Synthesis and Structure−Activity Relationships of a New Model of Arylpiperazines. 4. 1-[ω-(4-Arylpiperazin-1-yl)alkyl]-3-(diphenylmethylene)- 2,5-pyrrolidinediones and -3-(9<i>H</i>-fluoren-9-ylidene)-2,5-pyrrolidinediones: Study of the Steric Requirements of the Terminal Amide Fragment on 5-HT<sub>1A</sub> Affinity/Selectivity
作者:María L. López-Rodríguez、M. José Morcillo、Tandú K. Rovat、Esther Fernández、Bruno Vicente、Antonio M. Sanz、Medardo Hernández、Luis Orensanz
DOI:10.1021/jm980285e
日期:1999.1.1
demonstrated moderate to high affinity for 5-HT1A and alpha1 receptor binding sites but had no affinity for D2 receptors. The study of the length of the alkyl chain and the imide substructure has allowed us to suggest some differences between the 5-HT1A and the alpha1-adrenergic receptors: (i) for III and IV, affinity for the 5-HT1A receptor as a function of the length of the methylene linker decreases
在本文中,我们报告了一系列新的1- [ω-(4-芳基哌嗪-1-基)烷基] -3-(二苯基亚甲基)- 2、2-吡咯烷二酮(III)(1-4)和-3-(9H-芴-9-亚烷基)-2、5-吡咯烷二酮(IV)(1-4),其中烷基连接基包含1-4亚甲基和芳基被不同地取代。将获得的结果与先前报道的双环乙内酰脲(I)和相关双环胺(II)系列的结果进行比较。被测化合物1-4的相当一部分对5-HT1A和α1受体结合位点表现出中等至高亲和力,但对D2受体没有亲和力。对烷基链长度和酰亚胺亚结构的研究使我们提出了5-HT1A和α1-肾上腺素受体之间的一些区别:(i)对于III和IV,对5-HT1A受体的亲和力随亚甲基接头长度的变化而降低,顺序为4> 1 >> 3约2,而对α1受体的亲和力则按3顺序降低。 4> 1约2; (ii)5-HT1A受体中的无药效位阻性口袋(不保留配体的药效团但保留分子的非必需片段的受体区)