Physocalycoside, a new phenylethanoid glycoside from Phlomis physocalyx Hub.-Mor.

نویسندگان

  • Tayfun Ersöz
  • Kalina Iv Alipieva
  • Funda Nuray Yalçin
  • Pinar Akbay
  • Nedjalka Handjieva
  • Ali A Dönmez
  • Simeon Popov
  • Ihsan Caliş
چکیده

A new phenylethanoid tetraglycoside, physocalycoside (2), was isolated from the aerial parts of Phlomis physocalyx. Its structure was identified as 3-hydroxy-4-methoxy-beta-phenylethoxy-O-[alpha-L-rhamnopyranosyl-(1-->2)-alpha-L-rhamnopyranosyl-(1-->3)]-4-O-feruloyl-[beta-D-glucopyranosyl-(1-->6)]-beta-D-glucopyranoside, on the basis of spectroscopic evidence. In addition, one known iridoid glucoside, lamiide (1) and five known phenylethanoid glycosides, wiedemannioside C (3), verbascoside (= acteoside) (4), leucosceptoside A (5), martynoside (6), and forsythoside B (7) were also characterized. Compounds 2-7 demonstrated radical scavenging properties towards the 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical.

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عنوان ژورنال:
  • Zeitschrift fur Naturforschung. C, Journal of biosciences

دوره 58 7-8  شماره 

صفحات  -

تاریخ انتشار 2003