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5,11-Epoxymegastigmanes from the leaves of Asclepias fruticosa)
1Faculty of Pharmaceutical Sciences, Fukuoka University, Japan. abefumi@fukuoka-u.ac.jp
Chemical & Pharmaceutical Bulletin
|January 6, 2001
Abstract:
Five new megastigmane glucosides and one of their aglycones were isolated, along with (6S,9R)-roseoside, from the polar fraction of the leaves of Asclepias fruticosa, and the structures were determined by spectroscopic methods. Most of them have an epoxy-linkage between C-5 and C-11. The configurations at C-3 and C-9 for each compound were confirmed to be S and R, respectively, by application of the modified Mosher's method.
