title: Steroids from Harrisonia abyssinica.
abstract: In addition to the known sterols and ketosteroids beta-sitosterol (24 alpha-ethylcholest-5-en-3 beta-ol), stigmasterol (24 alpha-ethylcholesta-5,22-dien-3 beta-ol), campesterol (24 alpha-methylcholest-5-en-3 beta-ol), beta-sitostenone (stigmast-4-en-3-one, 24 alpha-ethylcholest-4-en-3-one), stigmastenone (stigmasta-4,22-dien-3-one, 24 alpha-ethylcholesta-4,22-dien-3-one), campestenone (24 alpha-methylcholest-4-en-3-one), and stigmasta-3,5-dien-7-one (24 alpha-ethylcholesta-3,5-dien-7-one), the new steroids stigmasta-3,5,22-trien-7-one (24 alpha-ethylcholesta-3,5,22-trien-7-one), and campesta-3,5-dien-7-one (24 alpha-methylcholesta-3,5-dien-7-one) were isolated from the stem bark of Harrisonia abyssinica and identified by NMR and mass spectrometry.
authors.affiliation: Faculté de Médecine-Pharmacie-Odontologie, Université de Conakry, Guinée.
authors.forename: A M
authors.initials: AM
authors.lastname: Baldé
authors.forename: S
authors.initials: S
authors.lastname: Apers
authors.forename: T E
authors.initials: TE
authors.lastname: De Bruyne
authors.forename: H
authors.initials: H
authors.lastname: Van den Heuvel
authors.forename: M
authors.initials: M
authors.lastname: Claeys
authors.forename: A J
authors.initials: AJ
authors.lastname: Vlietinck
authors.forename: L A
authors.initials: LA
authors.lastname: Pieters
mesh_terms: D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D015394:Molecular Structure; D010946:Plants, Medicinal / Q000737:chemistry*; D013256:Steroids / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D013256:Steroids