New cycloartane glycosides from Camptosorus sibiricus Rupr.
Titel:
New cycloartane glycosides from Camptosorus sibiricus Rupr.
Auteur:
Li, Ning Li, Xian Li, Xue-Zheng Zhang, Peng Meng, Da-Li
Verschenen in:
Journal of Asian natural products research
Paginering:
Jaargang 10 (2008) nr. 2 pagina's 119-124
Jaar:
2008-02
Inhoud:
Two new cycloartane glycosides were isolated from the whole herbs of Camptosorus sibiricus Rupr. By means of chemical and spectroscopic methods (IR, 1D and 2D NMR, HRMS, ESI MS), the structures were established as (24R)-3β, 7β, 24, 25-tetrahydroxycycloartane 3-O-β-d-glucopyranosyl-24-O-β-d-glucopyranoside (1) and (24R)-3β, 7β, 24, 25-tetrahydroxycycloartane 3-O-β-d-glucopyranosyl-(1 → 2)-β-d-glucopyranosyl-24-O-β-d-glucopyranoside (2). At the same time, two new compounds were tested for their cytotoxicities in vitro against human tumor cell lines (A375-S2, Hela).