Synthesis of Willardiine and 6-Azawillardiine Analogs: Pharmacological Characterization on Cloned Homomeric Human AMPA and Kainate Receptor Subtypes
作者:David E. Jane、Ken Hoo、Raj Kamboj、Michele Deverill、David Bleakman、Allan Mandelzys
DOI:10.1021/jm9702387
日期:1997.10.1
have also been identified. It would appear that quite large lipophilic substituents at the 5-position of the uracil ring not only are accommodated by hGluR5 receptors but also lead to enhanced affinity for these receptors. In contrast to this, for optimal binding affinity to hGluR1, -2, or -4, smaller, electron-withdrawing substituents are required. For optimal activity at hGluR4 receptors a 6-aza-substituted
据报道,Willardiine和Azawillardiine类似物(18-28)都是AMPA或海藻酸盐受体的有效和选择性激动剂。我们在这里报告了在各个表达人同源hGluR1,hGluR2,hGluR4或hGluR5受体的细胞上一定范围的Willardiine(18-23)和6-azawillardiine(24-28)类似物的新颖合成和药理学表征。取代的尿嘧啶(7-12)或6-氮唑嘧啶(13-16)的钠盐与(S)-3-[(叔丁氧羰基)氨基]氧杂环丁烷-2-酮(17)在干燥的DMF中反应,随后在TFA中脱保护,并通过离子交换色谱法纯化,主要得到了芥子碱类似物,其中烷基化发生在尿嘧啶环的N1上。我们通过检查它们对同型hGluR1,-2,-4的结合亲和力,研究了这些化合物的亚型选择性 或-5(如果是5-碘威拉第碱(22),则为hGluR6)。从这项研究中,我们证明了22与hGluR5具有高度亲和