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New Eremophilane Sesquiterpenes from Ligularia japonica

✍ Scribed by Ji-Qing Xu; Li-Hong Hu

Publisher
John Wiley and Sons
Year
2009
Tongue
German
Weight
159 KB
Volume
92
Category
Article
ISSN
0018-019X

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✦ Synopsis

Abstract

magnified image

Four new eremophilane‐type sesquiterpenes, 3__β__‐(acetyloxy)‐6__β__‐(2‐methylbutanoyloxy)‐10__β__‐hydroxyeremophil‐7(11)‐en‐12,8__α__‐olide (1), 3__β__‐(acetyloxy)‐6__α__,7__α__‐epoxy‐11‐noreremophil‐9(10)‐ene‐8,11‐dione (2), 3__β__‐hydroxy‐11‐noreremophila‐6(7),9(10)‐diene‐8,11‐dione (3), and 3__β__‐(3‐methylbutanoyloxy)‐11‐noroxoeremophila‐6(7),9(10)‐diene‐8,11‐dione (4) were isolated from roots of Ligularia japonica. The structures of the new compounds were elucidated through spectral studies including HR‐EI‐MS, IR, and NMR data.

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