Synthesis, Biological Activity, and SARs of Pyrrolobenzoxazepine Derivatives, a New Class of Specific “Peripheral-Type” Benzodiazepine Receptor Ligands
作者:Giuseppe Campiani、Vito Nacci、Isabella Fiorini、Maria P. De Filippis、Antonio Garofalo、Silvia M. Ciani、Giovanni Greco、Ettore Novellino、D. Clive Williams、Daniela M. Zisterer、Margaret J. Woods、Camelia Mihai、Cristina Manzoni、Tiziana Mennini
DOI:10.1021/jm960251b
日期:1996.1.1
affinity, while other C-7 modified analogues provided information specifically on the hydrogen bonding with a putative receptor site H1. The new pyrrolobenzoxazepines were tested in rat cortex, a tissue expressing high density of mitochondrial PBR, and exhibited IC50 and Ki values in the low nanomolar or subnanomolar range, as measured by the displacement of [3H]PK 11195 binding. A subset of the highest
据报道,“外周型”苯二氮杂receptor受体(PBR)在许多生物学过程中起作用。为了提供新的受体配体,我们已经合成并测试了基于吡咯并苯并氮杂pine骨架的一系列PBR配体。这些新化合物中的几种被证明对PBR具有高亲和力和选择性配体,而苯并氮杂pine 17f和17j被认为是迄今为止对该受体最有效的配体。本文详述的SAR和分子模型研究描述了改善亲和力所需的许多结构特征。某些配体被用作“分子尺度”,以探究PBR裂隙中亲脂性口袋L1和L3的空间尺寸,并确定L1和L3的占领对亲和力的影响,而其他C-7修饰的类似物提供了有关与推定的受体位点H1进行氢键结合的专门信息。新的吡咯并苯并a庚因在大鼠皮层中进行了测试,该组织表达高密度的线粒体PBR,并通过[3H] PK 11195结合的位移测量,在低纳摩尔或亚纳摩尔范围内表现出IC50和Ki值。还发现最高亲和力配体的子集对大鼠肾上腺线粒体中的[3H] PK