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Five New Eremophilane Sesquiterpenes from Ligularia przewalskii

✍ Scribed by Ji-Qing Xu; Li-Hong Hu

Publisher
John Wiley and Sons
Year
2008
Tongue
German
Weight
184 KB
Volume
91
Category
Article
ISSN
0018-019X

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✦ Synopsis

Abstract

Five new eremophilane‐type sesquiterpenes, 3__β__‐(acetyloxy)‐7‐hydroxynoreremophila‐6,9‐dien‐8‐one (1), 8__β__‐hydroxy‐2‐dehydroxyliguhodgsonal (2), 3__β__‐(acetyloxy)‐11‐methoxy‐8‐oxoeremophila‐6,9‐dien‐12‐oic acid (3), 3__β__‐(acetyloxy)‐11‐(2′‐methylbutanoyloxy)‐8‐oxoeremophila‐6,9‐dien‐12‐oic acid (4), and 3__β__‐(acetyloxy)‐6__α__‐hydroxyligularenolide (5), along with the three known compounds 6–8, were isolated from the roots of Ligularia przewalskii. The structures of the new compounds were elucidated through spectral studies including HR‐EI‐MS, IR, and NMR data.

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