TRITERPENE SAPONINS FROM TETRAPANAX-PAPYRIFERUM KOCH,K

Four new oleanane-type saponins, papyrioside LA-LD, were isolated from the leaves of Tetrapanax papyriferum. The structures of these new com pounds were elucidated as 11 dioxo-olean-12-en-28-oyl-alpha-L-rhamnopy ranosyl-( -D-glucopyranosyl)-(1-->6)-beta-D-glucopyranoside, 11 alpha- methoxy-3,21-dioxo-olean-12 -D-glucopyranosyl)-(1-->6)-beta-D-glucopyr anoside, 3 alpha-hydroxy-11 hamnopyranosyl-(1-->4)-(6-O-acetyl-beta-D- glucopy- ranosyl)-(1-->6)-beta-D-glucopyranoside and 21 alpha-hydroxy- 11 methoxy-3-oxo-olean-12-en-28-oyl-alpha-L-rhamnopy- -D-glucopyranosy l-(1-->6)-beta-D-glucopy-ranoside, respectively, on the basis of spect roscopic and chemical evidence.