Xanthone Glycoside Constituents of <i>Swertia kouitchensis</i> with α-Glucosidase Inhibitory Activity
作者:Luo-Sheng Wan、Qiu-Xia Min、Yong-Long Wang、Yao-Dong Yue、Jia-Chun Chen
DOI:10.1021/np400082g
日期:2013.7.26
Ten new xanthone glycosides, kouitchensides A–J (1–10), and 11 known analogues were isolated from an n-butanol fraction of Swertia kouitchensis. The structures of these glycosides were determined on the basis of extensive spectroscopic data interpretation and comparison with data reported in the literature. In an in vitro test, compounds 2, 4, 5, 6, 11, 12, and 13 (IC50 values in the range 126 to 451
从Swertia kouitchensis的正丁醇级分中分离出十个新的黄酮苷,kouitchensides A–J(1 – 10)和11种已知的类似物。这些糖苷的结构是在广泛的光谱数据解释和与文献报道的数据比较的基础上确定的。在体外测试中,化合物2,4,5,6,11,12,和13(IC 50个范围为126至451μM值)显示对α葡糖苷酶活性更有效的抑制效果比阳性对照,阿卡波糖( IC 50 值627μM)。