title: The unambiguous detection of kaurenic derivatives in aqueous infusions of Montanoa tomentosa by GC-MS and 2D-NMR spectroscopy: an answer to contradictory reports.
abstract: The qualitative analytical detection of kaurenic compounds kauradienoic (kauradien-9(11),16-dienoic acid) (1), monoginoic (2), and kaurenoic acids (3) in the infusion of Montanoa tomentosa Cerv., was carried out using GC-MS and 2D-NMR methods to resolve contradictory HPLC results from previous reports.
authors.affiliation: Instituto de Química, UNAM, Cd. Universitaria, México, DF 04510.
authors.forename: R G
authors.initials: RG
authors.lastname: Enríquez
authors.forename: E
authors.initials: E
authors.lastname: Miranda
authors.forename: B
authors.initials: B
authors.lastname: Ortiz
authors.forename: I
authors.initials: I
authors.lastname: León
authors.forename: G
authors.initials: G
authors.lastname: Magos
authors.forename: A
authors.initials: A
authors.lastname: Peña
authors.forename: W F
authors.initials: WF
authors.lastname: Reynolds
authors.forename: D
authors.initials: D
authors.lastname: Gnecco