A new flavone glycoside was isolated from ethanolic extract of stem parts of Holmskioldia sanguinea Retz. Its structure was characterized as 3,4′-dihydroxy-5,7-dimethoxyflavone-3-O-β-Dgalactopyranosyl(1→4)-O-β-D-arabinopyranosyl-4′-O-α-L-rhamnopyranoside (1) by colour reactions, chemical degradation and spectroscopic analysis. Antibacterial activity of compound 1 was evaluated against various Gram positive and Gram negative bacteria showing a significant effects.
一种新的黄酮苷从Holmskioldia sanguinea Retz的茎部乙醇提取物中分离出来。其结构被确定为3,4′-二羟基-5,7-二甲氧基黄酮-3-O-β-D-半乳糖苷(1→4)-O-β-D-阿拉伯糖苷-4′-O-α-L-鼠李糖苷(1),通过颜色反应、化学降解和光谱分析进行表征。化合物1的抗菌活性针对各种革兰氏阳性和阴性细菌进行评估,显示出显著的效果。