title: Triterpenoid saponins from Bongardia chrysogonum.
abstract: Two new triterpenoid saponins, 3-O-[beta-D-glucopyranosyl-(1-->4)-beta-D-glucopyranosyl-(1-->4)-alph a-L-arabinopyranosyl]-hederagenin (1) and 3-O-[beta-D-glucopyranosyl-(1-->4)-beta-D-glucopyranosyl-(1-->4)-alph a-L-arabinopyranosyl]-hederagenin 28-O-[beta-L-glucopyranosyl-(1-->6)-beta-L-glucopyranosyl] ester (2), together with five known saponins, were isolated from an ethanolic extract of the tubers of Bongardia chrysogonum. The structures of 1 and 2 were determined on the basis of spectroscopic studies.
authors.affiliation: International Center of Chemical Sciences, H. E. J. Research Institute of Chemistry, University of Karachi, Karachi-75270, Pakistan. hej@digicom.net.pk
authors.forename: A
authors.initials: A
authors.lastname: Rahman
authors.forename: D
authors.initials: D
authors.lastname: Shahwar
authors.forename: M I
authors.initials: MI
authors.lastname: Choudhary
authors.forename: B
authors.initials: B
authors.lastname: Sener
authors.forename: G
authors.initials: G
authors.lastname: Toker
authors.forename: K H
authors.initials: KH
authors.lastname: Baser
mesh_terms: D002851:Chromatography, High Pressure Liquid; D006868:Hydrolysis; D009682:Magnetic Resonance Spectroscopy; D010936:Plant Extracts / Q000737:chemistry; D018517:Plant Roots / Q000737:chemistry*; D010946:Plants, Medicinal / Q000737:chemistry*; D012503:Saponins / Q000737:chemistry*; D016339:Spectrometry, Mass, Fast Atom Bombardment; D014315:Triterpenes / Q000737:chemistry*; D014421:Turkey
chemical_list: D010936:Plant Extracts; D012503:Saponins; D014315:Triterpenes