Synthesis and receptor affinities of some conformationally restricted analogs of the dopamine D1 selective ligand (5R)-8-chloro-2,3,4,5-tetrahydro-3-methyl-5-phenyl-1H-3-benzazepin-7-ol
作者:Joel G. Berger、Wei K. Chang、John W. Clader、Donald Hou、Richard E. Chipkin、Andrew T. McPhail
DOI:10.1021/jm00128a038
日期:1989.8
The synthesis of a structurally novel series of 6,6a,7,8,9,13b-hexahydro-5H-benzo[d]naphtho[2,1-b]azepines (2), conformationally restricted analogues of the dopamine D1 antagonist (5R)-8-chloro-2,3,4,5-tetrahydro-3-methyl-5-phenyl-1H-3-benzazepin -7-ol (SCH 23390, 1c), is described. Affinity for D1 receptors was determined by competition for rat striatal binding sites labeled by [3H]SCH 23390; affinity
合成结构新颖的6,6a,7,8,9,13b-六氢-5H-苯并[d]萘并[2,1-b]氮杂s(2),多巴胺D1拮抗剂的构象受限类似物(描述了5R)-8-氯-2,3,4,5-四氢-3-甲基-5-苯基-1H-3-苯并ze庚因-7-ol(SCH 23390,1c)。通过竞争由[3H] SCH 23390标记的大鼠纹状体结合位点来确定D1受体的亲和力;通过使用[3H] spiperone的竞争实验类似地确定了对D2受体的亲和力。该系列具有B / C-反式环连接的化合物(2b和相关类似物),其中D环明确固定在赤道方向上,与D2受体相比,其D1受体亲和力和选择性比构象上的顺式立体异构体高得多(2a),因此得出这样的结论,即苯并庚因核的4或5位的轴向取代基对D1受体亲和力有害。分离度和X射线分析表明D1受体亲和力优先与2b的(-)-6aS,13bR对映体相关。