Discovery of novel series of 2-substituted benzo[d]oxazol-5-amine derivatives as multi-target directed ligands for the treatment of Alzheimer's disease

European Journal of Medicinal Chemistry
2019.0

Abstract

Alzheimer's disease (AD) is associated with multifactorial neuropathological conditions, which include cholinergic deficit, amyloid-beta plaques formation, loss of neuronal plasticity and neuronal death. Treating such multifactorial conditions with a single target directed approach is considered to be inadequate. Accordingly, multi-target directed ligand (MTDL) strategy has been evolved as an auspicious approach for the treatment of AD. In light of that, a library of 2-substituted benzo[d]oxazol-5-amine derivatives (29-39; 86-107) was designed using the scaffold hopping guided MTDLs strategy, synthesized and evaluated through various in-vitro and in-vivo biological studies. The optimal compound 92 exhibited potent inhibitory activities against AChE (IC<sub>50</sub> = 0.052 ± 0.010 μM), BuChE (IC<sub>50</sub> = 1.085 ± 0.035 μM), and significant amyloid-beta aggregation (20 μM) inhibition. The compound possessed better blood-brain barrier permeability (Pe = 10.80 ± 0.055 × 10<sup>-6</sup> cm s<sup>-1</sup>) in PAMPA assay and neuro protective properties (40 μM) on SH-SY5Y neuroblastoma cell lines. Furthermore, in-vivo behavioural studies were performed on Y-maze test (scopolamine-induced amnesia model) and Morris water maze test (Aβ<sub>1-42</sub> induced ICV rat model). The compound 92, at a dose of 10 mg/kg oral administration, demonstrated a substantial improvement of the cognitive and special memory impairment. In summary, both in-vitro and in-vivo investigations evidenced that compound 92 was a potential lead for the discovery of safe and effective disease-modifying agents for AD.

Knowledge Graph

Similar Paper

Discovery of novel series of 2-substituted benzo[d]oxazol-5-amine derivatives as multi-target directed ligands for the treatment of Alzheimer's disease
European Journal of Medicinal Chemistry 2019.0
Design, synthesis, and biological evaluation of novel (4-(1,2,4-oxadiazol-5-yl)phenyl)-2-aminoacetamide derivatives as multifunctional agents for the treatment of Alzheimer's disease
European Journal of Medicinal Chemistry 2022.0
Multifunctional 5,6-dimethoxybenzo[d]isothiazol-3(2H)-one-N-alkylbenzylamine derivatives with acetylcholinesterase, monoamine oxidases and β-amyloid aggregation inhibitory activities as potential agents against Alzheimer’s disease
Bioorganic &amp; Medicinal Chemistry 2018.0
Synthesis, biological evaluation and molecular docking study of novel piperidine and piperazine derivatives as multi-targeted agents to treat Alzheimer’s disease
Bioorganic &amp; Medicinal Chemistry 2015.0
Discovery of novel 2,5-dihydroxyterephthalamide derivatives as multifunctional agents for the treatment of Alzheimer’s disease
Bioorganic &amp; Medicinal Chemistry 2018.0
Design, synthesis, and evaluation of salicyladimine derivatives as multitarget-directed ligands against Alzheimer’s disease
Bioorganic &amp; Medicinal Chemistry 2017.0
Design, synthesis, and evaluation of novel N-(4-phenoxybenzyl)aniline derivatives targeting acetylcholinesterase, β-amyloid aggregation and oxidative stress to treat Alzheimer’s disease
Bioorganic &amp; Medicinal Chemistry 2019.0
Design, synthesis, in-silico and biological evaluation of novel chalcone derivatives as multi-function agents for the treatment of Alzheimer's disease
European Journal of Medicinal Chemistry 2019.0
Design and development of multitarget-directed N-Benzylpiperidine analogs as potential candidates for the treatment of Alzheimer's disease
European Journal of Medicinal Chemistry 2019.0
Synthesis, biological evaluation, and molecular modeling simulations of new heterocyclic hybrids as multi-targeted anti-Alzheimer's agents
European Journal of Medicinal Chemistry 2022.0