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Inhibitory Evaluation of Sulfonamide Chalcones on β-Secretase and Acylcholinesterase
- Source :
- Molecules; Volume 18; Issue 1; Pages: 140-153
- Publication Year :
- 2012
- Publisher :
- Multidisciplinary Digital Publishing Institute, 2012.
-
Abstract
- The action of β-secretase (BACE1) is strongly correlated with the onset of Alzheimer’s disease (AD). Aminochalcone derivatives were examined for their ability to inhibit BACE1. Parent aminochalcones showed two digit micromolar IC50s against BACE1. Potency was enhanced 10-fold or more by introducing benzenesulfonyl derivatives to the amino group: 1 (IC50 = 48.2 μM) versus 4a (IC50 = 1.44 μM) and 2 (IC50 = 17.7 μM) versus 5a (IC50 = 0.21 μM). The activity was significantly influenced by position and number of hydroxyl groups on the chalcone B-ring: 3,4-dihydroxy 5a (IC50 = 0.21 μM) > 4-hydroxy 4a (IC50 = 1.44 μM) > 2,4-dihydroxy 6 (IC50 = 3.60 μM) > 2,5-dihydroxy 7 (IC50 = 16.87 μM) > des hydroxy 4b (IC50 = 168.7 μM). Lineweaver-Burk and Dixon plots and their secondary replots indicate that compound 5a was a mixed inhibitor with reversible and time-dependent behavior. Potent BACE1 inhibitors 4a,c,f, 5a–c showed moderate inhibition against two other enzymes implicated in AD pathogenesis, acetylcholinesterase (AChE) and butyrylcholinesterase (BChE), with IC50s ranging between 56.1 ~ 95.8 μM and 19.5 ~ 79.0 μM, respectively.
- Subjects :
- chemistry.chemical_classification
Chalcone
Stereochemistry
Organic Chemistry
sulfonamide chalcone
Alzheimer’s disease (AD)
β-secretase
acetylcholinesterase (AChE)
butyrylcholinesterase (BChE)
mixed inhibition
Pharmaceutical Science
Mixed inhibition
Acetylcholinesterase
Analytical Chemistry
Sulfonamide
chemistry.chemical_compound
Enzyme
chemistry
Chemistry (miscellaneous)
Drug Discovery
Molecular Medicine
Potency
Physical and Theoretical Chemistry
IC50
Butyrylcholinesterase
Subjects
Details
- Language :
- English
- ISSN :
- 14203049
- Database :
- OpenAIRE
- Journal :
- Molecules; Volume 18; Issue 1; Pages: 140-153
- Accession number :
- edsair.doi.dedup.....fb28fc1f7c8c4460ec0d853125478f89
- Full Text :
- https://doi.org/10.3390/molecules18010140