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  • N-alkylpiperidine carbamates as potential anti-Alzheimer's agents
    Košak, Urban ...
    Compounds capable of interacting with single or multiple targets involved in Alzheimer's disease (AD) pathogenesis are potential anti-Alzheimer's agents. In our aim to develop new anti-Alzheimer's ... agents, a series of 36 new N-alkylpiperidine carbamates was designed, synthesized and evaluated for the inhibition of cholinesterases [acetylcholinesterase (AChE) and butyrylcholinesterase (BChE)] and monoamine oxidases [monoamine oxidase A (MAO-A and monoamine oxidase B (MAO-B)]. Four compounds are very promising: multiple AChE (IC50 = 7.31 [micro]M), BChE (IC50 = 0.56 [micro]M) and MAO-B (IC50 = 26.1 [micro]M) inhibitor 10, dual AChE (IC50 = 2.25 [micro]M) and BChE (IC50 = 0.81 [micro]M) inhibitor 22, selective BChE (IC50 = 0.06 [micro]M) inhibitor 13, and selective MAO-B (IC50 = 0.18 [micro]M) inhibitor 16. Results of enzyme kinetics experiments showed that despite the carbamate group in the structure, compounds 10, 13, and 22 are reversible and non-time-dependent inhibitors of AChE and/or BChE. The resolved crystal structure of the complex of BChE with compound 13 confirmed the non-covalent mechanism of inhibition. Additionally, N-propargylpiperidine 16 is an irreversible and time-dependent inhibitor of MAO-B, while N-benzylpiperidine 10 is reversible. Additionally, compounds 10, 13, 16, and 22 should be able to cross the blood-brain barrier and are not cytotoxic to human neuronal-like SH-SY5Y and liver HepG2 cells. Finally, compounds 10 and 16 also prevent amyloid [beta]1-42 (A[beta]1-42)-induced neuronal cell death. The neuroprotective effects of compound 16 could be the result of its A[beta]1[beta]42 anti-aggregation effects.
    Source: European journal of medicinal chemistry. - ISSN 0223-5234 (Vol. 197, 2020, str. 1-24)
    Type of material - article, component part ; adult, serious
    Publish date - 2020
    Language - english
    COBISS.SI-ID - 15755267