An Interactive SAR Approach to Discover Novel Hybrid Thieno Probes as Ligands for D2-Like Receptors with Affinities in the Subnanomolar Range
作者:Mohamed A. O. Abdel-Fattah、Jochen Lehmann、Ashraf H. Abadi
DOI:10.1002/cbdv.201300204
日期:2013.12
,3-dione derivatives was synthesized to serve as probes for dopaminergic receptors. Among this series, compound 6a showed the highest affinity towards D4 and D3 receptors with Ki values in the low nanomolar range, and D2/D4- and D2/D3-selectivity indices of 72 and 20, respectively. Optimization rounds were adopted and led to the D4-selective ligand thiophene-2-carboxamide 9a with a Ki (D4) value of
合成了一系列的[(苯基哌嗪基)烷基]-异吲哚-1,3-二酮衍生物,用作多巴胺能受体的探针。在该系列中,化合物6a对D4和D3受体的亲和力最高,Ki值在低纳摩尔范围内,D2 / D4-和D2 / D3-选择性指数分别为72和20。采用最优化回合,得到Ki(D4)值为0.62 nM的D4选择性配体噻吩-2-羧酰胺9a,其丁基类似物10a的Ki(D4)和Ki(D3)值为0.03和0.26 nM。对接实验揭示了独特的D4残基Arg186在操纵配体D4亚型受体选择性中的重要性。