New and versatile approaches to the synthesis of CPP-related competitive NMDA antagonists. Preliminary structure activity relationships and pharmacological evaluation
作者:Sheryl J. Hays、Christopher F. Bigge、Perry M. Novak、James T. Drummond、Thomas P. Bobovski、Michael J. Rice、Graham Johnson、Laura J. Brahce、Linda L. Coughenour
DOI:10.1021/jm00172a037
日期:1990.10
Fourteen new CPP analogues have been prepared with methyl 1-(phenylmethyl) (+/-)-1,2-piperazinedicarboxylate 3 as a versatile synthetic intermediate. Derivatives were evaluated as NMDA ligands by their ability to displace [3H]CPP from rat cortical membranes. The binding affinity of various chain lengths at the N4-position of the CPP analogues, 5a, 5b, and 9a mimics the binding affinity observed for
已经用1-(苯基甲基)(+/-)-1,2-哌嗪二羧酸甲酯3作为通用的合成中间体制备了十四种新的CPP类似物。通过从大鼠皮膜置换[3H] CPP的能力,将衍生物评估为NMDA配体。在CPP类似物5a,5b和9a的N4位的各种链长的结合亲和力模拟了对无环衍生物AP6,AP8和AP5观察到的结合亲和力。与结构相似的哌啶化合物CGS 19755相比,在其膦酸酯侧链中具有一个亚甲基的类似物9a对NMDA受体的亲和力降低。用可单电离的酸性基团(例如羧酸根或次膦酸根)取代膦酸部分降低结合亲和力。N4-氮和远端酸性基团之间的芳基间隔基对键合有害,就像在N1-位上的烷基化一样。然而,如类似物21和22所示,当苯基位于膦酸酯的α处时,对立体异构体的耐受性更好。