Novel High-Affinity and Selective Biaromatic 4-Substituted γ-Hydroxybutyric Acid (GHB) Analogues as GHB Ligands: Design, Synthesis, and Binding Studies
作者:Signe Høg、Petrine Wellendorph、Birgitte Nielsen、Karla Frydenvang、Ivar F. Dahl、Hans Bräuner-Osborne、Lotte Brehm、Bente Frølund、Rasmus P. Clausen
DOI:10.1021/jm801112u
日期:2008.12.25
this study, a series of biaromatic 4-substituted GHB analogues, including 4'-phenethylphenyl, 4'-styrylphenyl, and 4'-benzyloxyphenyl GHB analogues, were synthesized and characterized pharmacologically in a [3H](E,RS)-(6,7,8,9-tetrahydro-5-hydroxy-5H-benzocyclohept-6-ylidene)acetic acid ([3H]NCS-382) binding assay and in GABA(A) and GABA(B) receptor binding assays. The compounds were selective for the
γ-羟基丁酸酯(GHB)是γ-氨基丁酸(GABA)的代谢产物,已被提议用作神经递质或神经调节剂。GHB用于发作性睡病的治疗,是一种滥用药物。GHB与GABA(B)受体和大脑中特定的高亲和力GHB位点都结合,后者并未明确地与功能相关,但据推测是GHB受体。在这项研究中,合成了一系列双芳香族4取代的GHB类似物,包括4'-苯乙基苯基,4'-苯乙烯基苯基和4'-苄氧基苯基GHB类似物,并在[3H](E,RS)-( 6,7,8,9-四氢-5-羟基-5H-苯并环庚-6-亚烷基)乙酸([3H] NCS-382)结合测定以及在GABA(A)和GABA(B)受体结合测定中。该化合物对高亲和力的GHB结合位点具有选择性,并且在100 nM以下显示了几个Ki值。已显示4- [4'-(2-碘苄氧基)苯基] GHB类似物17b的亲和力主要与R-对映异构体(Ki = 22 nM)存在,后者比以前报道的GHB配体具有更高的亲和力。