Add time:07/20/2019         Source:sciencedirect.com

Alzheimer's disease (AD) is a complex neurological disorder with diverse underlying pathological processes. Several lines of evidence suggest that BACE1 is a key enzyme in the pathogenesis of AD and its inhibition is of particular importance in AD treatment. Ten new 3-hydrazinyl-1,2,4-triazines bearing pendant aryl phenoxy methyl-1,2,3-triazole were synthesized as multifunctional ligands against AD. We show that compounds containing Cl and NO2 groups at the para position of the phenyl ring, namely compounds 7c (IC50 = 8.55 ± 3.37 µM) and 7d (IC50 = 11.42 ± 2.01 µM), possess promising BACE1 inhibitory potential. Furthermore, we assessed the neuroprotective activities of 7c and 7d derivatives in PC12 neuronal cell line, which showed moderate protection against amyloid β peptide toxicity. In addition, compound 7d demonstrated metal chelating activity and moderate antioxidant potential (IC50 = 44.42 ± 7.33 µM). Molecular docking studies of these molecules revealed high-affinity binding to several amino acids of BACE1, which are essential for efficient inhibition. These results demonstrate that 1,2,4-triazine derivatives bearing an aryl phenoxy methyl-1,2,3-triazole have promising properties as therapeutic agents for AD.

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