title: Unique phenolic carboxylic acids from Sanguisorba minor.
abstract: The unique phenolic carboxylic acids, 4,8-dimethoxy-7-hydroxy-2-oxo-2H-1-benzopyran-5,6-dicarboxylic acid and 2-(4-carboxy-3-methoxystyryl)-2-methoxysuccinic acid were isolated and identified from the whole Sanguisorba minor plant. The known phenolics, gallic acid; ellagic acid; quercetin-3-O-(6"-galloylglucose); beta-glucogallin; 2,3-hexahydroxydiphenoyl-(alpha/beta)-glucose; 1-galloyl-2,3-hexahydroxydiphenoyl-alpha-glucose together with its beta-isomer were also characterized. Structures were established by conventional methods of analysis and confirmed by NMR and ESI-MS spectral analysis.
authors.affiliation: Department of Pharmacognosy, Faculty of Pharmacy, Ain Shams University, Cairo, Egypt. ayoub.n@link.com.eg
authors.forename: Nahla A
authors.initials: NA
authors.lastname: Ayoub
mesh_terms: D002264:Carboxylic Acids / Q000737:chemistry* / Q000302:isolation & purification; D007536:Isomerism; D019906:Nuclear Magnetic Resonance, Biomolecular; D010636:Phenols / Q000737:chemistry* / Q000302:isolation & purification; D010946:Plants, Medicinal / Q000737:chemistry; D031993:Sanguisorba / Q000737:chemistry*; D021241:Spectrometry, Mass, Electrospray Ionization
chemical_list: D002264:Carboxylic Acids; D010636:Phenols