Triterpene saponins from Silene gallica collected in North-Eastern Algeria

Eleven previously undescribed triterpene saponins, named silenegallisaponin A-K (1-11), were isolated from the aerial parts of Silene gallica L. Their structures were elucidated by analysis of 1D and 2D-NMR spectroscopic data and mass spectrometry (HR-ESI-MS). The saponins comprised caulophyllogenin, echinocystic acid, or quillaic acid substituted at C-3 by a beta-D-glucuronic acid orko-galactopyranosyl-(1 -> 3)-beta-D-glucuronopyranoside and at C-28 by a beta-D-fucopyranose substituted at C-2 by a beta-D-glucose and at C-3 by a beta-D-glucose or a beta-D-quinovose.