1,3-substituted imidazolidine-2,4,5-triones: synthesis and inhibition of cholinergic enzymes.
Molecules
; 16(9): 7565-82, 2011 Sep 05.
Article
em En
| MEDLINE
| ID: mdl-21894089
ABSTRACT
A series of novel and highly active acetylcholinesterase and butyrylcholinesterase inhibitors derived from substituted benzothiazoles containing an imidazolidine-2,4,5-trione moiety were synthesized and characterized. The molecular structure of 1-(2,6-diisopropyl-phenyl)-3-[(1R)-1-(6-fluoro-1,3-benzothiazol-2-yl)ethyl]-imidazolidine-2,4,5-trione (3g) was determined by single-crystal X-ray diffraction. Both optical isomers are present as two independent molecules in the triclinic crystal system. The lipophilicity of the compounds was determined as the partition coefficient log K(ow) using the traditional shake-flask method. The in vitro inhibitory activity on acetylcholinesterase from electric eel and butyrylcholinesterase isolated from equine serum was determined. The inhibitory activity on acetylcholinesterase was significantly higher than that of the standard drug rivastigmine. The discussed compounds are also promising inhibitors of butyrylcholinesterase, as some of the prepared compounds inhibit butyrylcholinesterase better than the internal standards rivastigmine and galanthamine. The highest inhibitory activity (IC50 = 1.66 µmol/L) corresponds to the compound 1-(4-isopropylphenyl)-3-[(R)-1-(6-fluorobenzo[d]thiazol-2-yl)ethyl]imidazolidine-2,4,5-trione (3d). For all the studied compounds, the relationships between the lipophilicity and the chemical structure as well as their structure-activity relationships are discussed.
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1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Acetilcolinesterase
/
Butirilcolinesterase
/
Inibidores da Colinesterase
/
Imidazolidinas
/
Benzotiazóis
Idioma:
En
Revista:
Molecules
Ano de publicação:
2011
Tipo de documento:
Article