title: Phytochemical investigation of Turnera diffusa.
abstract: A phytochemical investigation of Turnera diffusa afforded 35 compounds, comprised of flavonoids, terpenoids, saccharides, phenolics, and cyanogenic derivatives, including five new compounds (1-5) and a new natural product (6). These compounds were characterized as luteolin 8-C-E-propenoic acid (1), luteolin 8-C-beta-[6-deoxy-2-O-(alpha-l-rhamnopyranosyl)-xylo-hexopyranos-3-uloside] (2), apigenin 7-O-(6' '-O-p-Z-coumaroyl-beta-d-glucopyranoside) (3), apigenin 7-O-(4' '-O-p-Z-coumaroylglucoside) (4), syringetin 3-O-[beta-d-glucopyranosyl-(1-->6)-beta-d-glucopyranoside] (5), and laricitin 3-O-[beta-d-glucopyranosyl-(1-->6)-beta-d-glucopyranoside] (6). Their structures were determined by spectroscopic and chemical methods.
authors.affiliation: Department of Pharmacognosy and National Center for Natural Products Research, Research Institute of Pharmaceutical Sciences, School of Pharmacy, University of Mississippi, Mississippi 38677, USA.
authors.forename: Jianping
authors.initials: J
authors.lastname: Zhao
authors.forename: Rahul S
authors.initials: RS
authors.lastname: Pawar
authors.forename: Zulfiqar
authors.initials: Z
authors.lastname: Ali
authors.forename: Ikhlas A
authors.initials: IA
authors.lastname: Khan
mesh_terms: D005419:Flavonoids / Q000737:chemistry / Q000302:isolation & purification*; D006027:Glycosides / Q000737:chemistry / Q000302:isolation & purification*; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D010636:Phenols / Q000737:chemistry / Q000302:isolation & purification*; D018515:Plant Leaves / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D013237:Stereoisomerism; D013729:Terpenes / Q000737:chemistry / Q000302:isolation & purification*; D029647:Turnera / Q000737:chemistry*
chemical_list: D005419:Flavonoids; D006027:Glycosides; D010636:Phenols; D013729:Terpenes