β-Sulfonamido Functionalized Aspartate Analogues as Excitatory Amino Acid Transporter Inhibitors: Distinct Subtype Selectivity Profiles Arising from Subtle Structural Differences
作者:Jacob C. Hansen、Walden E. Bjørn-Yoshimoto、Niels Bisballe、Birgitte Nielsen、Anders A. Jensen、Lennart Bunch
DOI:10.1021/acs.jmedchem.6b01066
日期:2016.10.13
3-substituted Asp analogues, we designed and synthesized a total of 32 β-sulfonamide Asp analogues and characterized their pharmacological properties at the excitatory amino acid transporter subtypes EAAT1, EAAT2, and EAAT3. In addition to several potent EAAT inhibitors displaying IC50 values ∼1 μM at all three subtypes, this elaborate structure–activity relationship also identified analogues exhibiting distinct
在这项研究中,受先前在3-取代的Asp类似物上的研究启发,我们设计并合成了32种β-磺酰胺Asp类似物,并表征了它们在兴奋性氨基酸转运子亚型EAAT1,EAAT2和EAAT3上的药理特性。除了几种有效的EAAT抑制剂在所有三种亚型上均显示IC 50值约为1μM外,这种复杂的结构-活性关系还确定了对特定转运蛋白亚型表现出不同偏好或选择性的类似物。在苯环上引入两个氟原子可产生类似物4y,其在EAAT1处的IC 50为0.8μM,分别比EAAT2和EAAT3高14倍和9倍。相反,m -CF 3-苯基类似物4r是有效的选择性EAAT2抑制剂(IC 50 = 2.8μM),其选择性分别比EAAT1和EAAT3高30倍和50倍。总之,这些β-磺酰胺Asp类似物的即使很小的结构差异也提供了具有多种EAAT亚型选择性特征的类似物。