New polyhydroxylated furostanol saponins with inhibitory action against NO production from Tupistra chinensis rhizomes

Abstract

Two furostanol saponins were obtained from the rhizomes of Tupistra chinensis Bak. Their structures were determined as 5β-furost- Δ25(27)-en-1β,2β,3β,4β,5β,7α, 22ξ,26-octaol-6-one-26-O-β-D-glucopyranoside (1) and 5β-furost-Δ25(27)-en-1β,2β,3β,4β, 5β,6β,7α,22ξ,26-nonaol-26-O-β-D-glucopyranoside (2), on the basis of chemical and spectroscopic evidence. Both compounds displayed marked inhibitory action against NO production in rat abdomen macrophages induced by lipopolysaccharide (LPS) at 40 μg/mL. © 2007 by MDPI.