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9alpha,20-Dihydroxyecdysone, a new natural ecdysteroid from Silene italica ssp. nemoralis
Zita Pongrácz1, Mária Báthori, Gábor Tóth
1Department of Pharmacognosy, University of Szeged, Szeged, Eötvös utca 6, H-6720, Hungary.
Abstract:
A new natural compound, 9alpha,20-dihydroxyecdysone (1), and two known related compounds, 20-hydroxyecdysone and ecdysone, were isolated from the herb Silene italica ssp. nemoralis. Compound 1 is the first C-9 hydroxylated ecdysteroid with a cis-fused A/B ring junction to have been isolated from a plant source, and its structure was determined using a combination of spectroscopic techniques.
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