Bioisosterically modified dipeptide excitatory amino acid receptor antagonists containing 3-oxygenated isothiazole ring systems
作者:Lisa Matzen、Bjarke Ebert、Tine B. Stensbøl、Bente Frølund、Jerzy W. Jaroszewski、Povl Krogsgaard-Larsen
DOI:10.1016/s0968-0896(97)00110-7
日期:1997.8
The AMPA receptor agonist Thio-AMPA, the 3-isothiazolol analogue of AMPA was converted into the selective NMDA antagonist, 2, in which a 3-isothiazolone unit is a bioisosteric analogue of the peptide bond of the NMDA antagonist, gamma-(R)-Glu-Gly. The isomeric 3-oxygenated isothiazole amino acid, 3, and the corresponding isothiazole phosphono amino acid 4 were also synthesized, and were shown to be
AMPA受体激动剂Thio-AMPA,即AMPA的3-异噻唑醇类似物被转化为选择性NMDA拮抗剂2,其中3-异噻唑酮单元是NMDA拮抗剂的肽键gamma-(R)的生物立体异构体。 -Glu-Gly。还合成了异构体3-氧化的异噻唑氨基酸3和相应的异噻唑膦酰基氨基酸4,它们被证明是选择性AMPA受体拮抗剂。合成了化合物1,其中γ-(R)-Glu-Gly的肽键被一个酯基取代,并显示在测试缓冲液系统中不稳定。