1-Substituted pyrazolo[1,5-c]quinazolines as novel Gly/NMDA receptor antagonists: Synthesis, biological evaluation, and molecular modeling study
作者:Flavia Varano、Daniela Catarzi、Vittoria Colotta、Francesca Romana Calabri、Ombretta Lenzi、Guido Filacchioni、Alessandro Galli、Chiara Costagli、Francesca Deflorian、Stefano Moro
DOI:10.1016/j.bmc.2005.07.010
日期:2005.10
also tested for their functional antagonistic activity at both the AMPA and NMDA receptor-ion channels. The results obtained in this study have highlighted that a C-1 lipophilic substituent on the pyrazolo[1,5-c]quinazoline-2-carboxylate core shifts selectivity toward the Gly/NMDA receptor, while a C-1 anionic carboxylate residue is able to increase affinity toward this receptor subtype. In particular
一组新的5,6-二氢-吡唑并[1,5-c]喹唑啉-2-羧酸酯(2-18),在位置-上带有不同的取代基(COOEt,Cl,Br,CH(3)和COOH)为了研究在该特定位置上的各个基团对Gly / NMDA受体亲和力和/或选择性的影响,合成了图1的化合物。评价所有本文报道的化合物在Gly / NMDA,AMPA和KA受体上的结合。还测试了一些选定的化合物在AMPA和NMDA受体离子通道上的功能拮抗活性。在这项研究中获得的结果表明,吡唑并[1,5-c]喹唑啉-2-羧酸酯核上的C-1亲脂取代基使选择性向Gly / NMDA受体转移,而C-1阴离子羧酸酯残基能够以增加对该受体亚型的亲和力。特别是,在位置1处带有氯原子的2-羧酸15和16不仅有效(分别为K(i)= 0.18和0.16μM),而且相对于AMPA选择性具有很高的Gly / NMDA选择性(选择性比> 500) )。此外,在吡唑并喹唑啉系列