Benzobicyclo[3.2.1]octene Derivatives as a New Class of Cholinesterase Inhibitors

A library of amine, oxime, ether, epoxy and acyl derivatives of the benzobicyclo[3.2.1]octene were synthesized and evaluated as inhibitors of both human acetylcholinesterase (AChE) and butyrylcholinesterase (BChE). The majority of the tested compounds exhibited higher selectivity for BChE. Structura...

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Main Authors: Tena Čadež, Ana Grgičević, Ramiza Ahmetović, Danijela Barić, Nikolina Maček Hrvat, Zrinka Kovarik, Irena Škorić
Format: Article
Language:English
Published: MDPI AG 2020-10-01
Series:Molecules
Subjects:
Online Access:https://www.mdpi.com/1420-3049/25/21/4872
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author Tena Čadež
Ana Grgičević
Ramiza Ahmetović
Danijela Barić
Nikolina Maček Hrvat
Zrinka Kovarik
Irena Škorić
author_facet Tena Čadež
Ana Grgičević
Ramiza Ahmetović
Danijela Barić
Nikolina Maček Hrvat
Zrinka Kovarik
Irena Škorić
author_sort Tena Čadež
collection DOAJ
description A library of amine, oxime, ether, epoxy and acyl derivatives of the benzobicyclo[3.2.1]octene were synthesized and evaluated as inhibitors of both human acetylcholinesterase (AChE) and butyrylcholinesterase (BChE). The majority of the tested compounds exhibited higher selectivity for BChE. Structural adjustment for AChE seems to have been achieved by acylation, and the furan ring opening of furo-benzobicyclo[3.2.1]octadiene results for compound <b>51</b> with the highest AChE affinity (IC<sub>50</sub> = 8.3 µM). Interestingly, its analogue, an oxime ether with a benzobicyclo[3.2.1]-skeleton, compound <b>32</b> was one of the most potent BChE inhibitors in this study (IC<sub>50</sub> = 31 µM), but not as potent as <i>endo-</i><b>43</b>, an ether derivative of the benzobicyclo[3.2.1]octene with an additional phenyl substituent (IC<sub>50</sub> = 17 µM). Therefore, we identified several cholinesterase inhibitors with a potential for further development as potential drugs for the treatment of neurodegenerative diseases.
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spelling doaj.art-a0512826e8954e59a659d69e27e9d66c2023-11-20T18:04:04ZengMDPI AGMolecules1420-30492020-10-012521487210.3390/molecules25214872Benzobicyclo[3.2.1]octene Derivatives as a New Class of Cholinesterase InhibitorsTena Čadež0Ana Grgičević1Ramiza Ahmetović2Danijela Barić3Nikolina Maček Hrvat4Zrinka Kovarik5Irena Škorić6Institute for Medical Research and Occupational Health, Ksaverska Cesta 2, 10000 Zagreb, CroatiaDepartment of Organic Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 19, 10000 Zagreb, CroatiaDepartment of Organic Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 19, 10000 Zagreb, CroatiaDivision of Physical Chemistry, Rudjer Bošković Institute, Bijenička Cesta 54, 10000 Zagreb, CroatiaInstitute for Medical Research and Occupational Health, Ksaverska Cesta 2, 10000 Zagreb, CroatiaInstitute for Medical Research and Occupational Health, Ksaverska Cesta 2, 10000 Zagreb, CroatiaDepartment of Organic Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 19, 10000 Zagreb, CroatiaA library of amine, oxime, ether, epoxy and acyl derivatives of the benzobicyclo[3.2.1]octene were synthesized and evaluated as inhibitors of both human acetylcholinesterase (AChE) and butyrylcholinesterase (BChE). The majority of the tested compounds exhibited higher selectivity for BChE. Structural adjustment for AChE seems to have been achieved by acylation, and the furan ring opening of furo-benzobicyclo[3.2.1]octadiene results for compound <b>51</b> with the highest AChE affinity (IC<sub>50</sub> = 8.3 µM). Interestingly, its analogue, an oxime ether with a benzobicyclo[3.2.1]-skeleton, compound <b>32</b> was one of the most potent BChE inhibitors in this study (IC<sub>50</sub> = 31 µM), but not as potent as <i>endo-</i><b>43</b>, an ether derivative of the benzobicyclo[3.2.1]octene with an additional phenyl substituent (IC<sub>50</sub> = 17 µM). Therefore, we identified several cholinesterase inhibitors with a potential for further development as potential drugs for the treatment of neurodegenerative diseases.https://www.mdpi.com/1420-3049/25/21/4872acylationbenzobicyclo[3.2.1]octane/octenebenzylaminescholinesteraseepoxidationoximes
spellingShingle Tena Čadež
Ana Grgičević
Ramiza Ahmetović
Danijela Barić
Nikolina Maček Hrvat
Zrinka Kovarik
Irena Škorić
Benzobicyclo[3.2.1]octene Derivatives as a New Class of Cholinesterase Inhibitors
Molecules
acylation
benzobicyclo[3.2.1]octane/octene
benzylamines
cholinesterase
epoxidation
oximes
title Benzobicyclo[3.2.1]octene Derivatives as a New Class of Cholinesterase Inhibitors
title_full Benzobicyclo[3.2.1]octene Derivatives as a New Class of Cholinesterase Inhibitors
title_fullStr Benzobicyclo[3.2.1]octene Derivatives as a New Class of Cholinesterase Inhibitors
title_full_unstemmed Benzobicyclo[3.2.1]octene Derivatives as a New Class of Cholinesterase Inhibitors
title_short Benzobicyclo[3.2.1]octene Derivatives as a New Class of Cholinesterase Inhibitors
title_sort benzobicyclo 3 2 1 octene derivatives as a new class of cholinesterase inhibitors
topic acylation
benzobicyclo[3.2.1]octane/octene
benzylamines
cholinesterase
epoxidation
oximes
url https://www.mdpi.com/1420-3049/25/21/4872
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