New lignans from the roots of Schisandra sphenanthera

Fitoterapia. 2015 Jun:103:63-70. doi: 10.1016/j.fitote.2015.03.015. Epub 2015 Mar 19.

Abstract

Nine new lignans (1-8, 13) and five known ones (9-12, 14) have been isolated from the roots of Schisandra sphenanthera and were tested for their capacity to scavenge 2,2-diphenyl-1-Picryl-hydrazyl (DPPH). Of these lignans tested, compounds 1, 7, 8 and 13 exhibited noteworthy antioxidant activity with IC50 values of 92, 115, 35 and 48 μg/mL, respectively. The anti-oxidative haemolysis of human red blood cells (RBCs) activity of the most active compound 8, which is similar to that of vitamin C, was evaluated.

Keywords: Antioxidant activity; Lignans; RBCs; Schisandra sphenanthera.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Erythrocytes / drug effects*
  • Free Radical Scavengers / chemistry
  • Hemolysis
  • Humans
  • Inhibitory Concentration 50
  • Lignans / chemistry*
  • Lignans / isolation & purification
  • Molecular Structure
  • Plant Roots / chemistry*
  • Schisandra / chemistry*

Substances

  • Free Radical Scavengers
  • Lignans