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Tacrine Derivatives and Alzheimer's Disease

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To date, the pharmacotherapy of Alzheimer's disease (AD) has relied on acetylcholinesterase (AChE) inhibitors (AChEIs) and, more recently, an N-methyl-D-aspartate receptor (NMDAR) antagonist. AD is a multifactorial syndrome with several target proteins contributing to its etiology. “Multi-target-directed ligands” (MTDLs) have great potential for treating complex diseases such as AD because they can interact with multiple targets. The design of compounds that can hit more than one specific AD target thus represents an innovative strategy for AD treatment. Tacrine was the first AChEI introduced in therapy. Recent studies have demonstrated its ability to interact with different AD targets. Furthermore, numerous tacrine homo- and heterodimers have been developed with the aim of improving and enlarging its biological profile beyond its ability to act as an AChEI. Several tacrine hybrid derivatives have been designed and synthesized with the same goal. This review will focus on and summarize the last two years of research into the development of tacrine derivatives able to hit AD targets beyond simple AChE inhibition.
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Keywords: Neurodegenerative diseases; dual binding acetylcholinesterase inhibitors; multi-target-directed ligands (MTDLs); tacrine; tacrine heterodimers; tacrine homodimers; tacrine hybrids

Document Type: Research Article

Affiliations: Department of Pharmaceutical Sciences, Alma Mater Studiorum, University of Bologna, Via Belmeloro 6, 40126 Bologna, Italy.

Publication date: 2010-06-01

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