Synthesis and Structure−Affinity Relationships of Novel <i>N</i>-(1-Ethyl-4-methylhexahydro-1,4-diazepin-6-yl)pyridine-3-carboxamides with Potent Serotonin 5-HT<sub>3</sub> and Dopamine D<sub>2</sub> Receptor Antagonistic Activity
作者:Yoshimi Hirokawa、Iwao Fujiwara、Kenji Suzuki、Hiroshi Harada、Takashi Yoshikawa、Naoyuki Yoshida、Shiro Kato
DOI:10.1021/jm020270n
日期:2003.2.1
dopamine D(2) receptor while keeping a potent serotonin 5-HT(3) receptor binding affinity. As a result of structure-affinity relationships, the 5-bromo-2-methoxy-6-methylaminopyridine-3-carboxamide 53 was selected as the most promising product showing a high binding affinity for both receptors. Compound 53 affinity for the dopamine D(2) and serotonin 5-HT(3) receptors was much more potent than that of
制备了由相应的苯甲酰胺5衍生的N-(1-乙基-4-甲基六氢-1,4-二氮杂-6-6-基)吡啶-3-甲酰胺的结构原始系列,并评估了其对多巴胺D( 2)和分别使用大鼠纹状体和大鼠皮质膜的血清素5-HT(3)受体。许多合成的吡啶-3-羧酰胺对5-羟色胺5-HT(3)受体具有纳摩尔结合亲和力,对多巴胺D(2)受体具有中等至高结合亲和力。在吡啶环的5-位和6-位上分别引入更具亲脂性的溴原子和甲基氨基,增强了对多巴胺D(2)受体的亲和力,同时保持了强大的5-羟色胺5-HT(3)受体结合亲和力。由于结构相似性关系,选择5-溴-2-甲氧基-6-甲基氨基吡啶-3-羧酰胺53作为最有前途的产品,该产品对两种受体都具有高结合亲和力。化合物53对多巴胺D(2)和5-羟色胺5-HT(3)受体的亲和力比甲氧氯普胺(多巴胺D(2)受体; 23.3 nM对444 nM,5-羟色胺5-HT(3)受体的亲和力强得多。 0.97