Heteroaryl Analogues of AMPA. 2. Synthesis, Absolute Stereochemistry, Photochemistry, and Structure−Activity Relationships
作者:Erik Falch、Lotte Brehm、Ivan Mikkelsen、Tommy N. Johansen、Niels Skjærbæk、Birgitte Nielsen、Tine B. Stensbøl、Bjarke Ebert、Povl Krogsgaard-Larsen
DOI:10.1021/jm9801206
日期:1998.7.1
7c (IC50 = 5.5 +/- 0.6 microM; EC50 = 96 +/- 5 microM) was shown to be markedly weaker than 7a (IC50 = 0.57 +/- 0.16 microM; EC50 = 7.4 +/- 0.2 microM) as an AMPA agonist, whereas 7b,d,e were inactive. The very potent AMPA agonist effect of 7f (IC50 = 0.15 +/- 0.03 microM; EC50 = 1.7 +/- 0. 2 microM) was shown to reside exclusively in 8 (IC50 = 0.11 +/- 0.01 microM; EC50 = 0.71 +/- 0.11 microM), whereas
先前我们已经表明(S)-2-氨基-3-(3-羟基-5-苯基-4-异恶唑基)丙酸[(S)-APPA,2]是(RS)-2-的弱激动剂氨基-3-(3-羟基-5-甲基-4-异恶唑基)丙酸(AMPA)受体,被(S)-AMPA(1)特异性激活,而(S)-2-氨基-3- [3-羟基-5-(2-吡啶基)-4-异恶唑基]丙酸[[(S)-2-Py-AMPA,5]和(RS)-2-氨基-3- [3-羟基-5-(2-噻唑基)-4-异恶唑基]丙酸(4)是有效的AMPA激动剂。另一方面,(R)-APPA(3)和(R)-2-Py-AMPA(6)被证明是弱AMPA拮抗剂。现在,我们报告了2-Py-AMPA(7a)和异构体化合物3-Py-AMPA(7b)和4-Py-AMPA(7c)以及7a类似物(RS)-2-amino-的合成3- [3-羟基-5-(6-甲基-2-吡啶基)-4-异恶唑基]丙酸(7d)和(RS)-2-氨基-3-