New cycloartane and flavonol glycosides from Corchorus depressus

Muhammad Zahid, Akbar Ali, Omar Ishurd, Amir Ahmed, Zulfiqar Ali, Viqar Uddin Ahmad, Yuanjiang Pan

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

Two new monodesmosidic cycloartane triterpene glycosides, depressosides E and F, and two new flavonol glycosides, depressonol A and B, were isolated from the butanol-soluble part of the EtOH extract of Corchorus depressus L. The structures of the new compounds were elucidated as (22R,24S)-22,25-epoxy-9, 19-cyclolanostane-3β,16β,24-triol 3-[a-L-rhamnopyranosyl-(1→4)-β-D-glucopyranoside] (1), (22R,24S)-22, 25-epoxy9,19-cyclolanostane-3β,16β,24-triol 3-[α-D-glucopyranosyl-(1→3)-β-D-glucopyranoside] (2), kaempferol 3-[β-D-glucopyranosyl-(1→4)-β-D-galactopyranoside] 7-[a-L-arabinofuranoside] (4), and kaempferol 3-[β-D-glucopyranosyl-(1→6)-β-D-galactopyranoside] 7-[α-L-arabinofuranoside] (5) on the basis of chemical evidence and detailed spectroscopic studies.

Original languageEnglish (US)
Pages (from-to)689-697
Number of pages9
JournalHelvetica Chimica Acta
Volume85
Issue number2
DOIs
StatePublished - 2002
Externally publishedYes

ASJC Scopus subject areas

  • Catalysis
  • Biochemistry
  • Drug Discovery
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry

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