Four New 13,28‐Epoxyoleanane Saponins from Lysimachia lobelioides |
| |
| Authors: | Qi‐Ji Li Zhu Zhu Xiao‐Sheng Yang Xiao‐Jiang Hao |
| |
| Institution: | 1. The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences, Guiyang 550002, P.?R. China, (phone: +86‐851‐3805459;2. fax: +86‐851‐3805081, ext. 550002) |
| |
| Abstract: | Four new oleanane saponins, lobelioidosides A–D ( 1 – 4 , resp.), all endowed with 16‐oxo and a 23‐OH group, as well as with a 13,28‐epoxy bridge as a common moiety, have been isolated from the 75% EtOH extract of the whole plant of Lysimachia lobelioides. Their structures were elucidated on the bases of MS, 1H‐ and 13C‐NMR, HMQC, HMBC, and 1H,1H‐COSY data analysis. |
| |
| Keywords: | Lysimachia lobelioides Saponins Triterpenoid saponins Oleanane saponins Lobelioidosides A – D |
|
|
