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A new phytoecdysone from the roots of Rhaponticum uniflorum
1Research Department of Natural Medicinal, Shenyang Pharmaceutical University, China. lixian@mail.sy.ln.cn
Journal of Asian Natural Products Research
|March 21, 2001
Abstract:
A new ecdysteroid named rhapontisterone R1 (1) together with two known phytoecdysones, rhapontisterone (2) and ecdysterone (3) were isolated from the roots of Rhaponticum uniflorum (L.) DC. The new compound was shown to be 2beta,3beta,11alpha,14alpha,20xi,22xi-hexahydroxy-stigma-7,24(28)-dien-6-oxo-28,25-carbolactone. The structure has been determined primarily on the basis of physico-chemical properties and spectral analysis.