A New Phytoecdysone from the Roots of Rhaponticum uniflorum
Title:
A New Phytoecdysone from the Roots of Rhaponticum uniflorum
Author:
Li, Xi-Qiang Wang, Jin-Hui Wang, Su-Xian Li, Xian
Appeared in:
Journal of Asian natural products research
Paging:
Volume 2 (2000) nr. 3 pages 225-229
Year:
2000-08-01
Contents:
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 2β,3β,11α,14α,20ξ,22ξ-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.