title: Contents of 1,4-benzoxazin-3-ones and 2-benzoxazolinone from Stenandrium dulce (Nees).
abstract: Secondary metabolites, DIBOA, HBOA, 7-OH-HBOA and BOA, were isolated and quantified from S. dulce (Nees), a native species in Chile belonging to the Acanthaceae family. The highest DIBOA and HBOA contents were determined in leaves (9.25 mmol kg(-1) fr. wt) and root (6.81 mmol kg(-1) fr. wt), respectively. Aglycones, 7-OH-HBOA and HBOA, were isolated together from root extracts of Acanthaceae species. Both, HBOA and 7-OH-HBOA should be direct precursors in the biosynthesis of DIBOA and DIMBOA, respectively.
authors.affiliation: Departamento de Química, Facultad de Ciencias, Universidad de Chile, Casilla 653, Santiago, Chile.
authors.forename: Hector R
authors.initials: HR
authors.lastname: Bravo
authors.forename: Sylvia V
authors.initials: SV
authors.lastname: Copaja
authors.forename: José
authors.initials: J
authors.lastname: San Martín
mesh_terms: D027901:Acanthaceae / Q000737:chemistry*; D001583:Benzoxazoles / Q000737:chemistry* / Q000302:isolation & purification; D002851:Chromatography, High Pressure Liquid; D013058:Mass Spectrometry; D008958:Models, Molecular; D015394:Molecular Structure; D010078:Oxazines / Q000737:chemistry* / Q000302:isolation & purification; D018515:Plant Leaves / Q000737:chemistry; D018517:Plant Roots / Q000737:chemistry
chemical_list: D001583:Benzoxazoles; D010078:Oxazines