Novel Spiropiperidines as Highly Potent and Subtype Selective σ-Receptor Ligands. Part 1
作者:Christoph A. Maier、Bernhard Wünsch
DOI:10.1021/jm010992z
日期:2002.1.1
excellent selectivity toward sigma(2)-receptors (sigma(1)/sigma(2) = 2708 and 1130) and several other receptor and reuptake systems. Introduction of a polar hydroxy group in position 3 and elongation of the distance between the piperidine nitrogen atom and the phenyl moiety result in ligands with considerable sigma(2)-receptor affinity and therefore diminished sigma(1)/sigma(2)-receptor selectivity. The
制备了一系列具有通用结构10的螺[[2]苯并吡喃-1,4'-哌啶]和螺[[2]苯并呋喃-1,4'-哌啶],并与sigma(1)-和sigma亲和(2)通过放射性配体结合试验研究受体。螺哌啶14a和23的合成是通过溴缩醛11和21的溴/锂交换,添加到哌啶-4-酮12a中以及随后的环化而进行的。进行了氮原子上的取代基R,3位上的基团X和氧杂环的环大小的系统变化。分别使用[(3)H]标记的(+)-戊唑嗪和Ditolylguanidine用豚鼠脑和大鼠肝膜制剂确定sigma(1)-和sigma(2)-受体的亲和力。测试结果表明,哌啶氮原子上的苄基残基和3位上的甲氧基对高σ(1)-受体亲和力有利。在这个系列中,1'-苄基-3-甲氧基-3,4-二氢螺[[2]苯并吡喃-1,4'-哌啶](14a)和1'-苄基-3-甲氧基-3H-螺[[ 2]苯并呋喃-1,4'-哌啶](23)是在低纳摩尔范围内与sigma(