New Immunomodulating Polyhydroxypregnane Glycosides from the Roots of
<i>Cynanchum otophyllum</i>
C.K.
<scp>Schneid</scp>
.
作者:Zha‐Jun Zhan、Shu‐Min Bao、Yue Zhang、Fei‐Jun Qiu、Wei‐Guang Shan、Lie‐Feng Ma
DOI:10.1002/cbdv.201900062
日期:2019.6
Seven new polyhydroxypregnane glycosides, named cynotophyllosides P-V, together with three known analogs were isolated from the roots of Cynanchum otophyllum C.K.Schneid. Their structures were elucidated by a variety of spectroscopic techniques, as well as acid-catalyzed hydrolysis. All isolates were tested for their immunological activities in vitro against Con A- and LPS-induced proliferation of
从Cynanchum otophyllum CKSchneid的根中分离出七种新的聚羟基孕烯苷,称为cynotophyllosides PV,以及三种已知的类似物。通过各种光谱技术以及酸催化水解阐明了它们的结构。测试了所有分离株的抗Con A和LPS诱导的小鼠脾细胞增殖的体外免疫活性。观察到了免疫增强(针对1、9)和免疫抑制(针对2)活性。此外,叶绿素R(3)具有免疫调节作用,因为它在低浓度时增强了脾细胞的增殖,在浓度大于1.0μg/ ml时抑制了免疫细胞。