We have prepared a series of tetrahydro-beta-carbolines (TH beta C), beta-carbolines (beta-C), and other nitrogen heterocycles and evaluated them in vitro with respect to their ability to bind to benzodiazepine receptors. The fully aromatic beta-C's were more potent than their corresponding TH beta C derivatives. When substituents possessing a carbonyl (CO2Me, COCH3, CHO) were introduced at the beta-C
我们已经制备了一系列四氢-β-咔啉(THβC),β-咔啉(β-C)和其他氮杂环,并在体外对其结合苯并二氮杂receptor受体的能力进行了评估。完全芳族的β-C比其相应的THβC衍
生物更有效。当将具有羰基的取代基(CO2Me,COCH3,CHO)引入β-C3位时,体外效能会增强。
酒精取代基(CH2OH,CHOHCH3)表现出降低的体外效能。当显示β-咔啉-3-
羧酸在较低pH下与苯并二氮杂receptor受体更紧密结合时,羰基部分的重要性得到进一步证明。较低的pH值会增加酸的浓度,并降低阴离子的浓度。3-(羟甲基)-β-咔啉(24),3-甲酰基-β-咔啉(25)和3-乙酰基-β-咔啉(27)是体内苯二氮卓类拮抗剂。异
喹啉-3-羧酸甲酯(31a)也具有体外活性。对于
异喹啉,也观察到了在β-C中看到的相同的构效关系。