Further Sesquiterpene Lactones from Eupatorium altissimum.
A reinvestigation of the aerial parts of EUPATORIUM ALTISSIMUM afforded, in addition to several, previously isolated sesquiterpene lactones, five new ones. The structures of these were elucidated by highfield (1)H-NMR spectroscopy.
Jakupovic
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Institute for Organic Chemistry, Technical University of Berlin, Straße des 17. Juni 135, D-1000 Berlin 12, W. Germany.
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Bohlmann
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King
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