title: Triterpenoid saponins from Ilex paraguariensis.
abstract: The leaves of Ilex paraguariensis have yielded three new saponins named matesaponins 2, 3, and 4 [1-3], which have been characterized by chemical and nmr methods as ursolic acid 3-O-[beta-D-glucopyranosyl-(1-->3)-[alpha-L-rhamnopyranosyl- (1-->2)]]-alpha-L-arabinopyranosyl]-(28-->1)-beta-D-glucopyranosyl ester, ursolic acid 3-O-[beta-D-glucopyranosyl-(1-->3)-alpha-L-arabinopyranosyl]-(28-- >1)- [beta-D-glucopyranosyl-(1-->6)-beta-D-glucopyranosyl]ester, and ursolic acid 3-O-[beta-D-glucopyranosyl-(1-->3)-[alpha-L- rhamnopyranosyl-(1-->2)]]-alpha-L-arabinopyranosyl]-(28-->1)-[beta -D- glucopyranosyl-(1-->6)-beta-D-glucopyranosyl]ester, respectively.
authors.affiliation: Laboratoire de Chimie Thérapeutique, URA 1310 du CNRS, Faculté des Sciences Pharmaceutiques et Biologiques, Paris, France.
authors.forename: G
authors.initials: G
authors.lastname: Gosmann
authors.forename: D
authors.initials: D
authors.lastname: Guillaume
authors.forename: A T
authors.initials: AT
authors.lastname: Taketa
authors.forename: E P
authors.initials: EP
authors.lastname: Schenkel
mesh_terms: D000107:Acetylation; D002240:Carbohydrate Sequence; D006868:Hydrolysis; D009682:Magnetic Resonance Spectroscopy; D008969:Molecular Sequence Data; D018515:Plant Leaves / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D012503:Saponins / Q000138:chemical synthesis* / Q000302:isolation & purification* / Q000494:pharmacology; D013020:South America; D016339:Spectrometry, Mass, Fast Atom Bombardment; D014315:Triterpenes / Q000302:isolation & purification*
chemical_list: D012503:Saponins; D014315:Triterpenes; C093867:matesaponin 2; C093868:matesaponin 3; C093869:matesaponin 4