The synthesis of cyclic and acyclic long‐chain arylpiperazine derivatives of salicylamide as serotonin receptor ligands
作者:Piotr Kowalski、Jolanta Jaśkowska、Andrzej J. Bojarski、Beata Duszyńska
DOI:10.1002/jhet.5570450125
日期:2008.1
4-diones as well as O- and N-substituted salicylamides with an n-propyl chain were synthesized in order to explore the effect of cyclic and acyclic salicylamide moieties on their binding affinity for 5-HT1A, 5-HT2A and 5-HT7 receptor sites. Target compounds 1 and 2 were prepared by a two-step procedure, i.e. by alkylation of 1,3-benzoxazine-2,4-dione or salicylamide with 1,3-dibromopropane and next by condensation
合成了N-取代的1,3-苯并恶嗪-2,4-二酮的1-芳基哌嗪系列以及具有正丙基的O-和N-取代的水杨酰胺,以研究环状和无环水杨酰胺部分的作用它们对5-HT 1A,5-HT 2A和5-HT 7受体位点的结合亲和力。目标化合物1和2通过两步程序制备,即通过将1,3-苯并恶嗪-2,4-二酮或水杨酰胺与1,3-二溴丙烷烷基化,然后使3-溴丙基中间体与芳基哌嗪缩合;3-溴丙基中间体的合成在无溶剂条件下进行。通过水解1制备化合物3。关于水杨酰胺部分,对于相同的芳基哌嗪,对5-HT 1A和5-HT 7受体的结合亲和力根据衍生物3<1<2的等级而增加。关于5-HT 2A受体,配体活性的增加以与5-HT 1A的亲和力相反的顺序改变,即2 < 1 < 3。5-HT 1A和5-HT 7受体的结合常数对于2-甲氧基苯基配体2c最高,而3-氯苯基配体3b对5-HT 2A受体最活跃。