Dopamine receptor agonist activity of some 5-(2-aminoethyl)carbostyril derivatives
作者:Carl Kaiser、Penelope A. Dandridge、Eleanor Garvey、Kathryn E. Flaim、Robert L. Zeid、J. Paul Hieble
DOI:10.1021/jm00150a010
日期:1985.12
modification of the catechol ring of dopamine, a series of 5-(2-aminoethyl)carbostyril derivatives was prepared and examined for D-1 and D-2 dopamine receptor-stimulating activity. Only the parent compound, 5-(2-aminoethyl)-8-hydroxycarbostyril (2), produced measurable activation of dopamine-sensitive adenylate cyclase (29% at a concentration of 10 microM). Some of the compounds, however, did produce significant
β-肾上腺素受体激动剂,例如异丙肾上腺素,通过用羧甲苯乙烯系统的NH基团取代间the基羟基而显着提高了其效力。为了探索在多巴胺的邻苯二酚环进行类似修饰后可能发生可比的效能增强的可能性,制备了一系列的5-(2-氨基乙基)咔司替利衍生物并检查了D-1和D-2多巴胺受体刺激活性。只有母体化合物5-(2-氨基乙基)-8-羟基卡斯托基利(2)产生可测量的多巴胺敏感性腺苷酸环化酶激活(29%,浓度为10 microM)。但是,其中一些化合物确实在测试中产生了显着的活性,即从牛垂体匀浆中置换了[3H]螺哌啶醇的结合物,以及分离的灌流兔耳动脉制剂,测量与D-2受体的相互作用。通过8-羟基化作用和乙胺侧链氨基的适当取代,可增强咔唑的效价。该系列中最有效的成员是8-羟基-5- [2-[[[2-(4-(羟基羟基苯基)乙基]-正丙基氨基]乙基]甲苯乙烯基(16b)。在D-2受体测试中,该化合物比多巴胺有效约3倍。