Abstract: Two new minor steroidal saponins polyphylloside ni and IV were isolated from the aenal parts of Paris polyphylla var. yunnanensis. On the basis of chemical and spectroscopic ana-lysis, their structures were established as 27-hydroxyl-pennogenin 3-0-[a-L-rhamnopyrano-syl (l-2)][a-L-rhamnopyranosyl (1-4)-a-L-rhamnopyranosyl (1-4)]-/?-D-glucopy-ranoside and 23p, 27-dihydroxyl-pennogenin 3-0-[ a-L-rhamnopyranosyl(l- 2)][a-L-rhamnopyranosyl(l-.4)-a-L-rhamnopyranosyl(l-4)]-^-D-glucopyranoside, respectively .

Key words: Paris polphylla var. yunnanensis