Synthesis of novel 5-substituted-2-aminotetralin analogs: 5-HT1A and 5-HT7 G protein-coupled receptor affinity, 3D-QSAR and molecular modeling.,Bioorganic & Medicinal Chemistry

当前位置： X-MOL 学术 › Bioorg. Med. Chem. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Synthesis of novel 5-substituted-2-aminotetralin analogs: 5-HT1A and 5-HT7 G protein-coupled receptor affinity, 3D-QSAR and molecular modeling.
Bioorganic & Medicinal Chemistry ( IF 3.3 ) Pub Date : 2019-12-12 , DOI: 10.1016/j.bmc.2019.115262
Charles K Perry ₁ , Austen B Casey ₁ , Daniel E Felsing ₁ , Rajender Vemula ₁ , Mehreen Zaka ₁ , Noah B Herrington ₂ , Meng Cui ₁ , Glen E Kellogg ₂ , Clinton E Canal ₁ , Raymond G Booth ₁

Affiliation

The serotonin 5-HT7 G protein-coupled receptor (GPCR) is a proposed pharmacotherapeutic target for a variety of central and peripheral indications, albeit, there are no approved drugs selective for binding 5-HT7. We previously reported that a lead analog based on the 5-substituted-N,N-disubstituted-1,2,3,4-tetrahydronaphthalen-2-amine (5-substituted-2-aminotetralin, 5-SAT) scaffold binds with high affinity at the 5-HT7 GPCR, and can treat symptoms of autism in mouse models; subsequently, the lead was found to have high affinity at the 5-HT1A GPCR. Herein, we report the synthesis of novel 5-SAT analogs to develop a 3-dimensional quantitative structure-affinity relationship (3D-QSAR) at the human 5-HT7 receptor for comparison with similar studies at the highly homologous 5-HT1A receptor. We report 35 new 5-SAT ligands, some with very high affinity (Ki ≤ 1 nM) and stereoselectivity at 5-HT7 + or 5-HT1A receptors, several with modest selectivity (up to 12-fold) for binding at 5-HT7, and, several ligands with high selectivity (up to 40-fold) at the 5-HT1A receptor. 3D-QSAR results indicate that steric extensions at the C(5)-position improve selectivity for the 5-HT7 over 5-HT1A receptor, while steric and hydrophobic extensions at the chiral C(2)-amino position impart 5-HT1A selectivity. In silico receptor homology modeling studies, supplemented with molecular dynamics simulations and binding free energy calculations, were used to rationalize experimentally-determined receptor selectivity and stereoselective affinity results. The data from these studies indicate that the 5-SAT chemotype, previously shown to be safe and efficacious in rodent paradigms of neurodevelopmental and neuropsychiatric disorders, is amenable to structural modification to optimize affinity at serotonin 5-HT7 vs. 5-HT1A GPCRs, as may be required for successful clinical translation.

中文翻译：

新型5-取代-2-氨基四氢萘类似物的合成：5-HT1A和5-HT7 G蛋白偶联的受体亲和力，3D-QSAR和分子建模。

血清素5-HT7 G蛋白偶联受体（GPCR）是针对各种中枢和外周适应症的拟议药物治疗靶标，尽管尚无批准的选择性结合5-HT7的药物。我们先前曾报道，基于5-取代-N，N-二取代-1,2,3,4-四氢萘-2-胺（5-取代-2-氨基四氢萘，5-SAT）支架的前导类似物与在5-HT7 GPCR上具有亲和力，并且可以治疗小鼠模型中的自闭症症状；随后，发现该铅对5-HT1A GPCR具有高亲和力。在这里，我们报告了新型5-SAT类似物的合成，以在人5-HT7受体上建立三维定量结构亲和关系（3D-QSAR），用于与在高度同源的5-HT1A受体上进行的类似研究进行比较。我们报告了35种新的5-SAT配体，一些对5-HT7 +或5-HT1A受体具有极高的亲和力（Ki≤1 nM）和立体选择性，另一些对与5-HT7结合具有适度的选择性（最高12倍），而一些对配体的选择性高（在5-HT1A受体上最多可扩增40倍）。3D-QSAR结果表明，在C（5）位置的空间延伸提高了对5-HT7的选择性，超过了5-HT1A受体，而在手性C（2）-氨基位置的空间和疏水延伸赋予了5-HT1A选择性。在硅受体同源性建模研究中，辅以分子动力学模拟和结合自由能计算，用于合理化实验确定的受体选择性和立体选择性亲和力结果。这些研究的数据表明，5-SAT化学型

更新日期：2019-12-13

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11