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[摘要]：Three new and one known ecdysteroids were identified in the MeOH extract of the roots of Serratula wolffii. The new compounds isolated were (11 alpha)-11-hydroxyshidasterone (1), (2 beta,3 alpha,5 beta,14 beta,22R)-2,3,20,22,25-pentahydroxvcholest-7-en-6-one (2), and (2 beta,3 alpha,5 beta,22R)-2,3,20,22,25-pentahydroxycholest-7-en-6-one (3). together with the known ponasterone A (4). This latter compound was now better characterized than earlier. The structures of compounds 1-4 were established by extensive spectroscopic techniques, including one- and two-dimensional NMR methods. |
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