4<i>H</i>-1,2,4-Pyridothiadiazine 1,1-Dioxides and 2,3-Dihydro-4<i>H</i>-1,2,4-pyridothiadiazine 1,1-Dioxides Chemically Related to Diazoxide and Cyclothiazide as Powerful Positive Allosteric Modulators of (<i>R</i>/<i>S</i>)-2-Amino-3-(3-hydroxy-5-methylisoxazol-4-yl)propionic Acid Receptors: Design, Synthesis, Pharmacology, and Structure−Activity Relationships
作者:Bernard Pirotte、Tchao Podona、Ousmane Diouf、Pascal de Tullio、Philippe Lebrun、Léon Dupont、Fabian Somers、Jacques Delarge、Philippe Morain、Pierre Lestage、Jean Lepagnol、Michael Spedding
DOI:10.1021/jm970694v
日期:1998.7.1
4-pyridothiadiazine 1,1-dioxides bearing various alkyl and aryl substituents on the 2-, 3-, and 4-positions was synthesized and tested as possible positive allosteric modulators of the (R/S)-2-amino-3-(3-hydroxy-5-methylisoxazol-4-yl)propionic acid (AMPA) receptors. Many compounds were found to be more potent than the reference compounds diazoxide and aniracetam as potentiators of the AMPA current in rat cortex mRNA-injected
一系列在2、3上带有各种烷基和芳基取代基的4H-1,2,4-吡啶并二嗪1,1-二氧化物和2,3-二氢-4H-1,2,4-吡啶并二嗪1,1-二氧化物合成4-位,并作为(R / S)-2-氨基-3-(3-羟基-5-甲基异恶唑-4-基)丙酸(AMPA)受体的可能的正变构调节剂进行测试。在大鼠皮层mRNA注射的爪蟾卵母细胞中,发现许多化合物比参考化合物二氮嗪和阿尼西坦更有效,可作为AMPA电流的增强剂。最具活性的化合物4-乙基-2,3-二氢-4H-吡啶并[3,2-e] -1,2,4-噻二嗪1,1-二氧化物(31b)表现出对爪蟾卵母细胞的体外活性距环噻嗪不远,后者是迄今为止报道的最有效的AMPA受体变构调节剂。而且,31b,但不是环噻嗪,被发现增强电刺激大鼠海马切片中的兴奋性突触后场电位的持续时间和幅度。对于31b而言,但对于环噻嗪而言,这种作用可能表明与位于海马CA1神经元上的突触后AMPA受体结