title: Structure elucidation of new acacic acid-type saponins from Albizia coriaria.
abstract: Three new acacic acid derivatives, named coriariosides C, D, and E (1-3) were isolated from the roots of Albizia coriaria. Their structures were elucidated on the basis of extensive 1D- and 2D-NMR studies and mass spectrometry as 3-O-[β-D-xylopyranosyl-(1 → 2)-β-D-fucopyranosyl-(1 → 6)-2-(acetamido)-2-deoxy-β-D-glucopyranosyl]-21-O-{(2E,6S)-6-O-{4-O-[(2E,6S)-2,6-dimethyl- 6-O-(β-D-quinovopyranosyl)octa-2,7-dienoyl]-4-O-[(2E,6S)-2,6-dimethyl-6-O-(β-D-quinovopyranosyl)octa-2,7-dienoyl]-β-D-quinovopyranosyl}-2,6-dimethylocta-2,7-dienoyl}acacic acid 28-O-β-D-xylopyranosyl-(1 → 4)-α-L-rhamnopyranosyl-(1 → 2)-β-D-glucopyranosyl ester (1), 3-O-{β-D-fucopyranosyl-(1 → 6)-[β-D-glucopyranosyl-(1 → 2)]-β-D-glucopyranosyl}-21-O-{(2E,6S)-6-O-{4-O-[(2E,6S)-2,6-dimethyl-6-O-(β-D-quinovopyranosyl)octa-2,7-dienoyl]-4-O-[(2E,6S)-2,6-dimethyl-6-O-(β-D-quinovopyranosyl)octa-2,7-dienoyl]-β-D-quinovopyranosyl}-2,6-dimethylocta-2,7-dienoyl}acacic acid 28-O-α-L-rhamno pyranosyl-(1 → 2)-β-D-glucopyranosyl ester (2), and 3-O-[β-D-fucopyranosyl-(1 → 6)-β-D-glucopyranosyl]-21-O-{(2E,6S)-6-O-{4-O-[(2E,6S)-2,6-dimethyl-6-O-(β-D-quinovopyranosyl)octa-2,7-dienoyl)-β-D-quinovopyranosyl]octa-2,7-dienoyl}acacic acid 28-O-β-D-glucopyranosyl ester (3).
authors.forename: Olivier Placide
authors.initials: OP
authors.lastname: Noté
authors.forename: Anne-Claire
authors.initials: AC
authors.lastname: Mitaine-Offer
authors.forename: Tomofumi
authors.initials: T
authors.lastname: Miyamoto
authors.forename: Philippe
authors.initials: P
authors.lastname: Chabert
authors.forename: Dieudonné Emmanuel
authors.initials: DE
authors.lastname: Pegnyemb
authors.forename: Bernard
authors.initials: B
authors.lastname: Weniger
authors.forename: Marie-Aleth
authors.initials: MA
authors.lastname: Lacaille-Dubois
authors.forename: Annelise
authors.initials: A
authors.lastname: Lobstein
mesh_terms: D000045:Acacia / Q000737:chemistry; D031289:Albizzia / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D018517:Plant Roots / Q000737:chemistry*; D012503:Saponins / Q000737:chemistry*
chemical_list: D012503:Saponins