title: Two novel flavanones from Greigia sphacelata.
abstract: As part of our continuing phytochemical investigations of plants from arid environments in Chile, the aerial parts of Greigia sphacelata were examined. Two novel flavanones, 5,7,3'-trihydroxy-6, 4',5'-trimethoxyflavanone (1) and 5,3'-dihydroxy-6,7,4', 5'-tetramethoxyflavanone (2), as well as eight known compounds-1, 3-O-di-trans-p-coumaroylglycerol (3), 1-O-trans-p-coumaroylglycerol (4), a mixture of 1-(omega-feruloyldocosanoyl)glycerol (5) and 1-(omega-feruloyltetracosanoyl)glycerol (6), trans-ferulic acid 22-hydroxydocosanoic acid ester (7), arborinone (8), arborinol (9), and isoarborinol (10)-were isolated.
authors.affiliation: Department of Pharmaceutical Sciences and Department of Pharmacology and Toxicology, Division of Medicinal Chemistry, College of Pharmacy, The University of Arizona, Tucson, Arizona 85721, USA.
authors.forename: M L
authors.initials: ML
authors.lastname: Flagg
authors.forename: G A
authors.initials: GA
authors.lastname: Wächter
authors.forename: A L
authors.initials: AL
authors.lastname: Davis
authors.forename: G
authors.initials: G
authors.lastname: Montenegro
authors.forename: B N
authors.initials: BN
authors.lastname: Timmermann
mesh_terms: D044950:Flavanones; D005419:Flavonoids / Q000737:chemistry / Q000302:isolation & purification*; D019684:Magnoliopsida / Q000737:chemistry*; D015394:Molecular Structure; D013057:Spectrum Analysis
chemical_list: C421082:5,3'-dihydroxy-6,7,4', 5'-tetramethoxyflavanone; C421083:5,7,3'-trihydroxy-6, 4',5'-trimethoxyflavanone; D044950:Flavanones; D005419:Flavonoids