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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 34, Number 11
BKCSDE 34(11)
November 20, 2013

Title	Development of Cholinesterase Inhibitors Using (a)-Lipoic Acid-benzyl Piperazine Hybrid Molecules
Author	Beom-cheol Kim, Seung-hwan Lee, Mi Jang, MinYoung Shon, Jeong Ho Park
Keywords	Molecular hybridization, (α)-Lipoic acid, Benzyl piperazines, Butyrylcholinesterase inhibitor
Abstract	A series of hybrid molecules between (α)-lipoic acid (ALA) and benzyl piperazines were synthesized and their in vitro cholinesterase [acetylcholinesterase (AChE) and butyrylcholinesterase (BuChE)] inhibitory activities were evaluated. Even though the parent compounds did not show any inhibitory activity against cholinesterase (ChE), all hybrid molecules showed BuChE inhibitory activity. Some hybrid compounds also displayed AChE inhibitory activity. Specifically, ALA-1-(3-methylbenzyl)piperazine (15) was shown to be an effective inhibitor of both BuChE (IC50 = 2.3 ± 0.7 μM) and AChE (IC50 = 30.31 ± 0.64 μM). An inhibition kinetic study using compound 15 indicated a mixed inhibition type. Its binding affinity (Ki) value to BuChE is 2.91 ± 0.15 μM.
Page	3322 - 3326
Full Text	PDF

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