Two furostanol saponins were obtained from the n-butanol fraction of methanol extract from Tupistra chinensis rhizomes, a folk medicine of Shennongjia Forest District of Hubei Province. Their structures were determine...Two furostanol saponins were obtained from the n-butanol fraction of methanol extract from Tupistra chinensis rhizomes, a folk medicine of Shennongjia Forest District of Hubei Province. Their structures were determined as （25S）-26-O-（β-D-glucopyranosyl）- furost-1β, 3β, 22α, 26-tetrol-3-O-β-D-glucopyranosyl-（1 → 4）-β-D-glucopyranosyl-（1 → 2）-β-D-glucopyranoside （1） and （25R）- 26-O-（β-D-glucopyranosyl）-furost-1β, 3β 22a, 26-tetrol 3-O-β-D-glucopyranosyl-（1 → 4）-β-D-glucopyranosyl-（1 → 2）-β-D-glu- copyranoside （2）, on basis of chemical and spectroscopic evidences. 1 and 2 displayed marked inhibitory action towards COX-2 production in macrophages of the rat abdomen induced by LPS at 20 μg/mL.展开更多
基金financially supported by the National Natural Science Foundation of China(No.30670213)Key Scientific Program of China Three Gorges University(No.2005ZD007).
文摘Two furostanol saponins were obtained from the n-butanol fraction of methanol extract from Tupistra chinensis rhizomes, a folk medicine of Shennongjia Forest District of Hubei Province. Their structures were determined as （25S）-26-O-（β-D-glucopyranosyl）- furost-1β, 3β, 22α, 26-tetrol-3-O-β-D-glucopyranosyl-（1 → 4）-β-D-glucopyranosyl-（1 → 2）-β-D-glucopyranoside （1） and （25R）- 26-O-（β-D-glucopyranosyl）-furost-1β, 3β 22a, 26-tetrol 3-O-β-D-glucopyranosyl-（1 → 4）-β-D-glucopyranosyl-（1 → 2）-β-D-glu- copyranoside （2）, on basis of chemical and spectroscopic evidences. 1 and 2 displayed marked inhibitory action towards COX-2 production in macrophages of the rat abdomen induced by LPS at 20 μg/mL.
