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Five New Eremophilane Sesquiterpenes from Ligularia przewalskii
Author(s) -
Xu JiQing,
Hu LiHong
Publication year - 2008
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.200890101
Subject(s) - chemistry , stereochemistry
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.