【摘要】 从金铁锁 (PsammosilenetunicoidesW .C .WuetC .Y .Wu)根部分离得到 5个齐墩果烷型五环三萜皂苷。它们的结构通过波谱和化学方法分别鉴定为 :3 O β D galactopyranosyl (1→ 2 ) β D glucuronopyranosyl gypsogenin (1) ,3 O β D galactopyranosyl (1→ 2 ) [β D xylopyranosyl (1→ 3) ] β D glucuronopyranosyl gypsogenin (2 ) ,3 O β D galactopyranosyl (1→ 2 ) β D glucuronopyra nosyl gypsogenin 2 8 O β D xylopyranosyl (1→ 4 ) [β D glucopyranosyl (1→ 3) ] α L rhamnopyranosyl(1→ 2 ) β D fucopyranoside (LobatosideI ,3) ,3 O β D galactopyranosyl (1→ 2 ) [β D xylopyranosyl (1→ 3) ] β D glucuronopyranosylgypsogenin 2 8 O β D xylopyranosyl (1→ 4 ) [β D glucopyranosyl (1→ 3) ] α L rhamnopyranosyl(1→ 2 ) β D fucopyranoside (4 ) ,3 O β D galactopyranosyl (1→ 2 ) β D glucuro nopyranosyl gypsogenin 2 8 O β D xylopyranosyl (1→ 4 ) [β D 6 O acetylglucopyranosyl (1→ 3) ] α L rh amnopyranosyl(1→ 2 ) β D fucopyranoside (5 )。其中 5为新化合物 ,1和 2为首次从自然界中分离得到。更多还原

【Abstract】 Five oleanane-type triterpenoid saponins were isolated from the roots of Psammosilene tunicoides W.C.Wu et C.Y.Wu. Their structures were elucidated by spectral and chemical methods as 3-O-β-D-galactopyranosyl-(1→2)-β-D-glucuronopyranosyl-gypsogenin(1),3-O-β-D-galactopyranosyl-(1→2)--D-xylopyranosyl-(1→3)]-β-D--β-D-glucuronopyranosyl-gypsogenin(2), 3-O-β-D-galactopyranosyl-(1→2)-β-D-glucuronopyranosyl-gypsogenin-28-O-β-D-xylopyranosyl-(1→4)-[β-D-glucopyranosyl-(1→3)]-(-L-rhamnopyranosyl(1→2)-β-D-fucopyranoside(Lobatoside I,3),3-O-β-D-galactopyranosyl-(1→2)-[β-D-xylopyranosyl -(1→3)]-β-D-glucuronopyranosyl-gypsogenin-28-O-β-D-xylopyranosyl-(1→4)-[β-D-glucopyranosyl-(1→3)]-α-L-rhamnopyranosyl(1→2)-β-D-fucopyranoside (4),3-O-β-D-galactopyranosyl-(1→2)-β-D-glucuronopyranosyl-gypsogenin-28-O-β-D-xylopyranosyl-(1→4)-[β-D-6-O-acetyl- glucopyranosyl-(1→3)]-α-L-rhamnopyranosyl(1→2)-β-D-fucopyranoside (5). Among them, compound 5 was a new triterpenoid saponin.更多还原