古蔺雪胆中的新三萜皂苷

从采自四川汉源县的古蔺雪胆(Hemsleya penxianensis var.gulinensiks)中分到9个三萜皂苷化合物，通过化学反应和光谱方法鉴定了它们的结构。其中7个为已知化合物，分别为齐墩果酸-28-O-β-D-比喃葡萄糖苷(1)，3-O-β-D-吡喃葡萄糖醛基齐墩果酸苷(3)，3-O-β-D-吡喃葡萄糖醛基—齐墩果酸—28-O-α-L-吡喃阿拉伯糖苷(4)，3-O-β-D-吡喃葡萄糖醛基—齐墩果酸—28-O-β-D-吡喃葡萄糖苷(5)，3-O-α-L-阿拉伯糖基—(1→3)—β—D-吡喃葡萄糖醛基—齐墩果酸—28—O—β—D—吡喃葡萄糖苷(6)，3—O—(6′—丁酯)—β-D-吡喃葡萄糖醛基—齐墩果酸—28-O-α-L-阿拉伯糖苷(7)，3-O-(6′-丁酯)—β—D吡喃葡萄糖醛基—齐墩果酸—28-O-β-D-吡喃葡萄糖苷(8)。两个新化合物，即雪胆皂苷A(2)和雪胆皂苷B(9)。

New Triterpenoid Glycosides from Hemsleya penxianensis var.gulinensis

Two new triterpenoid saponins were isolated from the roots of Hemsleya penxianensis var. gulinensis together with seven known saponins oleanolic acid 28-O-β-D-glucopyranoside (1), oleanolic acid 3-O-β-D-glucuropyranoside (3), 3-O-β-D-glucuropyranosyl-oleanolic acid-28-O-α-L-arabinopyranoside (4),3-O-β-D-glucuropyranosyl-oleanolic acid-28-O-β-D-glucuropyranoside (5),3-O-α-L-arabinopyranosyl-(1→3)-β-D-glucuropyranosyl-oleanolic acid-28-O-β-D-glucopyranoside (6),3-O-(6′-butyl ester)-β-D-glucuropyran-osyl-oleanolic acid-28-O-α-L-arabinopyranoside (7),3-O-(6′-butyl ester)-β-D-glucuropyranosyl-oleanolic acid-28-O-β-D-glucopyranoside (8).The structures of determined as:oleanolic acid 28-O-β-D-glucopyransyl-(1→6)-β-D-glucopyranoside (2),3-O-α-L-arabonipyranosyl-(1→3)-(6′-butyl ester)-β-D-glucuropyranosyl-oleanolic acid-28-O-β-D-glucuropyranoside (9).Their structures were determined on the bases of the spectral and chemical evidences.