Oleanane type glycosides from Paronychia anatolica subsp. balansae

Four new oleanane-type triterpene glycosides were isolated from the methanol extract of the roots of Paronychia anatolica subsp. balansae along with three known oleanane-type triterpene glycosides. Structures of the new compounds were established as 3-O-β-d-glucuronopyranosyl-28-O-[α-l-rhamnopyranosyl-(1 → 2)-β-d-quinovopyranoside] zahnic acid, 3-O-β-d-glucuronopyranosyl-28-O-[β-d-xylopyranosyl-(1 → 4)-α-l-rhamnopyranosyl-(1 → 2)-β-d-quinovopyranoside] zahnic acid, 3-O-β-d-glucuronopyranosyl-28-O-[α-l-arabinofuranosyl-(1 → 2)-β-d-quinovopyranoside] zahnic acid, 28-O-[α-l-rhamnopyranosyl-(1 → 4)-β-d-glucopyranosyl-(1 → 6)-β-d-glucopyranosyl]-medicagenic acid, by using 1D and 2D-NMR techniques and mass spectrometry. The cytotoxic activity of the isolated compounds was evaluated against a small panel of cancer cell lines including human breast cancer (MCF-7), human lung adenocarcinoma (A549) and human leukemia (U937) cell lines.

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