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KMID : 0620720190250020115
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Natural Product Sciences
2019 Volume.25 No. 2 p.115 ~ p.121
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Chemical Constituents from Solenostemma argel and their Cholinesterase Inhibitory Activity
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Demmak Rym Gouta
Bordage Simon
Bensegueni Abederrahmane
Boutaghane Naima
Hennebelle Thierry
El Hassen Mokrani
Sahpaz Sevser
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Abstract
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Alzheimer’s disease is a chronic neurodegenerative disorder with no curative treatment. The commercially available drugs, which target acetylcholinesterase, are not satisfactory. The aim of this study was to investigate the cholinesterase inhibitory activity of Solenostemma argel aerial part. Eight compounds were isolated and identified by NMR: kaempferol-3-O-glucopyranoside (1), kaempferol (2), kaempferol-3-glucopyranosyl( 1→6)rhamnopyranose (3) p-hydroxybenzoic acid (4), dehydrovomifoliol (5), 14,15-dihydroxypregn- 4-ene-3,20-dione (6), 14,15-dihydroxy-pregn-4-ene-3,20-dione-15β-D-glucopyranoside (7) and solargin I (8). Two of them (compounds 2 and 3) could inhibit over 50 % of butyrylcholinesterase activity at 100 μM. Compound (2) displayed the highest inhibitory effect against acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) with a slight selectivity towards the latter. Molecular docking studies supported the in vitro results and revealed that (2) had made several hydrogen and π-π stacking interactions which could explain the compound potency to inhibit AChE and BChE.
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KEYWORD
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Alzheimer’s disease, Cholinesterase, Molecular docking, Solenostemma argel
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