Synthesis and Pharmacology of Mono-, Di-, and Trialkyl-Substituted 7-Chloro-3,4-dihydro-2<i>H</i>-1,2,4-benzothiadiazine 1,1-Dioxides Combined with X-ray Structure Analysis to Understand the Unexpected Structure–Activity Relationship at AMPA Receptors
作者:Anja Probst Larsen、Pierre Francotte、Karla Frydenvang、Daniel Tapken、Eric Goffin、Pierre Fraikin、Daniel-Henri Caignard、Pierre Lestage、Laurence Danober、Bernard Pirotte、Jette Sandholm Kastrup
DOI:10.1021/acschemneuro.5b00318
日期:2016.3.16
4-monoalkyl-substituted benzothiadiazine dioxides for which the cyclopropyl group constitutes the best choice of substituent. 7b was subjected to X-ray structural analysis in complex with the GluA2 ligand-binding domain. We propose an explanation of the unexpected structure–activity relationship of this new series of mono-, di-, and trialkyl-substituted 1,2,4-benzothiadiazine 1,1-dioxide compounds. The
2-氨基-3-(3-羟基-5-甲基异恶唑-4-基)丙酸(AMPA)型离子型谷氨酸受体的正构构调节剂是用于治疗神经系统疾病(例如阿尔茨海默氏病)的有前途的化合物。在这里,我们报告一系列单,二或三烷基取代的7-氯-3,4-二氢-2 H -1,2,4-苯并噻二嗪1,1-二氧化物的合成和药理学评估,其中包括总共16个新的调制器。三取代的化合物7b,7d和7e表现出有效的活性(EC 2x= 2.7–4.3μM;在体外细胞荧光测定(FLIPR)中作为AMPA受体增强剂的,负责AMPA介导的应答增加2倍的化合物的浓度。与先前描述的4-单烷基取代的苯并噻二二嗪二氧化物相反,4-环丙基化合物7f的效力明显较低(EC 2x = 60μM),其中环丙基是取代基的最佳选择。7b将其与GluA2配体结合结构域一起进行X射线结构分析。我们提出了这种新的单,二和三烷基取代的1,2,4-苯并噻二嗪1,1-二氧化物化合物系