Chemoenzymatic Synthesis of a Series of 4-Substituted Glutamate Analogues and Pharmacological Characterization at Human Glutamate Transporters Subtypes 1−3
作者:Sebastien Alaux、Mie Kusk、Emanuelle Sagot、Jean Bolte、Anders A. Jensen、Hans Bräuner-Osborne、Thierry Gefflaut、Lennart Bunch
DOI:10.1021/jm050597z
日期:2005.12.1
4-syn-4-alkylglutamic acid analogues (1a-i) were synthesized in high yield and high enantiomeric excess (>99% ee) from their corresponding 4-substituted ketoglutaric acids (2a-i), using the enzyme aspartate aminotransferase (AAT) from pig heart or E. coli. The synthesized compounds were evaluated as potential ligands for the glutamate transporters EAAT1, EAAT2, and EAAT3 (excitatory amino acid transporter, subtypes
从其相应的4-取代的酮戊二酸(2a-i)以高收率和高对映体过量(> 99%ee)合成了九个L-2,4-syn-4-烷基谷氨酸类似物系列(1a-i) ,使用猪心脏或大肠杆菌中的天冬氨酸氨基转移酶(AAT)。在FLIPR膜电位(FMP)分析中,将合成的化合物评估为谷氨酸转运蛋白EAAT1,EAAT2和EAAT3(兴奋性氨基酸转运蛋白,亚型1-3)的潜在配体。当4-甲基(化合物1a,EAAT1底物和EAAT2,3抑制剂)扩展到4-乙基,化合物1b时,我们发现药理学特性发生了显着变化,因为该类似物是所有三种亚型的抑制剂,EAAT1-3。此外,我们得出的结论是,L-2的4位上的疏水取代基既大又庞大,