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

doi:10.1248/cpb.55.492

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 journal › Article

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 language	English
Pages (from-to)	492-494
Number of pages	3
Journal	Chemical and Pharmaceutical Bulletin
Volume	55
Issue number	3
DOIs	https://doi.org/10.1248/cpb.55.492
Publication status	Published - Mar 1 2007

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Keywords

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

ASJC Scopus subject areas

Chemistry(all)
Drug Discovery

Cite this

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, 55(3), 492-494. https://doi.org/10.1248/cpb.55.492

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, 01.03.2007, p. 492-494.

Research output: Contribution to journal › Article

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10.1248/cpb.55.492