Synthesis of novel 3-substituted .beta.-carbolines as benzodiazepine receptor ligands: probing the benzodiazepine receptor pharmacophore
作者:Michael S. Allen、Timothy J. Hagen、Mark L. Trudell、Penelope W. Codding、Phil Skolnick、James M. Cook
DOI:10.1021/jm00117a029
日期:1988.9
and 5-7 were prepared from 3-amino-beta-carboline (8) in one step via diazotization, followed by reaction with the appropriate nucleophile in order to determine their binding affinity for benzodiazepine receptors (BzR). All three of the 3-alkoxy-beta-carbolines 2 (IC50 = 124 nM), 3 (IC50 = 24 nM), and 4 (IC50 = 11 nM) have high affinities for BzR. The beta-carbolines substituted with electron-withdrawing
由3-氨基-β-咔啉(8)通过重氮化一步一步制备3-取代的β-咔啉2-4和5-7,然后与适当的亲核试剂反应以确定它们对苯并二氮杂receptor受体的结合亲和力(BzR)。3-烷氧基-β-咔啉2(IC50 = 124 nM),3(IC50 = 24 nM)和4(IC50 = 11 nM)中的所有三个均具有高的BzR亲和力。被5个(Cl; IC50 = 45 nM),6个(NO2; IC50 = 125 nM)和7个(N = C = S; IC50 = 8 nM)的吸电子基团取代的β-咔啉也具有很高的亲和力BzR。5-8的亲和力清楚地表明,与BzR的高亲和力结合不需要β-咔啉的3位羰基部分。这些发现导致了配体与BzR的反向激动剂结构域结合的模型的开发。