JOURNAL 421


Records of Natural Products
VOLUME & ISSUE
Year: 2011 Issue: 3 July-September
PAGES
p.238 - 241
STATISTICS
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AUTHORS
    Souheila Laggoune, Ignacio Brouard, Francisco Leon, Claude-Alain Calliste, Jean-luc Duroux, Jaime Bermejo, Zahia Kabouche and Ahmed Kabouche t
PDF OF ARTICLE

GRAPHICAL ABSTRACT


ABSTRACT


Two sterols, stigmasterol (1) and β-sitosterol (2), two lignans, (+)-sesamin (3), new for the genus Stachys and (±)-paulownia (4), new in the Lamiaceae family, reported for the second time from a natural source, and one acetylated flavone glycoside isoscutellarein-7-O-(2''-O-6'''-O-acetyl-β-D-allopyranosyl-β-D-glucopyranoside (5), were isolated from the roots of Stachys mialhesi de Noé. Surprisingly, 3g of compound 5 are gathered from 5g of roots extract. The structures of compounds 1-5 were established on the basis of physical and spectroscopic analysis, and by comparison with the literature data. The free-radical-scavenging property of compound 5 was evaluated by the use of the ESR method in order to visualize the inhibition of the 1,1-diphenyl-2-1picrylhydrazyl (DPPH) free radical.

KEYWORDS
  • Stachys mialhesi
  • Lamiaceae
  • lignans
  • free radical scavenging activity
  • ESR.

SUPPORTING INFORMATION


Supporting Information
Download File 30-RNP-1008-287-supporting.pdf (3.93 MB)