Discovery of (2<i>S</i>,3<i>R</i>)-<i>N</i>-[2-(Pyridin-3-ylmethyl)-1-azabicyclo[2.2.2]oct-3-yl]benzo[<i>b</i>]furan-2-carboxamide (TC-5619), a Selective α7 Nicotinic Acetylcholine Receptor Agonist, for the Treatment of Cognitive Disorders
作者:Anatoly A. Mazurov、David C. Kombo、Terry A. Hauser、Lan Miao、Gary Dull、John F. Genus、Nikolai B. Fedorov、Lisa Benson、Serguei Sidach、Yunde Xiao、Philip S. Hammond、John W. James、Craig H. Miller、Daniel Yohannes
DOI:10.1021/jm301048a
日期:2012.11.26
(2S,3R)-N-[2-(Pyridin-3-ylmethyl)-1-azabicyclo[2.2.2]oct-3-yl]benzo[b]-furan-2-carboxamide (7a, TC-561), a novel selective agonist Of the alpha 7 neuronal nicotinic acetylcholine receptor, has been as a promising drug candidate for the treatment of.cognitiVe. impairment 'associated with neurological.. disorders demonstrated more than a thousand fold separation between the affinities for the alpha 7 and alpha 4 beta 2 receptor subtypes and had no detectable effects On muscle or ganglionic nicotinic receptor subtypes, indicating a marked selectivity for the central nervous system over the peripheral nervous system. Results obtained from homology Modeling and docking explain the observed selectivity. 7a had positive effects cognitive, positive, negative symptoms of schizophrenia in animal models and was additive or synergistic with the antipsychotic. Clozapine. Compound 7a, as an augmentation: therapy to the standard treatment with antipsychotics, demonstrated encouraging results on measures. : of negative symptoms and cognitive dysfunction in schizophrenia and was well tolerated.: in a phase II clinical proof Of concept trial in patients With Schizophrenia.
(2S,3R)-N-[2-(Pyridin-3-ylmethyl)-1-azabicyclo[2.2.2]oct-3-yl]benzo[b]-furan-2-carboxamide(7a,TC-561)是一种新型选择性α7神经性烟碱型乙酰胆碱受体激动剂。它作为一种有前景的药物候选物,用于治疗与神经系统疾病相关的认知功能障碍。其对α7和α4β2受体亚型的亲和力分离系数超过千倍,并对肌肉或节交感神经烟碱型受体亚型无可检测到的影响,表明其对中枢神经系统相对于外周神经系统的显著选择性。
通过同源建模和对接研究获得的结果解释了观察到的选择性。在动物模型中,7a对认知功能、精神分裂症的阳性症状和阴性症状均表现出积极效果,并与抗精神病药物Clozapine表现出叠加或协同作用。在II期临床概念验证试验中,化合物7a作为标准抗精神病药物治疗的辅助疗法,在改善精神分裂症患者的阴性症状和认知功能障碍方面表现出令人鼓舞的结果,并且耐受性良好。