Discovery of novel Tetrahydrobenzo[ b ]thiophene and pyrrole based scaffolds as potent and selective CB2 receptor ligands: The structural elements controlling binding affinity, selectivity and functionality
作者:Noha A. Osman、Alessia Ligresti、Christian D. Klein、Marco Allarà、Alessandro Rabbito、Vincenzo Di Marzo、Khaled A. Abouzid、Ashraf H. Abadi
DOI:10.1016/j.ejmech.2016.07.012
日期:2016.10
binding affinity and CB2/CB1 subtype selectivity. Compound 19a and 19b from the pyrrole series exhibited the highest CB2 receptor affinity (Ki = 7.59 and 6.15 nM, respectively), as well as the highest CB2/CB1 subtype selectivity (∼70 and ∼200-fold, respectively). In addition, compound 6b from the tetrahydrobenzo[b]thiophene series presented the most potent and selective CB2 ligand in this series (Ki = 2
基于CB2的疗法在治疗各种疾病(例如炎症,多发性硬化症,疼痛,免疫相关疾病,骨质疏松症和癌症)方面显示出强大的潜力,而不会引起CB1配体的典型神经行为副作用。因此,目前的研究活动是针对CB2选择性配体的开发。在本文中,报道了新颖的基于杂环的CB 2选择性化合物的合成。一组2,5-二烷基-1-苯基-1H-吡咯-3-羧酰胺,5-取代的-2-(酰基氨基)/(2-磺酰基氨基)-噻吩-3-羧酸盐和2-(酰基氨基)/(合成了2-磺酰基氨基)-四氢苯并[ b ]噻吩-3-羧酸盐。生物学结果表明化合物具有很高的CB2结合亲和力和CB2 / CB1亚型选择性。化合物19a吡咯系列中的 α和19b表现出最高的CB2受体亲和力(分别为K i = 7.59和6.15 nM)以及最高的CB2 / CB1亚型选择性(分别为〜70和〜200倍)。此外,来自四氢苯并[ b ]噻吩系列的化合物6b在该系列中表现出最有效和最具选择性的CB2配体(K