Oleanane-Type Glycosides from Tremastelma palaestinum (L.) Janchen


SENEL G., GÜLCEMAL D. , MASULLO M., PIACENTE S., KARAYILDIRIM T.

CHEMISTRY & BIODIVERSITY, vol.11, no.3, pp.408-418, 2014 (Journal Indexed in SCI) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 11 Issue: 3
  • Publication Date: 2014
  • Doi Number: 10.1002/cbdv.201300121
  • Title of Journal : CHEMISTRY & BIODIVERSITY
  • Page Numbers: pp.408-418

Abstract

Three new oleanane-type glycosides, 1-3, were isolated from the whole plant of Tremastelma palaestinum (L.) Janchen, along with eight known triterpene glycosides. The structures of the new compounds were established as 3-O-[beta-d-glucopyranosyl-(1 -> 3)-alpha-l-rhamnopyranosyl-(1 -> 3)-beta-d-glucopyranosyl-(1 -> 3)-alpha-l-rhamnopyranosyl-(1 -> 2)-alpha-l-arabinopyranosyl]hederagenin (1), 3-O-[beta-d-glucopyranosyl-(1 -> 3)-alpha-l-rhamnopyranosyl-(1 -> 3)-beta-d-glucopyranosyl-(1 -> 3)-alpha-l-rhamnopyranosyl-(1 -> 2)-alpha-l-arabinopyranosyl]hederagenin 28-O-beta-d-glucopyranosyl-(1 -> 6)-beta-d-glucopyranosyl ester (2), and 3-O-[alpha-l-rhamnopyranosyl-(1 -> 3)-beta-d-glucopyranosyl-(1 -> 3)-alpha-l-rhamnopyranosyl-(1 -> 2)-alpha-l-arabinopyranosyl]oleanolic acid 28-O-beta-d-glucopyranosyl-(1 -> 6)-beta-d-glucopyranosyl ester (3) by using 1D- and 2D-NMR techniques and mass spectrometry. This is the first report on the phytochemical investigation of a species belonging to Tremastelma genus.