Abstract:
:Tacrine and PBT2 (an 8-hydroxyquinoline derivative) are well-known drugs that inhibit cholinesterases and decrease beta-amyloid (Abeta) levels by complexation of redox-active metals, respectively. In this work, novel tacrine-8-hydroxyquinoline hybrids have been designed, synthesized, and evaluated as potential multifunctional drugs for the treatment of Alzheimer's disease. At nano- and subnanomolar concentrations they inhibit human acetyl- and butyrylcholinesterase (AChE and BuChE), being more potent than tacrine. They also displace propidium iodide from the peripheral anionic site of AChE and thus could be able to inhibit Abeta aggregation promoted by AChE. They show better antioxidant properties than Trolox, the aromatic portion of vitamin E responsible for radical capture, and display neuroprotective properties against mitochondrial free radicals. In addition, they selectively complex Cu(II), show low cell toxicity, and could be able to penetrate the CNS, according to an in vitro blood-brain barrier model.
journal_name
J Med Chemjournal_title
Journal of medicinal chemistryauthors
Fernández-Bachiller MI,Pérez C,González-Muñoz GC,Conde S,López MG,Villarroya M,García AG,Rodríguez-Franco MIdoi
10.1021/jm100329qsubject
Has Abstractpub_date
2010-07-08 00:00:00pages
4927-37issue
13eissn
0022-2623issn
1520-4804journal_volume
53pub_type
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