Anthraquinone glycosides from Cassia roxburghii and evaluation of its free radical scavenging activity
作者:Sayed A. El-Toumy、Sahar S. El Souda、Tahia K. Mohamed、Iñaki Brouard、Jame Bermejo
DOI:10.1016/j.carres.2012.07.020
日期:2012.10
its anthraquinone glycosides and antioxidant activity. Two new anthraquinone glycosides named emodin 1-O-beta-D-glucopyranosyl-(1 --> 2)-glucopyranoside (1) and aloemodin 8-O-beta-D-glucopyranosyl-(1 --> 6)-glucopyranoside (2) along with aloemodin 8-O-beta-D-glucopyranoside (3), emodin (4), aloemodin (5) and one flavonoid, quercetin-3-O-alpha-L-rhamnopyranoside, were isolated from the leaves of C. roxburghii
研究了决明子叶片的甲醇提取物的蒽醌糖苷和抗氧化活性。两种新的蒽醌糖苷,称为大黄素1-O-β-D-吡喃葡萄糖基-(1-> 2)-吡喃葡萄糖苷(1)和芦荟素8-O-β-D-吡喃葡萄糖基-(1-> 6)-吡喃葡萄糖苷( 2)从C的叶子中分离出芦荟素8-O-β-D-吡喃葡萄糖苷(3),大黄素(4),芦荟素(5)和一种类黄酮槲皮素-3-O-α-L-鼠李吡喃糖苷roxburghii。分离的化合物的结构通过UV,HRESI-MS和1D / 2D(1)H /(13)C NMR光谱确定。测定了总提取物和一些分离的化合物对DPPH(2,2-二苯基-1-(2,4,6-三硝基苯基)肼基的清除自由基的活性,