来自克氏鹅掌柴的皂苷和酰化皂苷。

Saponins and acylated saponins from Dizygotheca kerchoveana.

作者信息

Melek F R, Miyase Toshio, Abdel-Khalik S M, Mahmoud I I, Mina S A

机构信息

Chemistry of Natural Products Department, National Research Centre, Dokki, 12622 Cairo, Egypt.

出版信息

Phytochemistry. 2004 Dec;65(23):3089-95. doi: 10.1016/j.phytochem.2004.08.049.

DOI:10.1016/j.phytochem.2004.08.049

PMID:15541736

Abstract

Four new triterpenoid saponins were isolated from the leaves and stem of branches of Dizygotheca kerchoveana along with seven known ones. The new saponins were respectively characterized as 3-O-[beta-D-glucopyranosyl-(1-->3)]-[beta-D-glucopyranosyl-(1-->2)]-alpha-L-arabinopyranosyl echinocystic acid, 3-O-[beta-D-glucopyranosyl-(1-->3)]-[beta-D-glucopyranosyl-(1-->2)]-alpha-L-arabinopyranosyl echinocystic acid 28-O-[alpha-L-rhamnopyranosyl-(1-->4)-beta-D-glucopyranosyl-(1-->6)-beta-D-glucopyranosyl] ester, 3-O-[beta-D-3-O-trans-p-coumaroyl-glucopyranosyl-(1-->3)]-[beta-D-glucopyranosyl-(1-->2)]-alpha-L-arabinopyranosyl echinocystic acid 28-O-[alpha-L-rhamnopyranosyl-(1-->4)-beta-D-glucopyranosyl-(1-->6)-beta-D-glucopyranosyl] ester and 3-O-[beta-d-3-O-cis-p-coumaroyl-glucopyranosyl-(1-->3)]-[beta-D-glucopyranosyl-(1-->2)]-alpha-L-arabinopyranosyl echinocystic acid 28-O-[alpha-L-rhamnopyranosyl-(1-->4)-beta-D-glucopyranosyl-(1-->6)-beta-D-glucopyranosyl] ester. Their structures were elucidated by 1D and 2D NMR experiments, FAB-MS as well as chemical means.

摘要

从克氏鹅掌柴的叶和茎枝中分离得到了4个新的三萜皂苷以及7个已知的三萜皂苷。新皂苷分别被鉴定为3-O-[β-D-吡喃葡萄糖基-(1→3)]-[β-D-吡喃葡萄糖基-(1→2)]-α-L-阿拉伯吡喃糖基刺囊酸、3-O-[β-D-吡喃葡萄糖基-(1→3)]-[β-D-吡喃葡萄糖基-(1→2)]-α-L-阿拉伯吡喃糖基刺囊酸28-O-[α-L-鼠李吡喃糖基-(1→4)-β-D-吡喃葡萄糖基-(1→6)-β-D-吡喃葡萄糖基]酯、3-O-[β-D-3-O-反式对香豆酰基-吡喃葡萄糖基-(1→3)]-[β-D-吡喃葡萄糖基-(1→2)]-α-L-阿拉伯吡喃糖基刺囊酸28-O-[α-L-鼠李吡喃糖基-(1→4)-β-D-吡喃葡萄糖基-(1→6)-β-D-吡喃葡萄糖基]酯和3-O-[β-d-3-O-顺式对香豆酰基-吡喃葡萄糖基-(1→3)]-[β-D-吡喃葡萄糖基-(1→2)]-α-L-阿拉伯吡喃糖基刺囊酸28-O-[α-L-鼠李吡喃糖基-(1→4)-β-D-吡喃葡萄糖基-(1→6)-β-D-吡喃葡萄糖基]酯。通过一维和二维核磁共振实验、快原子轰击质谱以及化学方法对它们的结构进行了阐明。