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Two new flavonols from Cudrania cochinchinensis
Authors:Qi Zhou  Li Chen  Hong-Jun Yin  Bin Li  Ying Tian  Heng-Wen Chen
Affiliation:1. School of Pharmaceutical Science, Central South University, Changsha 410013, China;2. Beijing Institute of Radiation Medicine, Beijng 100850, China
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.
Keywords:Cudrania cochinchinensis  flavonols  6-p-hydroxybenzylkaempferol  6-p-hydroxybenzyl quercetin  antioxidant activity
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