Synthesis of (R,S)-trans-8-hydroxy-2-[N-n-propyl-N-(3'-iodo-2'-propenyl)amino]tetralin (trans 8-OH-PIPAT): a new 5-HT1A receptor ligand
作者:Zhi Ping Zhuang、Mei Ping Kung、Hank F. Kung
DOI:10.1021/jm00073a016
日期:1993.10
N-di-n-propylamino)tetralin] for in vitro and in vivo evaluation of 5-HT1A receptors, a new radioiodinated ligand was prepared. (R,S)-trans-8- Hydroxy-2-[N-n-propyl-N-(3'-iodo-2'-propenyl)amino]tetralin (trans-8-OH-PIPAT), 8, was synthesized by a 10-step reaction. Binding studies with rat hippocampal membrane homogenates showed that 8 exhibited a Ki value of 0.92 nM against (R,S)-[3H]-8-OH-DPAT. Radiolabeled
为了开发具有更高比活性的示踪剂,以取代目前使用的[3H] -8-OH-DPAT [8-羟基-2-(N,N-二-正丙基氨基)四氢化萘]进行体外和体内评估对于5-HT1A受体,制备了新的放射性碘配体。(R,S)-反式-8-羟基-2- [Nn-丙基-N-(3'-碘-2'-丙烯基)氨基]四氢化萘(反式-8-OH-PIPAT),通过合成10个步骤的反应。与大鼠海马膜匀浆的结合研究表明,针对(R,S)-[3H] -8-OH-DPAT,8的Ki值为0.92 nM。放射性标记的[125I] -8由相应的三正丁基锡前体通过与[125I]碘化钠的氧化碘十二烷基甲酰化反应制备。在海马匀浆中的结合研究表明[125I] -8与单个高亲和力位点结合(Kd = 0.38 +/- 0.03 nM,Bmax = 310 +/- 20 fmol / mg蛋白质)。竞争结合实验清楚地表明,新的配体显示出预期的5-HT1A受体结