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Three New Thiophene Acetylenes from Rhaponticum uniflorum (L.) DC.

✍ Scribed by Hai-Li Liu; Yue-Wei Guo

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

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✦ Synopsis

Abstract

Three new thiophene‐acetylenes, 7‐chloroarctinone‐b (1), rhapontiynethiophenes A (2) and B (3), along with arctinone‐b (4) were isolated from the MeOH extract of the roots of Rhaponticum uniflorum (L.) DC. The structures of the new compounds were elucidated by detailed spectroscopic data analysis and by comparison with known compounds.

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New Eudesmane Sesquiterpene and Thiophene Derivatives from the Roots of Rhaponticum uniflorum. -The new sesquiterpene (I), named Rhaponticol, and some known thiophene derivatives are isolated from the roots of Rhaponticum uniflorum. Their structures are elucidated by spectroscopic techniques.