<i>N</i><sup>α</sup>-Imidazolylalkyl and Pyridylalkyl Derivatives of Histaprodifen: Synthesis and in Vitro Evaluation of Highly Potent Histamine H<sub>1</sub>-Receptor Agonists
作者:Sonja Menghin、Heinz H. Pertz、Kai Kramer、Roland Seifert、Walter Schunack、Sigurd Elz
DOI:10.1021/jm0309147
日期:2003.12.1
N(alpha)()-imidazolylalkyl and pyridylalkyl derivatives of histaprodifen (6, 2-[2-(3,3-diphenylpropyl)imidazol-4-yl]ethanamine) was synthesized and evaluated as histamine H(1)-receptor agonists. The title compounds displayed partial agonism at contractile H(1)-receptors of guinea pig ileum and were at least equipotent with histamine. Agonist effects of the new derivatives were susceptible to blockade by the
合成了一系列新的组胺苯丙胺的N(α)()-咪唑基烷基和吡啶基烷基衍生物(6,2- [2-(3,3-二苯丙基)咪唑--4-基]乙胺)并评估为组胺H(1) -受体激动剂。标题化合物在豚鼠回肠的收缩性H(1)受体上表现出部分激动作用,并且至少与组胺等价。新衍生物的激动剂作用易于受到H(1)-受体拮抗剂美吡拉敏(2-100 nM)的阻滞。在咪唑系列中,suprahistaprodifen(51,[2- [2-(3,3-二苯丙基)-1H-咪唑-4-基]乙基]-[2-(1H-咪唑-4-基)乙基]酰胺,N(α)-2-[((1H-咪唑-4-基)乙基]组己二酚)显示出有史以来最高的H(1)-受体激动剂效能(pEC(50)8.26,功效E(max) 96%)。烷基间隔物从乙基到丁基的延伸将活性从3630%(乙基,51)降低到163%(丁基,53)组胺效力。末端咪唑核交换成吡啶环产生具有相当高效力的化合物。当烷