title: Neocandenatone, an isoflavan-cinnamylphenol quinone methide pigment from Dalbergia congestiflora.
abstract: A purple pigment neocandenatone (vestitol[6-->9";7O-->7"]obtusaquinone) was isolated from the heartwood of campincerán (Dalbergia congestiflora), an endemic Mexican tree. The isoflavan-cinnamyl phenol quinone methide structure of this compound was elucidated by HRMS, IR, and 1H and 13C NMR spectroscopic analysis, including 2D experiments (COSY, NOESY, HMQC and HSQC).
authors.affiliation: Departamento de Química. Escuela Nacional de Ciencias Biológicas del IPN. Prolongación de Carpio y Plan de Ayala, 11340 D. F, Mexico.
authors.forename: Blanca E
authors.initials: BE
authors.lastname: Barragán-Huerta
authors.forename: Javier
authors.initials: J
authors.lastname: Peralta-Cruz
authors.forename: Rubén F
authors.initials: RF
authors.lastname: González-Laredo
authors.forename: Joe
authors.initials: J
authors.lastname: Karchesy
mesh_terms: D035782:Dalbergia / Q000737:chemistry*; D045563:Indolequinones / Q000737:chemistry* / Q000302:isolation & purification; D007529:Isoflavones / Q000737:chemistry* / Q000302:isolation & purification; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D010636:Phenols / Q000737:chemistry* / Q000302:isolation & purification; D010860:Pigments, Biological / Q000737:chemistry* / Q000302:isolation & purification
chemical_list: D045563:Indolequinones; D007529:Isoflavones; D010636:Phenols; D010860:Pigments, Biological; C068040:quinone methide