Synthetic and computer-assisted analyses of the pharmacophore for the benzodiazepine receptor inverse agonist site
作者:Michael S. Allen、Yun C. Tan、Mark L. Trudell、Kris Narayanan、Liesl R. Schindler、Michael J. Martin、Christopher Schultz、Timothy J. Hagen、Konrad F. Koehler
DOI:10.1021/jm00171a007
日期:1990.9
for ligand binding to the benzodiazepine receptor (BzR) inverse agonist site were probed through the synthesis and in vitro evaluation of 3-substituted beta-carbolines 6, 7, 11, 12, gamma-carboline 13, and diindoles 18-21, 23-25, 27, 28, and 34. On the basis of the apparent binding affinities of these and other analogues, a hydrogen bond acceptor site (A2) on the receptor is proposed to interact with
通过3-取代的β-咔啉6、7、11、12,γ-咔啉13和二吲哚18-21的合成和体外评估,探讨了配体与苯并二氮杂receptor受体(BzR)反向激动剂结合的结构要求。 ,23-25、27、28和34。基于这些和其他类似物的表观结合亲和力,建议受体上的氢键受体位点(A2)与N(9)的氢原子相互作用β-咔啉或二吲哚的N(7)氢核。同样,提议的氢键供体位点(H1)与β-咔啉的N(2)氮原子或二吲哚的N(5)氮原子相互作用。看来与两个位点的相互作用是获得高亲和力的先决条件,因为具有一个或两个这些位置被封闭的类似物表现出亲和力的显着降低。此外,H1似乎能够与带有适当官能化的配体的三中心氢键结合,这解释了在下列一系列的3个取代的β-咔啉中观察到的效力增加:正丁基(12,IC50 = 245 nM),正丙氧基(9,IC50 = 11 nM)和丙基酮(11,IC50 = 2.8 nM)同类物。除H1和A