Die Pharmazie 2001-Oct
Ecdysteroids from Rhaponticum uniflorum.
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Five phytoecdysteroids were isolated from the roots of Rhaponticum uniflorum. They were identified as ecdysterone, ajugasterone C, ajugasterone C-20,22-monoacetonide, ajugasterone C-2,3,20,22-diacetonide and 5-deoxykaladasterone-20,22-monoacetonide by means of spectroscopic data. This is the first report of ajugasterone C-2,3,20,22-diacetonide and 5-deoxykaladasterone-20,22-monoacetonide isolated from a natural source.