Novel Ecdysteroids from Serratula wolffii
2012
Two new and one known ecdysteroids were identified in the methanolic extract of the roots of Serratula wolffii. The new compounds isolated were ponasterone A-22-apioside (1) and 3-epi-shidasterone (3), together with the known 3-epi-22-deoxy-20-hydroxyecdysone (2). The structures of compounds 1–3 were determined by extensive spectroscopic techniques, including one- and two-dimensional NMR methods.
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