Novel 5-Hydroxytryptamine (5-HT3) Receptor Antagonists. II. Synthesis and Structure-Activity Relationships of 4,5,6,7-Tetrahydro-1H-benzimidazole Derivatives.
作者:Mitsuaki OHTA、Takeshi SUZUKI、Junya OHMORI、Tokuo KOIDE、Akira MATSUHISA、Toshio FURUYA、Keiji MIYATA、Isao YANAGISAWA
DOI:10.1248/cpb.44.1000
日期:——
imidazole moiety unchanged as the amine part. The indole derivatives 7d, g, h and indolizine derivatives 7k, l were found to be highly potent on the von Bezold-Jarisch (B.J.) reflex test with ID50 values of below 0.1 microgram/kg, and the indoline derivative 6c, indole derivatives 7a, d, g, benzofurane derivative 7j and indolizine derivative 7k were observed to be very potent on the colonic contraction
制备了一系列新的4,5,6,7-四氢-1H-苯并咪唑衍生物4,5,6和7,并评估了其作为5-羟基色胺(5-HT3)受体拮抗剂的活性,可用于治疗肠易激综合症(IBS)以及与恶性肿瘤化疗相关的恶心和呕吐。通过修饰N-(2-甲氧基苯基)-4,5,6,7-四氢-1H-5-苯并咪唑基甲酰胺3的芳族羰基部分来设计这些化合物,而使咪唑部分保持为胺部分不变。发现在von Bezold-Jarisch(BJ)反射测试中,吲哚衍生物7d,g,h和吲哚嗪衍生物7k,l的ID50值低于0.1微克/千克,吲哚衍生物6c,吲哚衍生物7a具有很高的效力。 ,d,g,观察到苯并呋喃衍生物7j和吲哚嗪衍生物7k对结肠收缩非常有效,IC50值低于0.1 microM。特别是7l对BJ反射的作用最强(ID50 = 0.018微克/千克),比恩丹西酮1和Granisetron 2的作用强200到50倍,而7k对结肠收缩的作用最强(IC50