Two novel dicarboxylic acid derivatives and a new dimeric hydrolyzable tannin from walnuts

Hideyuki Ito; Takahiro Okuda; Toshiyuki Fukuda; Tsutomu Hatano; Takashi Yoshida

doi:10.1021/jf062872b

Two novel dicarboxylic acid derivatives and a new dimeric hydrolyzable tannin from walnuts

Hideyuki Ito, Takahiro Okuda, Toshiyuki Fukuda, Tsutomu Hatano, Takashi Yoshida

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

74 Citations (Scopus)

Abstract

In addition to the 16 previously reported polyphenols including 3 new ellagitannins, 2 novel dicarboxylic acid derivatives, glansreginins A (1) and B (2), and a new dimeric hydrolyzable tannin, glansrin D (3), were isolated, together with 15 known compounds from walnuts, the seeds of Juglans regia. The structures of the new compounds were elucidated on the basis of 1D- and 2D-NMR analyses and chemical data. The antioxidant effect of these isolates was also evaluated by SOD-like and DPPH radical scavenging activities.

Original language	English
Pages (from-to)	672-679
Number of pages	8
Journal	Journal of agricultural and food chemistry
Volume	55
Issue number	3
DOIs	https://doi.org/10.1021/jf062872b
Publication status	Published - Feb 7 2007
Externally published	Yes

Keywords

2-hydroxycinchoninic acid
Antioxidant activity
Glansreginin A
Glansreginin B
Glansrin D
Juglandaceae
Juglans regia
Radical scavenger
SOD-like effect
Walnuts

ASJC Scopus subject areas

Chemistry(all)
Agricultural and Biological Sciences(all)

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10.1021/jf062872b

Cite this

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title = "Two novel dicarboxylic acid derivatives and a new dimeric hydrolyzable tannin from walnuts",

abstract = "In addition to the 16 previously reported polyphenols including 3 new ellagitannins, 2 novel dicarboxylic acid derivatives, glansreginins A (1) and B (2), and a new dimeric hydrolyzable tannin, glansrin D (3), were isolated, together with 15 known compounds from walnuts, the seeds of Juglans regia. The structures of the new compounds were elucidated on the basis of 1D- and 2D-NMR analyses and chemical data. The antioxidant effect of these isolates was also evaluated by SOD-like and DPPH radical scavenging activities.",

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journal = "Journal of Agricultural and Food Chemistry",

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T1 - Two novel dicarboxylic acid derivatives and a new dimeric hydrolyzable tannin from walnuts

AU - Ito, Hideyuki

AU - Okuda, Takahiro

AU - Fukuda, Toshiyuki

AU - Hatano, Tsutomu

AU - Yoshida, Takashi

PY - 2007/2/7

Y1 - 2007/2/7

N2 - In addition to the 16 previously reported polyphenols including 3 new ellagitannins, 2 novel dicarboxylic acid derivatives, glansreginins A (1) and B (2), and a new dimeric hydrolyzable tannin, glansrin D (3), were isolated, together with 15 known compounds from walnuts, the seeds of Juglans regia. The structures of the new compounds were elucidated on the basis of 1D- and 2D-NMR analyses and chemical data. The antioxidant effect of these isolates was also evaluated by SOD-like and DPPH radical scavenging activities.

AB - In addition to the 16 previously reported polyphenols including 3 new ellagitannins, 2 novel dicarboxylic acid derivatives, glansreginins A (1) and B (2), and a new dimeric hydrolyzable tannin, glansrin D (3), were isolated, together with 15 known compounds from walnuts, the seeds of Juglans regia. The structures of the new compounds were elucidated on the basis of 1D- and 2D-NMR analyses and chemical data. The antioxidant effect of these isolates was also evaluated by SOD-like and DPPH radical scavenging activities.

KW - 2-hydroxycinchoninic acid

KW - Antioxidant activity

KW - Glansreginin A

KW - Glansreginin B

KW - Glansrin D

KW - Juglandaceae

KW - Juglans regia

KW - Radical scavenger

KW - SOD-like effect

KW - Walnuts

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SN - 0021-8561

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JO - Journal of Agricultural and Food Chemistry

JF - Journal of Agricultural and Food Chemistry

IS - 3

ER -

Two novel dicarboxylic acid derivatives and a new dimeric hydrolyzable tannin from walnuts

Abstract

Keywords

ASJC Scopus subject areas

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