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One new triterpenoid sapoin with two known triterpenoid sapoins:3β-O-{α-L-rhamnopyranosyl-(1→3)-[β-D-xylopyranose-(1→2)]-β-D-glucopyranosyl-(1→4)-α-L-arabinopyranosyl}-3β-hydroxy-13β,28-epoxy-oleanan-16-oxo-30-al(1),3β-O-{α-L-rhamnopyranosyl-(1→3)-[(β-D-xylopyranosyl-(1→2)]-β-D-galactopyranosyl-(1→4)-[(β-D-glucopyranosyl-(1→2)]-α-L-ara-binopyranoside}-16α-hydroxy-13,28-epoxy-oleanane(2) and cyclamiretin A 3β-O-α-L-rhamnopyranosyl-(l→3)-[P-D-xylopyranosyl-(1→2)]-β-D-glucopyranosyl-(1→4)-[β-D-glucopyranosyl-(1→2)]-α-L-arabinopyranoside(3) were isolated fromArdisia gigantifolia Stapf.Their structures were elucidated by means of ~1H and ~(13)C NMR spectroscopic studies,including2D-NMR technique.
One new triterpenoid sapoin with two known triterpenoid sapoins: 3β-O- {α-L-rhamnopyranosyl- (1 → 3) - [β-D- xylopyranose- (1 → 2)] - β-D-glucopyranosyl- 4 -α-L-arabinopyranosyl-3β-hydroxy-13β, 28-epoxy-oleanan-16-oxo-30-al [β-D-xylopyranosyl- (1 → 2)] - β-D-galactopyranosyl- (1 → 4) - [β-D-glucopyranosyl- (1 → 2)] - α-L-ara-binopyranoside} -16α-hydroxy-13,28-epoxy-oleanane (2) and cyclamiretin A 3β-O-α-L-rhamnopyranosyl- (l → 3) - [PD-xylopyranosyl- (1 → 2)] - glucopyranosyl- (1 → 4) - [β-D-glucopyranosyl- (1 → 2)] - α-L-arabinopyranoside (3) were isolated from Ardisia gigantifolia Stapf.Their structures were elucidated by means of ~ 1H and ~ (13) C NMR spectroscopic studies, including 2D-NMR technique.