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Planta Med 1998; 64(8): 724-727
DOI: 10.1055/s-2006-957566
DOI: 10.1055/s-2006-957566
Papers
Natural Product Chemistry
© Georg Thieme Verlag Stuttgart · New York
Xanthanolides and Xanthane Epoxide Derivatives from Xanthium strumarium
Further Information
Publication History
1998
1998
Publication Date:
04 January 2007 (online)
Abstract
From the aerial parts of Xanthium strumarium, three new xanthanolide and xanthane-type sesquiterpenoids, 11α,13-dihydroxanthatin (2), 4β,5β-epoxyxanthatin-1α,4α-endoperoxide (3), and 1β,4β,4α,5α-diepoxyxanth-11(13)-en-12-oic acid (10) have been isolated, together with seven known compounds. The structures were determined by spectroscopic methods, particularly high resolution 1D, 2D NMR spectroscopy and NOE experiments.
Key words
Xanthium strumarium - Asteraceae - sesquiterpenoids - xanthanolides - endoperoxide - xanthane epoxide