Two new dihydrobenzofuran lignans from Rabdosia lophanthoides (Buch.-Ham.ex D.Don) Hara

J Asian Nat Prod Res. 2010 Jul;12(7):557-61. doi: 10.1080/10286020.2010.484805.

Abstract

Two new dihydrobenzofuran lignanosides, (7R,8S)-4,3',9'-trihydroxyl-3-methoxyl-7,8-dihydrobenzofuran-1'-propylneolignan-9-O-(6-O-syringoyl)-beta-D-glucopyranoside, named lophanthoside B (1) and (7R,8S)-4,9,9'-trihydroxyl-3-methoxyl-7,8-dihydrobenzofuran-1'-propylneolignan-3'-O-beta-D-glucopyranoside (2), an enantiomer of umbroside, along with four known dihydrobenzofuran lignans (3-6), were isolated from 50% acetone extract of Rabdosia lophanthoides (Buch.-Ham.ex D.Don) Hara. Their structures were elucidated by NMR and MS experiments.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Benzofurans / chemistry
  • Benzofurans / isolation & purification*
  • Drugs, Chinese Herbal / chemistry
  • Glycosides / chemistry
  • Glycosides / isolation & purification*
  • Isodon / chemistry*
  • Lignans / chemistry
  • Lignans / isolation & purification*
  • Molecular Structure
  • Nuclear Magnetic Resonance, Biomolecular
  • Stereoisomerism

Substances

  • (7R,8S)-4,9,9'-trihydroxyl-3-methoxyl-7,8-dihydrobenzofuran-1'-propylneolignan-3'-O-beta-D-glucopyranoside
  • Benzofurans
  • Drugs, Chinese Herbal
  • Glycosides
  • Lignans
  • lophanthoside B