Histaprodifens: Synthesis, Pharmacological in Vitro Evaluation, and Molecular Modeling of a New Class of Highly Active and Selective Histamine H<sub>1</sub>-Receptor Agonists
作者:Sigurd Elz、Kai Kramer、Heinz H. Pertz、Heiner Detert、Anton M. ter Laak、Ronald Kühne、Walter Schunack
DOI:10.1021/jm991056a
日期:2000.3.1
A new class of histamine analogues characterized by a 3, 3-diphenylpropyl substituent at the 2-position of the imidazole nucleus has been prepared outgoing from 4,4-diphenylbutyronitrile (4b) via cyclization of the corresponding methyl imidate 5b with 2-oxo-4-phthalimido-1-butyl acetate or 2-oxo-1,4-butandiol in liquid ammonia, followed by standard reactions. The title compounds displayed partial agonism
通过将相应的亚氨酸甲酯5b与2-氧代-环戊基环合,从4,4-二苯基丁腈(4b)制备了一类新的组胺类似物,其特征是在咪唑核的2位上有一个3,3-二苯丙基取代基。在液氨中的4-邻苯二甲酰亚胺基-1-乙酸丁酯或2-氧代-1,4-丁二醇,然后进行标准反应。标题化合物分别对豚鼠回肠和内皮剥脱的主动脉的收缩性H(1)受体表现出部分激动作用,但10(组胺布洛芬; 2- [2-(3,3-二苯丙基)-1H-咪达唑-4)除外-基]乙胺),在回肠测定中是完全激动剂。虽然10与组胺(1)等价,但是甲基组蛋白(13)和二甲基组蛋白(14)的功能效价比1高出3-5(13)和2-3(14)。化合物10和13-17放松了预收缩的大鼠主动脉环(完整内皮),相对效力为3.3至28倍(与1相比),也表现出部分激动作用。激动剂的作用对选择性H(1)-受体拮抗剂美吡拉敏(pA(2)约9(几内亚猪)和pA(2)约8(大鼠主动脉)的封