title: Phenolic compounds from the aqueous extract of Acacia catechu.
abstract: Two new phenolic compounds, 5-hydroxy-2-[2-(4-hydroxyphenyl) acetyl]-3-methoxylbenzoic acid (1) and (2S,3S)-3,7,8,3',4'-pentahydroxyflavane (2), were obtained from the aqueous extract of Acacia catechu, along with four known compounds identified as rhamnetin (3), 4-hydroxyphenyl ethanol (4), 3,3',5,5',7-pentahydroxyflavane (5), and fisetinidol (6). Their structures were determined on the basis of spectroscopic analysis. Free radical-scavenging activities of the new compounds were evaluated.
authors.affiliation: State Key Laboratory for Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China.
authors.forename: Xing-Cui
authors.initials: XC
authors.lastname: Li
authors.forename: Chao
authors.initials: C
authors.lastname: Liu
authors.forename: Li-Xin
authors.initials: LX
authors.lastname: Yang
authors.forename: Ruo-Yun
authors.initials: RY
authors.lastname: Chen
mesh_terms: D000045:Acacia / Q000737:chemistry*; D001565:Benzoates / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D004365:Drugs, Chinese Herbal / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D005419:Flavonoids / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D016166:Free Radical Scavengers / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D015394:Molecular Structure; D010636:Phenols / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D011794:Quercetin / Q000031:analogs & derivatives / Q000737:chemistry; D014867:Water
chemical_list: C561955:(2S,3S)-3,7,8,3',4'-pentahydroxyflavane; C561954:5-hydroxy-2-(2-(4-hydroxyphenyl) acetyl)-3-methoxylbenzoic acid; D001565:Benzoates; D004365:Drugs, Chinese Herbal; D005419:Flavonoids; D016166:Free Radical Scavengers; D010636:Phenols; D014867:Water; C063423:rhamnetin; D011794:Quercetin