Triterpene glycosides from the roots of Astragalus flavescens


AVUNDUK S., MITAINE-OFFER A., Alankus-Caliskan Ö. , Miyamoto T., Senol S. G. , LACAILLE-DUBOIS M.

JOURNAL OF NATURAL PRODUCTS, cilt.71, ss.141-145, 2008 (SCI İndekslerine Giren Dergi)

  • Cilt numarası: 71 Konu: 1
  • Basım Tarihi: 2008
  • Doi Numarası: 10.1021/np0703500
  • Dergi Adı: JOURNAL OF NATURAL PRODUCTS
  • Sayfa Sayısı: ss.141-145

Özet

Six new triterpene saponins, 3-O-alpha-L-rhamnopyranosyl-(1 -> 2)-beta-D-Xylopyranosyl-(1 -> 2)-beta-D-glucuronopyranosyl-21-epi-kudzusapogenol A (1), 3-O-alpha-L-rhamnopyranosyl-(1 -> 2)-beta-D-glucopyranosyl-(1 -> 2)-beta-D-glucuronopyranosyl-21-epi-kudzusapogenol A (2), 3-O-alpha-L-rhamnopyranosyl-(1 -> 2)-beta-D-Xylopyranosyl-(1 -> 2)-beta-D-glueuronopyranosyl-22-beta-D-glucopyranosyl-21-epi-kudzusapogenoI A (3), 3-O-alpha-L-rhamnopyranosyl-(1 -> 2)-beta-D-glueopyranosyl-(1 -> 2)-beta-D-glucuronopyranosy1-22-O-alpha-D-glucopyranosyl-21-epi-kudzusapogenol A (4), 3-O-alpha-L-rhamnopyranosyl-(1 -> 2)-beta-D-xylopyranosyl-(1 -> 2)-beta-D-glucuronopyranosyl-22-O-alpha-L-arabinopyranosyl-21-epi-kudzusapogenol A (5), and 3-O-alpha-L-rhamnopyranosyl-(1-2)-beta-D-glucopyranosyl-(1-2)-beta-D-glueuronopyranosyl-22-O-alpha-L-arabinopyranosyl-21-epi-kudzusapogenol A (6), were isolated from the roots of Astragalus flavescens, together with the known trajanoside B, azukisaponin V, and astragalosides IV, VII, and VIII. Their structures were established mainly by 2D NMR techniques and mass spectrometry.