid derived PPARγ agonists
作者:Victoria Obermoser、Robert Mauersberger、Daniela Schuster、Monika Czifersky、Marina Lipova、Monika Siegl、Ulrich Kintscher、Ronald Gust
DOI:10.1016/j.ejmech.2016.11.051
日期:2017.1
substituents at position 5 or 6 on the pharmacological profile of the partial PPARγ agonist 4‘-((2-propyl-1H-benzo[d]imidazol-1-yl)methyl)-[1,1‘-biphenyl]-2-carboxylic acid was investigated. This lead was previously identified as the essential part of telmisartan to induce PPARγ activation. Para-OCH3-phenyl substitution strongly increased potency and efficacy independent of the position. Both compounds
在此结构-活性关系研究中,位置5或6的芳基取代基对部分PPARγ激动剂4'-(((2-丙基-1 H-苯并[ d ]咪唑-1-基]]甲基)的药理作用的影响研究了)-[1,1'-联苯] -2-羧酸。先前已将该铅鉴定为替米沙坦诱导PPARγ激活的必要部分。第-OCH 3段-苯基取代大大增强了效价和功效,而与位置无关。由于与配体结合结构域中的氨基酸Phe363有强疏水性接触,因此这两种化合物均代表完全的激动剂。获得了比替米沙坦或铅具有更高效能的部分激动剂,在苯环上带有OH或Cl取代基。分子模型表明,位于螺旋7处的Phe360具有额外的氢或卤素键。假定这些相互作用固定了螺旋7,从而促进了受体的部分激动剂构象。理论上的考虑与使用hPPARγ-LBD进行的萤光素酶反式激活分析以及时间分辨荧光共振能量转移(TR-FRET)分析的结果非常相关,在该方法中,共激活剂(TRAP220,