title: Two new flavonols from Cudrania cochinchinensis.
abstract: Two new flavonols, 6-p-hydroxybenzyl kaempferol (1) and 6-p-hydroxybenzyl quercetin (2), together with six known compounds were isolated from the roots of Cudrania cochinchinensis and their structures elucidated on the basis of spectroscopic methods. Their antioxidant capacities were evaluated by 1,1-diphenyl-2-picryl-hydrazyl and 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) radical-scavenging assays. The results suggested that compounds 2, 4, and 7 showed significant radical-scavenging activities.
authors: a School of Pharmaceutical Science, Central South University , Changsha 410013 , China.
authors: Qi
authors: Q
authors: Zhou
authors: Li
authors: L
authors: Chen
authors: Hong-Jun
authors: HJ
authors: Yin
authors: Bin
authors: B
authors: Li
authors: Ying
authors: Y
authors: Tian
authors: Heng-Wen
authors: HW
authors: Chen
authors: Yan-Hua
authors: YH
authors: Xiao
authors: Xuan-Hui
authors: XH
authors: He
authors: Yu-Liang
authors: YL
authors: Zeng
authors: Jun-Xing
authors: JX
authors: Dong
mesh_terms: D000975:Antioxidants / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D001713:Biphenyl Compounds / Q000494:pharmacology; D004365:Drugs, Chinese Herbal / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D044948:Flavonols / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D016166:Free Radical Scavengers / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D044949:Kaempferols / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D015394:Molecular Structure; D029586:Moraceae / Q000737:chemistry*; D010851:Picrates / Q000494:pharmacology; D018517:Plant Roots / Q000737:chemistry; D011794:Quercetin / Q000031:analogs & derivatives* / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology
chemical_list: C000593053:6-p-hydroxybenzyl kaempferol; C000593054:6-p-hydroxybenzyl quercetin; D000975:Antioxidants; D001713:Biphenyl Compounds; D004365:Drugs, Chinese Herbal; D044948:Flavonols; D016166:Free Radical Scavengers; D044949:Kaempferols; D010851:Picrates; D011794:Quercetin; C004931:1,1-diphenyl-2-picrylhydrazyl
keywords: 6-p-hydroxybenzyl quercetin; 6-p-hydroxybenzylkaempferol; Cudrania cochinchinensis; antioxidant activity; flavonols