Elvira R. Zaripova

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The reaction of 20-hydroxyecdysone with methyl or ethyl iodide or allyl bromide in a lithium-ammonia solution results in stereospecific 7α-alkylation to give 7α-methyl-, 7α-ethyl-, and 7α-allyl-14-deoxy-Δ(8(14))-20-hydroxyecdysones, respectively. By catalytic hydrogenation (Pd-C/MeOH), the 7α-allyl derivative was converted to(More)
Plants of the genus Serratula (Asteraceae) number about 50 species that are of interest as sources of phytoecdysteroids and are used more and more often as drugs with a broad spectrum of pharmacological activity [1–3]. The ecdysteroid composition is most well studied for the species S. coronata L. [4–7]. The species S. quinquefolia Bied. ex Willd. is(More)
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