A New Phytoecdysone from the Roots of Rhaponticum uniflorum
Titel:
A New Phytoecdysone from the Roots of Rhaponticum uniflorum
Auteur:
Li, Xi-Qiang Wang, Jin-Hui Wang, Su-Xian Li, Xian
Verschenen in:
Journal of Asian natural products research
Paginering:
Jaargang 2 (2000) nr. 3 pagina's 225-229
Jaar:
2000-08-01
Inhoud:
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.