.sigma. Ligands with Subnanomolar Affinity and Preference for the .sigma.2 Binding Site. 2. Spiro-Joined Benzofuran, Isobenzofuran, and Benzopyran Piperidines
作者:Ejner K. Moltzen、Jens Perregaard、Eddi Meier
DOI:10.1021/jm00011a020
日期:1995.5
structural factors governing sigma 1/sigma 2 affinity and selectivity within this class of compounds. The N-substituent in spiro[isobenzofuran-1(3H),4'-piperidines] is highly important, both for affinity and selectivity. Spiropiperidines with no or small N-substituents (H, Me, Et) exert very low affinity for both sigma 1 and sigma 2 binding sites (IC50(sigma 1, sigma 2) > 100 nM), whereas medium-sized substituents
合成了螺[异苯并呋喃-1(3H),4'-哌啶]及相应的苯并呋喃和苯并吡喃衍生物,并作为σ配体进行了评估。这些化合物与Lu 28-179(1'-[4- [1-(4-氟苯基)-1H-吲哚-3-基] -1-丁基]螺[异苯并呋喃-1(3H),4'-哌啶]已被证明是选择性的sigma 2配体,其亲和力在亚纳摩尔范围内。该研究的目的是确定在这类化合物中控制sigma 1 / sigma 2亲和力和选择性的结构因素。螺[异苯并呋喃-1(3H),4'-哌啶]中的N-取代基对于亲和力和选择性都非常重要。没有或只有少量N取代基(H,Me,Et)的螺哌啶对sigma 1和sigma 2结合位点都具有非常低的亲和力(IC50(sigma 1,sigma 2)> 100 nM),而中等大小的取代基(例如Pr,Bu,Ph(CH2)2)会产生有效但非选择性的化合物(IC50(sigma 1,sigma 2)= 2-5