pmid: 31760822,   nlmid 101150203,  doi:10.1080/14756366.2019.1689237

Novel tacrine-benzofuran hybrids as potential multi-target drug candidates for the treatment of Alzheimer's Disease.

Fancellu, Gaia Chand, Karam Tomás, Daniel Orlandini, Elisabetta Piemontese, Luca Silva, Diana F Cardoso, Sandra M Chaves, Sílvia Santos, M Amélia

Vol. 35, Issue 35, Dec.2020

Journal of enzyme inhibition and medicinal chemistry (J Enzyme Inhib Med Chem),  ISSN 1475-6374


Pursuing the widespread interest on multi-target drugs to combat Alzheimer´s disease (AD), a new series of hybrids was designed and developed based on the repositioning of the well-known acetylcholinesterase (AChE) inhibitor, tacrine (TAC), by its coupling to benzofuran (BF) derivatives. The BF framework aims to endow the conjugate molecules with ability for inhibition of AChE (bimodal way) and of amyloid-beta peptide aggregation, besides providing metal (Fe, Cu) chelating ability and concomitant extra anti-oxidant activity, for the hybrids with hydroxyl substitution. The new TAC-BF conjugates showed very good activity for AChE inhibition (sub-micromolar range) and good capacity for the inhibition of self- and Cu-mediated A? aggregation, with dependence on the linker size and substituent groups of each main moiety. Neuroprotective effects were also found for the compounds through viability assays of neuroblastoma cells, after A? induced toxicity. Structure-activity relationship analysis provides insights on the best structural parameters, to take in consideration for future studies in view of potential applications in AD therapy.

MESH Headings

Acetylcholinesterase | Alzheimer Disease | Animals | Benzofurans | Cholinesterase Inhibitors | Dose-Response Relationship, Drug | Electrophorus | Humans | Models, Molecular | Molecular Structure | Neuroprotective Agents | Structure-Activity Relationship | Tacrine | metabolism | drug therapy | metabolism | chemistry | pharmacology | chemical synthesis | chemistry | pharmacology | chemical synthesis | chemistry | pharmacology | chemistry | pharmacology |

Article Keywords

AChE inhibitors | Alzheimer?s disease | metal chelators | multi-target drugs | tacrine-benzofuran hybrids |


Benzofurans | Cholinesterase Inhibitors | Neuroprotective Agents | Tacrine | Acetylcholinesterase | benzofuran |

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