广东冬青中的三萜及三萜皂甙成分

TRITERPENOID SAPONINS AND TRITERPENES FROM ILEX KWANGTUNGENSIS

摘要:

从广东冬青(Ilex kwangtungensis)的叶中分离得到四个三萜皂甙和三个三萜成分,通过光谱解析及化学方法,三个三萜成分分别鉴定为齐墩果酸(1)、熊果酸(2)和常春藤皂甙元(3);四个三萜皂甙成分分别鉴定为齐墩果酸3-O-β-D-吡喃葡萄糖基-(1→3)、-α-L-吡喃阿拉伯糖甙(4)、齐墩果酸3-O-β-D-吡喃葡萄糖基-(1→2)-α-L-吡喃阿拉伯糖甙(5)、齐墩果酸3-O-β-D-吡喃葡萄糖基-(1→2)β-D-吡喃葡萄糖甙(6)和齐墩果酸3-O-β-D-吡喃葡萄糖基-(1→2)-β-D-吡喃半乳精甙(7)。本文系首次报道广东冬青的化学成分。

Abstract:

Four triterpenoid saponins along with three triterpenes, oleanolic acid (1), ursolic acid (2) and hederagenin (3) were isolated from the leaves of flex kwangtungensis. By spectroscopic and chemical methods, the structures of the four saponins were identified as 3-O-β-D- glucopyranosyl-(1 →3)-α-L-arabinopyranosylxileanoli acid (4), 3-O-β-D-glucopyranosyl- (1→2)-α-L-arabinopy-ranosylxileanol acid (5), 3-O-β-D-glucopyranosyl- oleanolic acid (6) and 3-O-β-D-glucopyranosyl(1→ 2)-β-D-galactopyranosyl-oleanolic acid (7).This paper is the first report of the chemical constituents from this plant.