doi:10.1100/2012/651275 The cientificWorldJOURNAL Research Article Novel Ecdysteroids from Serratulawolffii

Copyright © 2012 Attila Ványolós et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Two new and one known ecdysteroids were identified in the methanolic extract of the roots of Serratula wolffii. The new com-pounds 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. 1