New steroidal saponins from the roots of Solanum melongena L.
作者:Bing-You Yang、Xin Yin、Yan Liu、Dong-Ying Zhao、Hai-Xue Kuang
DOI:10.1016/j.fitote.2018.04.021
日期:2018.7
Phytochemical investigation of the roots of Solanum melongena L. resulted in the isolation of six new steroidal saponins, including five new cholestane saponins (1-5) and one new steroidal alkaloid (6), along with one new natural product (7) and three know steroids (8-10). The structures of all isolated compounds were determined by 1D and 2D NMR experiments and by comparison of their spectroscopic
对茄茄的根进行植物化学研究后,分离出六种新的甾体皂苷,包括五种新的胆甾烷皂苷(1-5)和一种新的甾体生物碱(6),以及一种新的天然产物(7)和三种知道类固醇(8-10)。通过1D和2D NMR实验确定所有分离的化合物的结构,并将它们的光谱和物理数据与文献值进行比较。对于所有分离的化合物,测定了在RAW 264.7细胞系中由脂多糖(LPS)刺激的对一氧化氮(NO)产生的抑制活性。化合物1、2和4-9表现出对NO产生的中度抑制,IC50值为12.6至59.5μM。