| studies on the constituents of clematis species. vii. triterpenoid saponins from the roots of clematis terniflora dc. var. robusta tamura. | from the roots of clematis terniflora, nine new oleanolic acid 3,28-o-bisdesmosides called clematernosides a, b, e, f, g, h, i, j and k, and two new hederagenin 3,28-o-bisdesmosides called clematernosides c and d, have been isolated together with two known saponins, huzhangoside b and clematichinenoside c. the structures of the new saponins have been elucidated based on chemical and spectral evidence. among the new spaonins, clematernosides i and j have a nonasaccharide moiety and a total of twe ... | 1998 | 9880908 |