Structure determination of two new C<sub>21</sub> steroidal glycosides from <i>Cynanchum komarovii</i>
作者:Dan Zhao、Ming-Xu Tang、Shan-Shan Su、Xiao-Jie Lu、Yu-Bo Wang、Shao-Fei Chen、Hai-Feng Wang、Gang Chen、Yue-Hu Pei
DOI:10.1080/10286020.2017.1396977
日期:2018.9.2
Two new 13,14:14,15-disecopregnane-type C21 steroidal glycosides, namely komarosides R (1) and S (2), along with four known compounds (3–6), were obtained from the 95% ethanol extract of the whole herbs of Cynanchum komarovii Al.Iljinski (Asclepiadaceae). The structures of new compounds were elucidated on the basis of 1D, 2D NMR spectroscopic data and acid hydrolysis. Compounds 1 and 2 showed potent
两个新的13,14-:14,15- disecopregnane-C型21个甾体糖苷,即komarosides R(1)和S(2),具有四个已知化合物(沿3 - 6),是从的95%乙醇提取物得到Cynanchum komarovii Al.Iljinski的全部草药。在1D,2D NMR光谱数据和酸水解的基础上阐明了新化合物的结构。与阳性对照5-氟尿嘧啶(6.4μM)相比,化合物1和2对人白血病细胞系(HL-60)表现出强抑制活性,IC 50值分别为6.2和17.6μM。