抄録
Four new oleanane-type saponins, papyrioside LA-LD, were isolated from the leaves of Tetrapanax papyriferum. The structures of these new compounds were elucidated as 11α-hydroxy-3, 21-dioxo-olean-12-en-28-oyl-α-L-rhamnopyranosyl-(1→4)-(6-O-acetyl-β-D-glucopyranosyl)-(1→6)-β-D-glucopyranoside, 11α-methoxy-3, 21-dioxo-olean-12-en-28-oyl-α-L-rhamnopyranosyl-(1→4)-(6-O-acetyl-β-D-glucopyranosyl)-(1→6)-β-D-glucopyranoside, 3α-hydroxy-11α-methoxy-21-oxo-olean-12-en-28-oyl-α-L-rhamnopyranosyl-(1→4)-(6-O-acetyl-β-D-glucopyranosyl)-(1→6)-β-D-glucopyranoside and 21α-hydroxy-11α-methoxy-3-oxo-olean-12-en-28-oyl-α-L-rhamnopyranosyl-(1→4)-β-D-glucopyranosyl-(1→6)-β-D-glucopyranoside, respectively, on the basis of spectroscopic and chemical evidence.
