Ether analogues of DPA-714 with subnanomolar affinity for the translocator protein (TSPO)
作者:Samuel D. Banister、Corinne Beinat、Shane M. Wilkinson、Bin Shen、Cecilia Bartoli、Silvia Selleri、Eleonora Da Pozzo、Claudia Martini、Frederick T. Chin、Michael Kassiou
DOI:10.1016/j.ejmech.2015.02.004
日期:2015.3
Sixteen new phenyl alkyl ether derivatives (12, 14–28) of the 5,7-dimethylpyrazolo[1,5-a]pyrimidin-3-ylacetamide (DPA) class were synthesized and evaluated in a competition binding assay against [3H]PK11195 using 18 kDa translocator protein (TSPO) derived from rat kidney mitochondrial fractions. All analogues showed superior binding affinities for TSPO compared to DPA-713 (5) and DPA-714 (6). Picomolar
十六新苯基烷基醚衍生物(12,14 - 28)的5,7-二甲基吡的[1,5一]嘧啶-3-基乙酰胺(DPA)类的合成和在竞争结合测定法来评估抗[ 3 H] PK11195使用源自大鼠肾脏线粒体级分的18 kDa转运蛋白(TSPO)。与DPA-713(5)和DPA-714(6)相比,所有类似物均表现出对TSPO的优异结合亲和力。首次在该分析中观察到此类TSPO配体的皮摩尔亲和力,其中苯乙醚28表现出最大亲和力(K i = 0.13 nM)。此外,在大鼠C6胶质瘤细胞类固醇生成试验中,所有类似物均可增强孕烯醇酮的生物合成(比基线高134–331%)。