[EN] SPIRO-PYRANO-PYRAZOLE DERIVATIVES<br/>[FR] DÉRIVÉS DE SPIRO-PYRANO-PYRAZOLE
申请人:ESTEVE LABOR DR
公开号:WO2008125349A1
公开(公告)日:2008-10-23
[EN] The present invention relates to compounds of formula (I) having pharmacological activity towards the sigma (s) receptor, and more particularly to some spiro-pyrano-pyrazole derivatives, to processes of preparation of such compounds, to pharmaceutical compositions comprising them, and to their use in therapy and prophylaxis, in particular for the treatment of psychosis. [FR] Cette invention concerne des composés représentés par la formule (I) ayant une activité pharmacologique vis-à-vis du récepteur sigma (s). Plus particulièrement, cette invention concerne certains dérivés de spiro-pyrano-pyrazole, des procédés permettant de préparer de tels composés, des compositions pharmaceutiques comprenant de tels composés, ainsi que leur utilisation à des fins thérapeutiques et prophylactiques, plus particulièrement pour traiter la psychose.
EP1982987
申请人:——
公开号:——
公开(公告)日:——
Synthesis and structure–affinity relationships of novel spirocyclic σ receptor ligands with furopyrazole structure
The synthesis of novel spirocyclic sigma receptor ligands with high affinity is described. The cyclization of the hydroxy acetal 8, which represents a key step in the synthesis of the spirocyclic compounds 3, was supported by theoretical considerations. The affinity of the spirocyclic furopyrazoles 3a-c to the sigma receptors was determined in receptor binding studies with radioligands. The N-benzyl (3b) and N-butyl (3c) derivatives display very high sigma(1) receptor affinity (3b, K-i = 0.50 nM; 3c, K-i = 1.28 nM) and high selectivity toward the sigma(2) receptor and some other receptor systems. Calculation of crucial distances of the spirocyclic furopyrazole derivatives 3b and 3c shows good correlation with the pharmacophore model of Glennon. (C) 2007 Elsevier Ltd. All rights reserved.