Molecular Hybridization of Potent and Selective γ-Hydroxybutyric Acid (GHB) Ligands: Design, Synthesis, Binding Studies, and Molecular Modeling of Novel 3-Hydroxycyclopent-1-enecarboxylic Acid (HOCPCA) and <i>trans</i>-γ-Hydroxycrotonic Acid (T-HCA) Analogs
作者:Jacob Krall、Claus Hatt Jensen、Francesco Bavo、Christina Birkedahl Falk-Petersen、Anne Stæhr Haugaard、Stine Byskov Vogensen、Yongsong Tian、Mia Nittegaard-Nielsen、Sara Björk Sigurdardóttir、Jan Kehler、Kenneth Thermann Kongstad、David E. Gloriam、Rasmus Prætorius Clausen、Kasper Harpsøe、Petrine Wellendorph、Bente Frølund
DOI:10.1021/acs.jmedchem.7b01351
日期:2017.11.9
(HOCPCA) and the linear GHB analog trans-4-hydroxycrotonic acid (T-HCA). In general, all structural modifications performed on HOCPCA led to reduced affinity. In contrast, introduction of diaromatic substituents into the 4-position of T-HCA led to high-affinity analogs (medium nanomolar Ki) for the GHB high-affinity binding sites as the most high-affinity analogs reported to date. The SAR data formed the
γ-羟基丁酸(GHB)是一种具有特定高亲和力结合位点的神经活性物质。为促进目标识别和配体优化,我们在此报告了针对这些结合位点的新型配体的全面结构亲和力关系研究。基于构象受限的3-羟基环戊-1-烯羧酸(HOCPCA)和线性GHB类似物反-4-羟基巴豆酸(T-HCA),使用了分子杂交策略。通常,对HOCPCA进行的所有结构修饰均导致亲和力降低。相反,将二芳族取代基引入T-HCA的4位可产生高亲和力类似物(中等纳摩尔浓度的K i),作为GHB高亲和力结合位点,是迄今为止报道的最高亲和力类似物。SAR数据构成了GHB配体的三维药效团模型的基础,该模型确定了对高亲和力结合具有重要预测意义的重要分子特征。这些发现在靶标表征和高亲和力GHB结合位点的配体鉴定的进一步过程中将是有价值的。