title: Triterpenoid saponins from Isertia pittieri.
abstract: Two new 27-nor-triterpenoid saponins, pyrocincholic acid 3 beta-O-beta-D-quinovopyranosyl-28-[beta-D-glucopyranosyl(1-->6)-beta-D-glucopyranosyl] ester (1) and pyrocincholic acid 3 beta-O-beta-D-quinovopyranosyl(1-->6)-beta-D-glucopyranosyl-28-[beta-D-glucopyranosyl(1-->2)-beta-D-glucopyranosyl] ester (2) were isolated from the stem bark of Isertia pittieri, together with two known bidesmosidic quinovic acid glycosides. The structures of 1 and 2 were determined on the basis of spectroscopic studies.
authors.affiliation: Laboratoire de Pharmacognosie, Faculté de Pharmacie, CNRS UMR7081, Université Louis Pasteur Strasbourg, BP 24, 67401 Illkirch Cedex, France.
authors.forename: B H
authors.initials: BH
authors.lastname: Um
authors.forename: B
authors.initials: B
authors.lastname: Weniger
authors.forename: A
authors.initials: A
authors.lastname: Lobstein
authors.forename: T
authors.initials: T
authors.lastname: Pouplin
authors.forename: M
authors.initials: M
authors.lastname: Polat
authors.forename: R
authors.initials: R
authors.lastname: Aragón
authors.forename: R
authors.initials: R
authors.lastname: Anton
mesh_terms: D002851:Chromatography, High Pressure Liquid; D003105:Colombia; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D024301:Plant Bark / Q000737:chemistry; D018547:Plant Stems / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D019666:Rubiaceae / Q000737:chemistry*; D012503:Saponins / Q000737:chemistry / Q000302:isolation & purification*; D013055:Spectrophotometry, Infrared; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D012503:Saponins; D014315:Triterpenes; C446580:pyrocincholic acid 3-O-quinovopyranosyl(1-6)-glucopyranosyl-28-(glucopyranosyl(1-2)-glucopyranosyl) ester; C446579:pyrocincholic acid 3-O-quinovopyranosyl-28-(glucopyranosyl(1-6)-glucopyranosyl)ester