title: Triterpenoid saponins from Herniaria fontanesii.
abstract: Two new saponins have been isolated from the aerial parts of Herniaria fontanesii. Their structures were established as 28-O-[alpha-L-rhamnopyranosyl-(1-->2-[(alpha-L- rhamnopyranosyl)-(1-->3)-]-(beta-D-4-acetoxyfucopyranosyl] ester of 3-O-[alpha-L-rhamnopyranosyl-(1-->2)-beta-D-glucopyranosyl uronic]-2 beta-3 beta-16-alpha-trihydroxy-olean-12-ene-23, 28-dioic acid and 28-omicron-[alpha-L-rhamnopyranosyl-(1-->2-[alpha-L-rhamnopyranosyl (1-->3)]-(beta-D-fucopyranosyl] ester of 3-omicron-[alpha-L-rhamnopyranosyl-(1-->2)-beta-D-glucopyranosyl uronic]-2 beta-3 beta-16-alpha-trihydroxy-olean-12-ene-23, 28 dioic acid.
authors.affiliation: Laboratoire de Chimie des Plantes et de Synthese Organique et Bioorganique, Faculté des Sciences, B.P., Rabat, Morocco.
authors.forename: A N
authors.initials: AN
authors.lastname: M'Bark
authors.forename: D
authors.initials: D
authors.lastname: Guillaume
authors.forename: O
authors.initials: O
authors.lastname: Kol
authors.forename: Z
authors.initials: Z
authors.lastname: Charrouf
mesh_terms: D002240:Carbohydrate Sequence; D009682:Magnetic Resonance Spectroscopy; D008969:Molecular Sequence Data; D009828:Oleanolic Acid / Q000031:analogs & derivatives*; D010946:Plants, Medicinal / Q000737:chemistry*; D012503:Saponins / Q000737:chemistry / Q000302:isolation & purification*; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: C103664:3-O-(rhamnopyranosyl(1-2)-glucopyranosyluronic)-2,3,16-trihydroxy-olean-12-ene-23,28-dioic acid 28-O-(rhamnopyranosyl(1-2)-(rhamnopyranosyl(1-3))-4-acetoxyfucopyranosyl) ester; C103665:3-O-(rhamnopyranosyl(1-2)glucopyranosyluronic)-2,3,16-trihydroxy-olean-12-ene-23,28-dioic acid 28-O-(rhamnopyranosyl(1-2)-(rhamnopyranosyl(1-3))-fucopyranosyl) ester; D012503:Saponins; D014315:Triterpenes; D009828:Oleanolic Acid