title: Rapid access to ketones related to oleanolic and ursolic acids.
abstract: We describe in this article a process with which to obtain different ketones related to oleanolic and ursolic acids from a natural source, Salvia canariensis L., with minimal use of chromatography columns. Amongst the isolated compounds was 12α-bromo-3-oxo-olean-13, 28-olide (3), which was fully characterised, including a characterisation of its molecular configuration by X-ray crystallographic analysis by 1 and 2-dimensional NMR techniques.
authors.affiliation: Facultad de Química, Universidad Autónoma de Yucatán, Calle 41 No 421, Col. Industrial, C.P. 97150, Mérida, Yucatán, México.
authors.forename: Braulio E
authors.initials: BE
authors.lastname: Rivero-Chan
authors.forename: Joaquín G
authors.initials: JG
authors.lastname: Marrero
authors.forename: Simón
authors.initials: S
authors.lastname: Hernández-Ortega
authors.forename: Gonzalo J
authors.initials: GJ
authors.lastname: Mena-Rejón
authors.forename: Luis D
authors.initials: LD
authors.lastname: Miranda
mesh_terms: D018360:Crystallography, X-Ray; D007659:Ketones / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D008968:Molecular Conformation; D009828:Oleanolic Acid / Q000031:analogs & derivatives* / Q000737:chemistry* / Q000302:isolation & purification; D010084:Oxidation-Reduction; D027544:Salvia / Q000737:chemistry; D014315:Triterpenes / Q000737:chemistry*; D000097245:Ursolic Acid
chemical_list: D007659:Ketones; D009828:Oleanolic Acid; D014315:Triterpenes; D000097245:Ursolic Acid; C573165:12alpha-bromo-3-oxo-olean-13,28-olide