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Newly Synthesized Fluorinated Cinnamylpiperazines Possessing Low In Vitro MAO-B Binding

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2020
molecules-25-04941.pdf (1.461Mb)
Authors
Jevtić, Ivana
Lai, Thu Hang
Penjišević, Jelena
Dukić-Stefanović, Sladjana
Andrić, Deana
Brust, Peter
Kostić Rajačić, Slađana
Teodoro, Rodrigo
Article (Published version)
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Abstract
Herein, we report on the synthesis and pharmacological evaluation of ten novel fluorinated cinnamylpiperazines as potential monoamine oxidase B (MAO-B) ligands. The designed derivatives consist of either cinnamyl or 2-fluorocinnamyl moieties connected to 2-fluoropyridylpiperazines. The three-step synthesis starting from commercially available piperazine afforded the final products in overall yields between 9% and 29%. An in vitro competitive binding assay using l-[3H]Deprenyl as radioligand was developed and the MAO-B binding affinities of the synthesized derivatives were assessed. Docking studies revealed that the compounds 8–17 were stabilized in both MAO-B entrance and substrate cavities, thus resembling the binding pose of l-Deprenyl. Although our results revealed that the novel fluorinated cinnamylpiperazines 8–17 do not possess sufficient MAO-B binding affinity to be eligible as positron emission tomography (PET) agents, the herein developed binding assay and the insights gained ...within our docking studies will certainly pave the way for further development of MAO-B ligands.

Keywords:
MAO-B / positron emission tomography / piperazine / cinnamic acid
Source:
Molecules, 2020, 25, 21, 4941-
Publisher:
  • Basel, Switzerland : MDPI
Projects:
  • Ministry of Education, Science and Technological Development of the Republic of Serbia (grant No. 451-03-01732/2017-09/4) and the Deutscher Akademischer Austauschdienst (DAAD, grant No. 57391403) within the Bilateral project “Development of new fluorinated radioligands for PET imaging of monoamine oxidase B (MAO-B)”

DOI: 10.3390/molecules25214941

ISSN: 1420-3049

WoS: 000589372800001

Scopus: 2-s2.0-85094821384
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URI
https://cer.ihtm.bg.ac.rs/handle/123456789/4040
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