A new dammarane-type triterpenoid saponin, suanzaoside A (1) along with one known analogue 3-O-[α-L-rhamnopyranosyl(1→2)-α-L-arabinopyranosyl-]-30-O-[β-D-glucopyranosyl-(1→2)-β-D-glucopyranosyl]-3β,25,30-trihydroxy-16-one-20R,24R-epoxydammarane (2), were isolated from the leaves of sour jujube. The structure of these isolated compounds was elucidated by HRESIMS, 1D and 2D NMR spectroscopy, and literature comparison. In addition, the anti-inflammatory activities were further tested in LPS-induced RAW264.7 macrophage.
Keywords: Sour jujube; anti-inflammatory activities; dammarane-type triterpenoid saponin; suanzaoside A.