Novel Potent and Selective Central 5-HT<sub>3</sub> Receptor Ligands Provided with Different Intrinsic Efficacy. 2. Molecular Basis of the Intrinsic Efficacy of Arylpiperazine Derivatives at the Central 5-HT<sub>3</sub> Receptors
作者:Andrea Cappelli、Maurizio Anzini、Salvatore Vomero、Laura Canullo、Laura Mennuni、Francesco Makovec、Edith Doucet、Michel Hamon、M. Cristina Menziani、Pier G. De Benedetti、Giancarlo Bruni、Maria R. Romeo、Gianluca Giorgi、Alessandro Donati
DOI:10.1021/jm981112s
日期:1999.5.1
[14C]guanidinium uptake in NG 108-15 cells. Their intrinsic efficacy ranged from the 5-HT3 full agonist properties of compounds 7a and 8h, i to those of partial agonists 10a,d and antagonists 8b,d,e, and 9c, d,h,i. The comparison between these functional data and those relative to the previously described compounds suggested that in this class of 5-HT3 ligands the intrinsic efficacy is modulated in a rather
设计并合成了新型5-HT3受体配体,旨在更深入地了解芳基哌嗪与中枢5-HT3受体相互作用的内在功效的分子基础。测试了新合成的化合物和属于同一类杂芳基哌嗪的某些先前发表的化合物的潜在取代大鼠皮膜的[3H]格拉司琼的能力。这些5-HT3受体结合研究显示了几种被研究化合物的亚纳摩尔亲和力。活性最高的配体是喹啉衍生物,其在喹啉核的4-位带有苯基,在3-位带有各种含氧烷基侧链。进行了定性和理论上的定量结构亲和关系研究,并更新了本工作第1部分中提出的与喹嗪及其受体有关的5-HT3配体的相互作用模型,以纳入最新数据。体外评估了在NG 108-15细胞中依赖5-HT3受体的[14C]胍鎓吸收情况,对12种选定化合物的潜在5-HT3激动剂/拮抗剂活性进行了评估。它们的固有功效范围从化合物7a和8h的5-HT3完全激动剂性能到部分激动剂10a,d和拮抗剂8b,d,e和9c,d,h,i的性能。这些功能数据与相对