西南忍冬花蕾中的两个新三萜皂苷

Two New Saponins from Lonicera bournei Hemsl

从西南忍冬花蕾 (LonicerabourneiHemsl)中分离得到两个新的三萜皂苷 ,分别命名为西南忍冬皂苷A、西南忍冬皂苷B .其结构是 3 O β D 吡喃葡萄糖基 2 3 羟基 羽扇豆烷 2 0 (2 9) 烯 2 8 酸 2 8 O β D 吡喃葡萄糖酯、3 O β D 吡喃葡萄糖基 2 3 羟基 羽扇豆烷 2 0 (2 9) 烯 2 8 酸 2 8 O 〔β D 吡喃葡萄糖基 (1→ 6 ) β D

Two new lupane triterpene glycosides named bourneioside A and bourneioside B were isolated from Lonicera bournei Hemsl.The structures of bourneioside A and B were elucidated as 3 O β D glucopyranosyl 23 hydroxy lup 20(29) en 28 oic acid 28 O β D glucopyranosyl ester and 3 O β D glucopyranosyl 23 hydroxy lup 20(29) en 28 oic acid 28 O 〔β D glucopyranosyl (1→6) β D glucopyranosyl〕ester.