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Bivalent beta-carbolines as potential multitarget anti-Alzheimer agents

Bivalent beta-carbolines as potential multitarget anti-Alzheimer agents

Journal of Medicinal Chemistry 53(9): 3611-3617

Alzheimer's disease (AD) is a prevalent neurodegenerative disorder with multifactorial causes that requires multitargeted treatment. Inhibitors of acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) improve cholinergic signaling in the central nervous system and thus AChE inhibitors are well established in the therapy of AD to improve memory disturbances and other cognitive symptoms. On the other hand, AD patients benefit from reduction of pathologic glutamate-induced, Ca(2+)-mediated excitotoxicity by the N-methyl-d-aspartate receptor (NR) antagonist memantine. New drugs that simultaneously affect both cholinergic transmission and glutamate-induced excitotoxicity may further improve AD treatment. While connecting beta-carboline units by alkylene spacers in two different series of compounds and subsequent evaluation of their AChE/BChE-inhibitory potential, we found that several of these bivalent beta-carbolines were potent NR blockers. The most promising compound was a N(9)-homobivalent beta-carboline with a nonylene spacer, which displayed IC(50) values of 0.5 nM for AChE, 5.7 nM for BChE, and 1.4 microM for NR, respectively.

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Accession: 051828727

Download citation: RISBibTeXText

PMID: 20361801

DOI: 10.1021/jm1000024

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