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New Guaipyridine Sesquiterpene Alkaloids from Artemisia rupestris L.
Author(s) -
Su Zhen,
Wu HanKui,
He Fei,
Slukhan Usmanova,
Aisa Haji Akber
Publication year - 2010
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.200900125
Subject(s) - chemistry , sesquiterpene , alkaloid , stereochemistry , artemisia , absolute configuration , botany , biology
Three new guaipyridine sesquiterpene alkaloids, rupestine A, B, C ( 1 – 3 , resp.), and the new nor‐sesquiterpne alkaloid rupestine D ( 4 ) were obtained from the flowers of Artemisia rupestris L. Their structures were elucidated on the basis of sepectroscopic data and by comparison with those of the related compounds reported in the literature. In addition, the absolute configurations of 2 and 4 were determined by single‐crystal X‐ray diffraction analyses.