Bis-(-)-nor-meptazinols (bis-(-)-nor-MEPs) 5 were designed and synthesized by connecting two (-)-nor-MEP monomers with alkylene linkers of different lengths via the secondary amino groups. Their acetylcholinesterase (AChE) inhibitory activities were more greatly influenced by the length of the alkylene chain than butyrylcholinesterase (BChE) inhibition. The most potent nonamethylene-tethered dimer
MEPTAZINOL BILIGAND DERIVATIVES AND/OR THEIR SALTS, PREPARATION METHOD AND USES THEREOF
申请人:Fudan University
公开号:EP2048134B1
公开(公告)日:2015-09-23
Meptazinol Biligand Derivatives and/or their Salts, Preparation Method and Uses Thereof
申请人:Qiu Zhuibai
公开号:US20100035861A1
公开(公告)日:2010-02-11
The present invention belongs to pharmaceutical field. It relates to a novel family of bivalent (−)-meptazinol compounds and/or their salts, as well as the preparation and utilization of the compounds in the treatment of neurodegenerative disorders and dementias such as Alzheimer's Disease (AD). In the present invention, bivalent (−)-meptazinol compounds were synthesized, from the starting material (−)-meptazinol, successively by N-demethylation forming (−)-nor-meptazinol and then by acylation with α,ω-alkanediacyl dihalides or alkylation with α,ω-dihaloalkanes. Results from in vitro cholinesterase inhibiting test and AChE-induced Aβ aggregation test demonstrated that the bivalent (−)-meptazinol compounds and/or their salts were novel bivalent inhibitors of both ACHE and Aβ aggregation. The most potent compound inhibited both ACHE and BCHE at nM level, which was 10000 and 1500 times more potent than (−)-MEP hydrochloride, respectively. It inhibited ACHE-induced Aβ aggregation by a factor of 2 compared with propidium.