Eighteen novel triterpenoid saponins, named tragopogonsaponins A-R, were isolated from the roots of Tragopogon porrifolius L. (Compositae). The structures of these saponins were determined on the basis of spectral and chemical evidence. Seventeen of the saponins contained phenyl propionic acid derivative as ester moiety. Their structures were elucidated as oleananae-type triterpene saponins which have echinocystic acid as the aglycone moiety.
compositae, echinocystic acid, Tragopogon porrifolius, oleanane-type triterpene saponin, tragopogonsaponin, phenylpropanoid
Journal NLM ID: 0377775WWW link: http://ci.nii.ac.jp/naid/110003629121Publisher: Pharmaceutical Society Of Japan
Institutions: School of Pharmaceutical Sciences, University of Shizuoka, Japan
Methods: 13C NMR, 1H NMR, FAB-MS, GC, HPLC, UV