New pyridine derivatives as inhibitors of acetylcholinesterase and amyloid aggregation
A new series of pyridine derivatives with carbamic or amidic function has been designed and synthesized
to act as cholinesterase inhibitors. The synthesized compounds were tested toward EeAChE and hAChE
and toward eqBChE and hBChE. The carbamate 8 was the most potent hAChE inhibitor
(IC50 = 0.153 ± 0.016 uM) while the carbamate 11 was the most potent inhibitor of hBChE
(IC50 = 0.828 ± 0.067 uM). A molecular docking study indicated that the carbamate 8 was able to bind
AChE by interacting with both CAS and PAS, in agreement with the mixed inhibition mechanism.
Furthermore, the carbamates 8, 9 and 11 were able to inhibit Ab42 self-aggregation and possessed quite
low toxicity against human astrocytoma T67 and HeLa cell lines, being the carbamate 8 the less toxic
compound on both cell lines.