Cornusiin A, A Dimeric Ellagitannin Forming Four Tautomers, and Accompanying New Tannins in Cornus Officinalis

Takuo Okuda; Tsutomu Hatano; Noboru Ogawa; Reiko Kira; Muneto Matsuda

doi:10.1248/cpb.32.4662

Cornusiin A, A Dimeric Ellagitannin Forming Four Tautomers, and Accompanying New Tannins in Cornus Officinalis

Takuo Okuda, Tsutomu Hatano, Noboru Ogawa, Reiko Kira, Muneto Matsuda

Research output: Contribution to journal › Article › peer-review

12 Citations (Scopus)

Abstract

Cornusiin A (4), a dimeric ellagitannin which forms four anomeric isomers, have been isolated from Cornus officinalis fruits, along with cornusiin B (5) and related compounds. Their structures and the ratio of tautomers in the equilibrium mixture of 4 were determined. Oenothein C (8), which was produced by partial hydrolysis of 5, has been isolated also from Oenothera erythrosepala leaves.

Original language	English
Pages (from-to)	4662-4665
Number of pages	4
Journal	Chemical and Pharmaceutical Bulletin
Volume	32
Issue number	11
DOIs	https://doi.org/10.1248/cpb.32.4662
Publication status	Published - Jan 1 1984

Keywords

2,3-di-O-galloyl-D-glucose
Cornaceae
Cornus officinalis
Oenothera erythro-sepala
Onagraceae
cornusiin A
cornusiin B
dimeric ellagitannin
oenothein C
tannin

ASJC Scopus subject areas

Chemistry(all)
Drug Discovery

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title = "Cornusiin A, A Dimeric Ellagitannin Forming Four Tautomers, and Accompanying New Tannins in Cornus Officinalis",

abstract = "Cornusiin A (4), a dimeric ellagitannin which forms four anomeric isomers, have been isolated from Cornus officinalis fruits, along with cornusiin B (5) and related compounds. Their structures and the ratio of tautomers in the equilibrium mixture of 4 were determined. Oenothein C (8), which was produced by partial hydrolysis of 5, has been isolated also from Oenothera erythrosepala leaves.",

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AU - Okuda, Takuo

AU - Hatano, Tsutomu

AU - Ogawa, Noboru

AU - Kira, Reiko

AU - Matsuda, Muneto

PY - 1984/1/1

Y1 - 1984/1/1

N2 - Cornusiin A (4), a dimeric ellagitannin which forms four anomeric isomers, have been isolated from Cornus officinalis fruits, along with cornusiin B (5) and related compounds. Their structures and the ratio of tautomers in the equilibrium mixture of 4 were determined. Oenothein C (8), which was produced by partial hydrolysis of 5, has been isolated also from Oenothera erythrosepala leaves.

AB - Cornusiin A (4), a dimeric ellagitannin which forms four anomeric isomers, have been isolated from Cornus officinalis fruits, along with cornusiin B (5) and related compounds. Their structures and the ratio of tautomers in the equilibrium mixture of 4 were determined. Oenothein C (8), which was produced by partial hydrolysis of 5, has been isolated also from Oenothera erythrosepala leaves.

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KW - Cornus officinalis

KW - Oenothera erythro-sepala

KW - Onagraceae

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KW - cornusiin B

KW - dimeric ellagitannin

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Cornusiin A, A Dimeric Ellagitannin Forming Four Tautomers, and Accompanying New Tannins in Cornus Officinalis

Abstract

Keywords

ASJC Scopus subject areas

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