Substituted benzo[d]oxazol-2(3H)-one derivatives with preference for the σ1 binding site☆
摘要:
We describe here the synthesis and the binding interaction with sigma(1) and sigma(2) receptors of a series of new benzo[d]oxazol-2(3H)-one derivatives variously substituted on the N-benzyl moiety. The results of binding studies confirm the notion that the benzoxazolone moiety confers preference towards sigma(1) sites and establish that the ability to bind to sigma(1), but not to sigma(2) receptors, is strongly affected by the kind and the position of the substituents introduced in the N-benzyl ring. In fact, compounds with substitutions in para-position with atoms of Cl, H or F or with a CH3 group exhibit a higher affinity for sigma(1) receptors than the corresponding ortho-substituted compounds. The highest affinity and selectivity, with K-i values of 0.1 and 427 nM for sigma(1) and sigma(2) receptors, respectively, and a corresponding K-i sigma(2)/K-i sigma(1) selectivity ratio of 4270 were found for the Cl-substituted compound.These results indicate that benzo[d]oxazol-2(3H)-one derivatives are among the most selective and sigma(1) receptor-preferring ligands currently available. (C) 2008 Elsevier Masson SAS. All rights reserved.
COMPOSITIONS AND METHODS FOR TREATING NEURODEGENERATIVE DISEASE
申请人:Catalano Susan M.
公开号:US20140378460A1
公开(公告)日:2014-12-25
This invention relates to the use sigma-2 receptor antagonists, and of pharmaceutical compositions comprising such compounds, in methods for inhibiting Abeta-associated synapse loss or synaptic dysfunction in neuronal cells, modulating an Abeta-associated membrane trafficking change in neuronal cells, and treating cognitive decline associated with Abeta pathology and more broadly treating with such compounds and compositions neurodegenerative diseases and disorders associated with Abeta pathology. This invention also relates to methods for screening compounds for activity in inhibiting cognitive decline on the basis of their ability to bind to a sigma-2 receptor.