Heterocyclic excitatory amino acids. Synthesis and biological activity of novel analogs of AMPA
作者:Ulf Madsen、Erik H. F. Wong
DOI:10.1021/jm00079a013
日期:1992.1
The novel acidic amino acids 6a-c, 7, and 8 have been synthesized via 1,3-dipolar cycloadditions, using nitrile oxides and alkynes. The prepared compounds are heterocyclic analogues of glutamic acid with differing chain lengths. One of these compounds, (RS)-2-amino-3-(3-carboxy-5-methyl-4- isoxazolyl)propionic acid (ACPA, 8), was shown in [3H]AMPA binding studies to be more active than AMPA itself
通过使用腈和炔烃经1,3-偶极环加成合成了新的酸性氨基酸6a-c,7和8。所制备的化合物是具有不同链长的谷氨酸的杂环类似物。[3H] AMPA结合研究表明,其中一种化合物(RS)-2-氨基-3-(3-羧基-5-甲基-4-异恶唑基)丙酸(ACPA,8)比AMPA本身(IC50 = 20 nM,而AMPA的IC50 = 79 nM)。未发现对NMDA受体的亲和力(NMDA敏感的[3H]谷氨酸结合),仅检测到[3H]海藻酸结合的弱亲和力(IC50 = 6.3 microM)。在大鼠皮质楔形物中的兴奋性活性还表明ACPA比AMPA更有力(EC50 = 1.0 microM,而AMPA的EC50 = 3.5 microM)。