Geranylated flavanones from the secretion on the surface of the immature fruits of Paulownia tomentosa

Teigo Asai, Noriyuki Hara, Sawa Kobayashi, Shiro Kohshima, Yoshinori Fujimoto

研究成果: Article査読

56 被引用数 (Scopus)

抄録

Chemical investigation of the methanol extract of the viscous secretion on the surface of immature fruits of Paulownia tomentosa furnished nine geranylated flavanones, 6-geranyl-5,7-dihydroxy-3′,4′-dimethoxyflavanone (1), 6-geranyl-3′,5,7-trihydroxy-4′-methoxyflavanone (2), 6-geranyl-4′,5,7-trihydroxy-3′,5′-dimethoxyflavanone (3), 6-geranyl-4′,5,5′,7-tetrahydroxy-3′-methoxyflavanone (4), 6-geranyl-3,3′,5,7-tetrahydroxy-4′-methoxyflavanone (5), 4′,5,5′,7-tetrahydroxy-6-[6-hydroxy-3,7-dimethyl-2(E),7-octadienyl]-3′-methoxyflavanone (6), 3,3′,4′,5,7-pentahydroxy-6-[6-hydroxy-3,7-dimethyl-2(E),7-octadienyl]flavanone (7), 3,3′,4′,5,7-pentahydroxy-6-[7-hydroxy-3,7-dimethyl-2(E)-octenyl]flavanone (8), and 3,4′,5,5′,7-pentahydroxy-3′-methoxy-6-(3-methyl-2-butenyl)flavanone (9), along with six known geranylated flavanones. Among these, compounds 4, 6-9 and the known 6-geranyl-3′,4′,5,7-tetraahydroxyflavanone (diplacone), 6-geranyl-3,3′,4′,5,7-pentahydroxyflavanone (diplacol) and 3′,4′,5,7-pentahydroxy-6-[7-hydroxy-3,7-dimethyl-2(E)-octenyl]flavanone showed potent radical scavenging effects towards DPPH radicals.

本文言語English
ページ(範囲)1234-1241
ページ数8
ジャーナルPhytochemistry
69
5
DOI
出版ステータスPublished - 2008 3月 1
外部発表はい

ASJC Scopus subject areas

  • 生化学
  • 分子生物学
  • 植物科学
  • 園芸学

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