Structural studies of zoospore attractants from Trachelospermum jasminoides var. pubescens: Taxifolin 3-O-glycosides

Hosoi S., Shimizu E., Ohno K., Yokosawa R., Kuninaga S., Coskun M., ...Daha Fazla

PHYTOCHEMICAL ANALYSIS, cilt.17, sa.1, ss.20-24, 2006 (SCI-Expanded, Scopus) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 17 Sayı: 1
  • Basım Tarihi: 2006
  • Doi Numarası: 10.1002/pca.876
  • Dergi Adı: PHYTOCHEMICAL ANALYSIS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.20-24
  • Anahtar Kelimeler: absolute configuration, dihydroflavonol glycosides, (2S, 3S)-taxifolin 3-O-arabinoside, Trachelospermum jasminoides var. pubescens : biological effects, zoospore attractants
  • Ankara Üniversitesi Adresli: Hayır

Özet

(2S, 3S)-Taxifolin 3-O-arabinoside, a new dihydroflavonol glycoside, together with the known substances, (2R, 3R)-taxifolin 3-O-arabinoside, astragalin, isoquercitrin, and cosmosiin, were isolated from the leaves of Trachelospermum jasminoides var. pubescens. Structural elucidation was carried out by spectroscopic methods, and the absolute configurations of C-2 and C-3 in taxifolin 3-O-arabinosides were determined on the basis of circular dichroism. Unlike the dihydroflavonol glycosides, (2R, 3R)taxifolin 3-O-glucoside and (2R, 3R)-taxifolin 3-O-arabinoside, the novel (2S, 3S)-taxifolin 3-O-arabinoside is not effective as a zoospore attractant of the plant pathogenic fungus Aphanomyces cochlioides. Copyright (c) 2005 John Wiley & Sons, Ltd.