来自美国红参的两种新达玛烷型三萜皂苷。

Two new dammarane-type triterpene saponins from red American ginseng.

作者信息

Liu Jin-Ping, Lu Dan, Li Ping-Ya

机构信息

Institute of Frontier Medical Science, Jilin University, Changchun, China.

出版信息

J Asian Nat Prod Res. 2011 Mar;13(3):198-204. doi: 10.1080/10286020.2010.550575.

DOI:10.1080/10286020.2010.550575

PMID:21409680

Abstract

Two new dammarane-type triterpene saponins were isolated from the red American ginseng. The new saponins were named as pseudoginsenoside G(1) and pseudoginsenoside G(2). Their structures were elucidated by the combined analysis of NMR and mass spectrometry as 3-O-[β-d-glucopyranosyl-(1 → 2)-β-d-glucopyranosyl]-dammar-12-one-20S,24R-epoxy-3β,25-diol (pseudoginsenoside G(1)) (1) and 3-O-[β-d-glucopyranosyl-(1 → 2)-β-d-glucopyranosyl]-dammar-12-one-20S,24S-epoxy-3β,25-diol (pseudoginsenoside G(2)).

摘要

从美国红参中分离出两种新的达玛烷型三萜皂苷。这两种新皂苷被命名为伪人参皂苷G(1)和伪人参皂苷G(2)。通过核磁共振（NMR）和质谱联用分析确定它们的结构分别为3-O-[β-D-吡喃葡萄糖基-(1→2)-β-D-吡喃葡萄糖基]-达玛-12-酮-20S,24R-环氧-3β,25-二醇（伪人参皂苷G(1)）（1）和3-O-[β-D-吡喃葡萄糖基-(1→2)-β-D-吡喃葡萄糖基]-达玛-12-酮-20S,24S-环氧-3β,25-二醇（伪人参皂苷G(2)）。