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Acetylated Furostene Glycosides from Solanum gilo Fruits.

Authors
  • Tchoupang, Edwige Nana1
  • Reder, Christina2
  • Ateba, Sylvin Benjamin1
  • Zehl, Martin2, 3
  • Kählig, Hanspeter4
  • Njamen, Dieudonné1
  • Höller, Franziska2
  • Glasl-Tazreiter, Sabine2
  • Krenn, Liselotte2
  • 1 Laboratory of Animal Physiology, Department of Animal Biology and Physiology, Faculty of Science, University of Yaounde 1, Yaounde, Cameroon. , (Cameroon)
  • 2 Department of Pharmacognosy, University of Vienna, Vienna, Austria. , (Austria)
  • 3 Department of Analytical Chemistry, University of Vienna, Vienna, Austria. , (Austria)
  • 4 Institute of Organic Chemistry, University of Vienna, Vienna, Austria. , (Austria)
Type
Published Article
Journal
Planta Medica
Publisher
Georg Thieme Verlag KG
Publication Date
Oct 01, 2017
Volume
83
Issue
14-15
Pages
1227–1232
Identifiers
DOI: 10.1055/s-0043-116491
PMID: 28719925
Source
Medline
License
Unknown

Abstract

In continuation of our work on a traditional mixture of spices called "Nkui", used in Cameroon for its influence on women's reproductive health, we investigated the chemical composition of Solanum gilo, one component of "Nkui". A methanolic extract was studied in detail. After dereplication of several known compounds, two furo-5-stene-derived saponin glycosides with acetylated sugar moieties were isolated. By extensive 1- and 2D NMR experiments and HR-MS and GC-MS methods, the structures were elucidated as 26-[(3‴,4‴,6‴-tri-O-acetyl)-β-D-glucopyranosyloxy]-22-hydroxyfurost-5-en-3β-yl-O-α-L-rhamnopyranosyl-(1″→2')-β-D-glucopyranoside (A) and 26-[(3‴,4‴,6‴-tri-O-acetyl)-β-D-glucopyranosyloxy]-22-hydroxyfurost-5-en-3β-yl-[O-α-L-rhamnopyranosyl-(1''''→4')-O-α-L-rhamnopyranosyl-(1″→2')]-β-D-glucopyranoside (B), both new natural compounds.

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