A New Bidesmosidic Triterpenoidal Saponin from the Roots of Symphytum officinale

Viqar Uddin Ahmad; Faryal Vali Mohammad; Mushtaq Noorwala; Bilge Sener

doi:10.1055/s-2006-959733

Planta Medica, Inhaltsverzeichnis

Planta Med 1993; 59(5): 461-464
DOI: 10.1055/s-2006-959733

Paper

A New Bidesmosidic Triterpenoidal Saponin from the Roots of Symphytum officinale

Viqar Uddin Ahmad¹ , Faryal Vali Mohammad¹ , Mushtaq Noorwala¹ , Bilge Sener²

¹H. E. J. Research Institute of Chemistry, University of Karachi, Karachi-75270, Pakistan
²Department of Pharmacognosy, Faculty of Pharmacy, Gazi University, Ankara, Turkey

Abstract

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Abstract

A new triterpenoidal saponin having hederagenin as the aglycone was isolated from the roots of Symphytum officinale L. The structure of this saponin was elucidated by FAB-MS, ¹H-, ¹³C-NMR, 2D-NMR analyses and chemical studies as 3-O-[β-D-glucopyranosyl-(1→4)-α-L-arabinopyranosyl]-hederagenin 28-O-[β-D-glucopyranosyl-(1→6)-β-D-glucopyranosyl] ester.

Key words

Symphytum offlcinale - Boraginaceae - triterpenoid saponin - hederagenin - structural elucidation - 2D-NMR

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