Chemical constituents from solenostemma argel and their cholinesterase inhibitory activity


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Demmak R. G. , Bordage S., Bensegueni A., Boutaghane N., Hennebelle T., Mokrani E. H. , ...More

Natural Product Sciences, vol.25, no.2, pp.115-121, 2019 (Refereed Journals of Other Institutions) identifier

  • Publication Type: Article / Article
  • Volume: 25 Issue: 2
  • Publication Date: 2019
  • Doi Number: 10.20307/nps.2019.25.2.115
  • Title of Journal : Natural Product Sciences
  • Page Numbers: pp.115-121
  • Keywords: Alzheimer’s disease, Cholinesterase, Molecular docking, Solenostemma argel

Abstract

© 2019, Korean Society of Pharmacognosy. All rights reserved.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-glu-copyranosyl(1→6)rhamnopyranose (3) p-hydroxybenzoic acid (4), dehydrovomifoliol (5), 14,15-dihydroxy-pregn-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.