trans-Hexahydroindolo[4,3-ab]phenanthridines ("benzergolines"), the first structural class of potent and selective dopamine D1 receptor agonists lacking a catechol group
作者:Max P. Seiler、Alexander Hagenbach、Hans Juerg Wuethrich、Rudolf Markstein
DOI:10.1021/jm00105a047
日期:1991.1
In contrast to the many selective dopamine (DA) D2 receptor agonists known, only two prototypes of selective D1 receptor agonists have been described; both show preference for the periphery due to their catechol partial structures. Our search for non-catechol, selective D1 agonists was based on the hypothesis that D1 selectivity could be conferred upon ergolines by annulation with a phenyl ring. The
与已知的许多选择性多巴胺(DA)D2受体激动剂相反,仅描述了选择性D1受体激动剂的两个原型。由于它们的邻苯二酚部分结构,它们都表现出对周边的偏爱。我们对非邻苯二酚,选择性D1激动剂的研究基于以下假设:D1选择性可以通过与苯环环合而赋予麦角灵。通过使用二宫烯酰胺光环化反应,有效地合成了目标分子,即反式-4,6,6a,7,8,12b-六氢吲哚-[4,3-ab]菲啶酮(“苯甲啉”)。发现这些化合物与腺苷酸环化酶D1受体模型中最有效的D1激动剂一样有活性,但在ACh释放D2受体测定中没有活性。与相应的麦角灵相比,新结构获得的亚型选择性伴随着增强的效能和功效。这指出了D1亲和力增强,D2受体对另外的苯基的区分作用,并为D1受体特异性辅助芳基结合位点的存在提供了进一步的支持。因此,苯甲麦角林是缺乏邻苯二酚基团的有效和选择性D1激动剂的第一结构类别,其应允许有效的中枢神经系统渗透。基于这些结果,必须从有