Two new triterpenoid saponins from Lysimachia davurica

AimTo study the triterpenoid saponins in the whole plant of Lysimachia davurica Ledeb. MethodsColumn chromatography (including AB-8 macroporous resin, silica gel and ODS) was used to separate triterpenoid saponins whose structures were elucidated by ESI-MS, NMR (1D and 2D) and hydrolysis methods. ResultsTwo new triterpenoid saponins were isolated and established as 3β,16α,28-trihydroxy-olean-12-en-3-O-｛β-D-glucopyranosyl-(1→2)-β-D-glucuronopyranosyl｝-28-O-β-D-glucopyranoside｝ (I), 3β,16α,28-trihydroxy-olean-12-en-3-O-｛β-D-glucopyranosyl-(1→2)-β-D-glucuronopyranosyl｝-28-O-β-D-glucopyranoside｝ (II). ConclusionCompounds I and II are new compounds and named as davuricosides D and J.