黄花远志的新齐墩果烷型三萜皂甙

从云南产远志科药用植物黄花远志(PolygalaarillataBuchHamexDDon)茎皮的乙醇提取物中分离得到4个新的齐墩果烷型三萜皂甙,命名为黄花远志皂甙(arillatanoside)A～D。同时还分离得到1个已知的三萜皂甙远志甙(polygalasaponin)XXXV。它们的结构通过波谱方法推定。

New Oleanane Triterpenoid Saponins from Polygala arillata

Four new oleanane triterpenoidal saponins, arillatanoside A～D, together with a known saponin polygalasaponin XXXV were isolated from the stem bark of Polygala arillata. The structures of new saponins were established to be 28-O-α-L-arabinopyranosyl-(1→3)-β-D-xylopyranosyl-(1→4)-α-L-rhamnopyranosyl-(1→2)-β-D-fucopyranosyl presenegenin-3-O-β-D-glucopyranoside, 28-O-β-D- galactopyranosyl-(1→4)-α-L-arabinopyranosyl-(1→3)]-β-D-xylopyranosyl-(1→4)-α-L-rhamnopyranosyl -(1→2)-4-O-acetyl]-β-D-fucopyranosyl presenegenin-3-O -β-D-glucopyranoside, 28-O-β-D-galactopyranosyl-(1→4)-α-L-arabinopyranosyl-(1→3)]-β-D-xylopyranosyl-(1→4)-α-L-rhamnopyranosyl-(1→2)-β-D-fucopyranosyl presenegenin 3-O-β-D-glucopyranoside and 28-O-β-D-galactopyranosyl-(1→4)α- L-arabinopyranosyl-(1→3)]-β-D-xylopyranosyl-(1→4)-β-D-apiofurarnosyl-(1→3)]-α-L-rhamnopyranosyl-(1→2)-β-D-fucopyranosyl presenegenin-3-O-β-D- glucopyranoside, respectely, by FAB-MS and NMR spectroscopy.