Cardanol-derived AChE inhibitors: Towards the development of dual binding derivatives for Alzheimer's disease.

Abstract:

:Cardanol is a phenolic lipid component of cashew nut shell liquid (CNSL), obtained as the byproduct of cashew nut food processing. Being a waste product, it has attracted much attention as a precursor for the production of high-value chemicals, including drugs. On the basis of these findings and in connection with our previous studies on cardanol derivatives as acetylcholinesterase (AChE) inhibitors, we designed a novel series of analogues by including a protonable amino moiety belonging to different systems. Properly addressed docking studies suggested that the proposed structural modifications would allow the new molecules to interact with both the catalytic active site (CAS) and the peripheral anionic site (PAS) of AChE, thus being able to act as dual binding inhibitors. To disclose whether the new molecules showed the desired profile, they were first tested for their cholinesterase inhibitory activity towards EeAChE and eqBuChE. Compound 26, bearing an N-ethyl-N-(2-methoxybenzyl)amine moiety, showed the highest inhibitory activity against EeAChE, with a promising IC50 of 6.6 μM, and a similar inhibition profile of the human isoform (IC50 = 5.7 μM). As another positive feature, most of the derivatives did not show appreciable toxicity against HT-29 cells, up to a concentration of 100 μM, which indicates drug-conform behavior. Also, compound 26 is capable of crossing the blood-brain barrier (BBB), as predicted by a PAMPA-BBB assay. Collectively, the data suggest that the approach to obtain potential anti-Alzheimer drugs from CNSL is worth of further pursuit and development.

journal_name

Eur J Med Chem

authors

Lemes LFN,de Andrade Ramos G,de Oliveira AS,da Silva FMR,de Castro Couto G,da Silva Boni M,Guimarães MJR,Souza INO,Bartolini M,Andrisano V,do Nascimento Nogueira PC,Silveira ER,Brand GD,Soukup O,Korábečný J,Romeiro NC,Cas

doi

10.1016/j.ejmech.2015.12.024

subject

Has Abstract

pub_date

2016-01-27 00:00:00

pages

687-700

eissn

0223-5234

issn

1768-3254

pii

S0223-5234(15)30412-8

journal_volume

108

pub_type

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