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新型构象限制的 -芳基哌嗪衍生物的设计、合成及药理学评价,作为 D/D 受体配体,用于治疗神经退行性疾病的候选药物。

Design, Synthesis and Pharmacological Evaluation of Novel Conformationally Restricted -arylpiperazine Derivatives Characterized as D/D Receptor Ligands, Candidates for the Treatment of Neurodegenerative Diseases.

机构信息

Laboratório de Avaliação e Síntese de Substâncias Bioativas (LASSBio), Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, RJ, Brazil.

Programa de Pós-Graduação em Farmacologia e Química Medicinal, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, RJ, Brazil.

出版信息

Biomolecules. 2022 Aug 12;12(8):1112. doi: 10.3390/biom12081112.

Abstract

Most neurodegenerative diseases are multifactorial, and the discovery of several molecular mechanisms related to their pathogenesis is constantly advancing. Dopamine and dopaminergic receptor subtypes are involved in the pathophysiology of several neurological disorders, such as schizophrenia, depression and drug addiction. For this reason, the dopaminergic system and dopamine receptor ligands play a key role in the treatment of such disorders. In this context, a novel series of conformationally restricted -arylpiperazine derivatives (-) with a good affinity for D/D dopamine receptors is reported herein. Compounds were designed as interphenylene analogs of the drugs aripiprazole (2) and cariprazine (3), presenting a 1,3-benzodioxolyl subunit as a ligand of the secondary binding site of these receptors. The six new -arylpiperazine compounds were synthesized in good yields by using classical methodologies, and binding and guanosine triphosphate (GTP)-shift studies were performed. Affinity values below 1 μM for both target receptors and distinct profiles of intrinsic efficacy were found. Docking studies revealed that Compounds - present a different binding mode with dopamine D and D receptors, mainly as a consequence of the conformational restriction imposed on the flexible spacer groups of 2 and 3.

摘要

大多数神经退行性疾病都是多因素的,与发病机制相关的几种分子机制的发现不断取得进展。多巴胺和多巴胺受体亚型参与了几种神经紊乱的病理生理学,如精神分裂症、抑郁症和药物成瘾。因此,多巴胺能系统和多巴胺受体配体在这些疾病的治疗中起着关键作用。在这种情况下,本文报道了一系列新型的构象受限的 -芳基哌嗪衍生物(-),它们对 D/D 多巴胺受体具有良好的亲和力。化合物被设计为阿立哌唑(2)和卡利培嗪(3)药物的间苯二酚类似物,呈现 1,3-苯并二恶唑亚基作为这些受体的次级结合位点的配体。使用经典方法以良好的收率合成了这 6 种新的 -芳基哌嗪化合物,并进行了结合和鸟苷三磷酸(GTP)移位研究。发现这两种靶受体的亲和力值均低于 1 μM,并且具有不同的内在效力谱。对接研究表明,化合物 - 与多巴胺 D 和 D 受体具有不同的结合模式,主要是由于 2 和 3 的柔性间隔基受到构象限制。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/519e/9405847/74a3ee6c00cf/biomolecules-12-01112-g001.jpg

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