Novel, Potent, and Selective 5-HT3 Receptor Antagonists Based on the Arylpiperazine Skeleton: Synthesis, Structure, Biological Activity, and Comparative Molecular Field Analysis Studies
作者:Maurizio Anzini、Andrea Cappelli、Salvatore Vomero、Gianluca Giorgi、Thierry Langer、Michel Hamon、Nacera Merahi、Boris M. Emerit、Alfredo Cagnotto、Malgorzata Skorupska、Tiziana Mennini、Julia C. Pinto
DOI:10.1021/jm00014a021
日期:1995.7
5-HT3 receptor antagonists with potencies in the same range as the best known 5-HT3 receptor antagonists ondansetron, tropisetron, and zacopride. The crystal and molecular structures of compounds 5f,j,n were determined by single-crystal X-ray diffraction and used as starting structures for molecular modeling studies. Comparative molecular field analysis (CoMFA) was applied to binding constants of compounds
描述了一系列稠合喹啉衍生物的合成和药理学评估,这些衍生物在哌嗪或[喹啉核]的2-位上带有[氮]的碱性氮上。5-HT受体结合研究表明,对于大多数研究的化合物,其对5-HT3受体亚型的纳摩尔亲和力。最具活性的化合物苯并吡喃并[3,4-c]喹啉衍生物5f的Ki值与报道的Quipazine非常相似,并且选择性有所提高。对三种选定化合物进行的功能和体内测试表明,5f,j,n是有效的5-HT3受体拮抗剂,其效力与最著名的5-HT3受体拮抗剂恩丹西酮,托吡司琼和扎克必利相同。化合物5f,j的晶体和分子结构 n通过单晶X射线衍射确定,并用作分子建模研究的起始结构。比较分子场分析(CoMFA)用于化合物5a-p和6a-h的结合常数。从部分最小二乘计算得出的交叉验证的r2表明,对所研究化合物系列中的亲和力值具有良好的预测能力。以实际pKi值与预测pKi值的关系图的形式提供了预测能力的证据。CoMFA衍生模型的