title: Oleanane saponins from Stylosanthes erecta.
abstract: Five new oleanane saponins (1-5) together with four know flavonol glycosides were isolated from the aerial parts of Stylosanthes erecta. Their structures were elucidated by 1D and 2D NMR experiments including 1D-TOCSY, DQF-COSY, ROESY, HSQC, and HMBC spectroscopy, as well as ESIMS analysis. The aglycone moieties of 1-4 were assigned as new oleanane derivatives.
authors.affiliation: Dipartimento di Chimica Bioorganica e Biofarmacia, Università di Pisa, Via Bonanno 33, 56126 Pisa, Italy.
authors.forename: Marinella
authors.initials: M
authors.lastname: De Leo
authors.forename: Rokia
authors.initials: R
authors.lastname: Sanogo
authors.forename: Nunziatina
authors.initials: N
authors.lastname: De Tommasi
authors.forename: Alessandra
authors.initials: A
authors.lastname: Braca
mesh_terms: D007887:Fabaceae / Q000737:chemistry*; D008302:Mali; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D009828:Oleanolic Acid / Q000031:analogs & derivatives* / Q000737:chemistry / Q000302:isolation & purification; D010946:Plants, Medicinal / Q000737:chemistry*; D012503:Saponins / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D012503:Saponins; C413246:oleanane; D009828:Oleanolic Acid