Three New E‐Secoursane Triterpenoid Saponins from the Leaves of Ilex dunniana |
| |
| Authors: | Yue Zhang Lu‐Jun Li Peng Zhang Hui‐Fang Pi Han‐Li Ruan Ji‐Zhou Wu |
| |
| Affiliation: | Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, Tongji School of Pharmacy, Huazhong University of Science and Technology, No. 13 Hangkong Rd., Wuhan 430030, P.?R. China |
| |
| Abstract: | Three new triterpenoid saponins with an 18,19‐secours‐13(18)‐ene skeleton, dunnianaolactones A–C ( 1 – 3 , resp.), together with nine known compounds i.e., the ursane‐type triterpene saponin 4 , the two benzofuran lignans 5 and 6 , five flavonoid glycosides, and 4‐hydroxybenzoic acid, were isolated from the leaves of Ilex dunniana Levl . (Aquifoliaceae). Their structures were elucidated by means of spectroscopic and chemical methods. The configuration of dunnianaolactone A ( 1 ) was further confirmed by X‐ray crystal‐structure analysis. |
| |
| Keywords: | Ilex dunniana Triterpenoid saponins Dunnianaolactones A – C X‐Ray crystallography Saponins |
|
|
