Flavonol glycosides from the aerial parts of Gynostemma pentaphyllum and their antioxidant activity
作者:Hari Jang、Jin Woo Lee、Chul Lee、Qinghao Jin、Myung Koo Lee、Chong Kil Lee、Mi Kyeong Lee、Bang Yeon Hwang
DOI:10.1007/s12272-016-0793-x
日期:2016.9
The phytochemical investigation of the aerial parts of Gynostemma pentaphyllum led to the isolation of a new flavonol glycoside, gynopentaphylloside (1), along with seven known compounds (2–8). The structure of the new compound was determined on the basis of 1D, 2D NMR and HRESIMS data as well as acid hydrolysis. The antioxidant activity of the isolates was evaluated by a 1,1-diphenyl-2-picrylhydrazyl
绞股蓝地上部分的植物化学研究导致分离出一种新的黄酮醇糖苷绞股蓝苷 (1) 以及七种已知化合物 (2-8)。新化合物的结构是根据 1D、2D NMR 和 HRESIMS 数据以及酸水解确定的。分离物的抗氧化活性通过 1,1-二苯基-2-苦基肼 (DPPH) 自由基清除试验进行评估。