Caffeoyl sugar esters and an ellagitannin from Rubus sanctus

Phytochemistry. 2003 Aug;63(8):905-11. doi: 10.1016/s0031-9422(03)00331-5.

Abstract

The new natural caffeoyl esters, 3,6-di-O-caffeoyl-(alpha/beta)-glucose and 1-O-caffeoyl-beta-xylose, together with the hitherto unknown natural tannin, 2,3-O-hexahydroxydiphenoyl-4,6-O-sanguisorboyl-(alpha/beta)-glucose, have been isolated from the aqueous alcohol aerial part extract of Rubus sanctus. Establishment of all structures was based on the chemical and spectral evidence, including ESI-MS and 2D NMR.

MeSH terms

  • Caffeic Acids / chemistry*
  • Carbohydrate Conformation
  • Esters / chemistry*
  • Esters / isolation & purification
  • Glucose / analogs & derivatives
  • Hydrolyzable Tannins*
  • Molecular Structure
  • Nuclear Magnetic Resonance, Biomolecular
  • Plants, Medicinal / chemistry
  • Rosaceae / chemistry*
  • Spectrophotometry, Ultraviolet
  • Tannins / chemistry*
  • Tannins / isolation & purification
  • Xylose / analogs & derivatives

Substances

  • Caffeic Acids
  • Esters
  • Hydrolyzable Tannins
  • Tannins
  • ellagitannin
  • Xylose
  • Glucose