Cowaniin, a C-glucosidic ellagitannin dimer linked through catechin from Cowania mexicana

Hideyuki Ito, Masateru Miyake, Eisei Nishitani, Kyoko Miyashita, Morio Yoshimura, Takashi Yoshida, Midori Takasaki, Takao Konoshima, Mutsuo Kozuka, Tsutomu Hatano

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

A new complex tannin, cowaniin (1) was isolated from the leaves and stems of Cowania mexicana (Rosaceae), and its structure was characterized as novel C-glucosidic tannin dimer linked through (+)-catechin on the basis of spectral and chemical evidence. The inhibitory effect on activation of the Epstein-Barr virus early antigen was assessed for cowaniin. Six known polyphenols and related compounds, including a nitrile glucoside, purshianin, were also characterized.

Original languageEnglish
Pages (from-to)492-494
Number of pages3
JournalChemical and Pharmaceutical Bulletin
Volume55
Issue number3
DOIs
Publication statusPublished - Mar 2007

Fingerprint

Catechin
Tannins
Dimers
Rosaceae
Nitriles
Glucosides
Polyphenols
Chemical activation
cowaniin
ellagitannin
Epstein-Barr virus early antigen

Keywords

  • C-glucosidic ellagitannin dimer
  • Complex tannin
  • Cowania mexicana
  • Cowaniin
  • Epstein-Barr virus
  • Rosaceae

ASJC Scopus subject areas

  • Drug Discovery
  • Organic Chemistry
  • Chemistry(all)
  • Pharmacology

Cite this

Cowaniin, a C-glucosidic ellagitannin dimer linked through catechin from Cowania mexicana. / Ito, Hideyuki; Miyake, Masateru; Nishitani, Eisei; Miyashita, Kyoko; Yoshimura, Morio; Yoshida, Takashi; Takasaki, Midori; Konoshima, Takao; Kozuka, Mutsuo; Hatano, Tsutomu.

In: Chemical and Pharmaceutical Bulletin, Vol. 55, No. 3, 03.2007, p. 492-494.

Research output: Contribution to journalArticle

Ito, H, Miyake, M, Nishitani, E, Miyashita, K, Yoshimura, M, Yoshida, T, Takasaki, M, Konoshima, T, Kozuka, M & Hatano, T 2007, 'Cowaniin, a C-glucosidic ellagitannin dimer linked through catechin from Cowania mexicana', Chemical and Pharmaceutical Bulletin, vol. 55, no. 3, pp. 492-494. https://doi.org/10.1248/cpb.55.492
Ito, Hideyuki ; Miyake, Masateru ; Nishitani, Eisei ; Miyashita, Kyoko ; Yoshimura, Morio ; Yoshida, Takashi ; Takasaki, Midori ; Konoshima, Takao ; Kozuka, Mutsuo ; Hatano, Tsutomu. / Cowaniin, a C-glucosidic ellagitannin dimer linked through catechin from Cowania mexicana. In: Chemical and Pharmaceutical Bulletin. 2007 ; Vol. 55, No. 3. pp. 492-494.
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AU - Yoshida, Takashi

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