Phytochemistry p. 679 - 682 (1986)
Update date:2022-07-29
Topics:
Kasai, Takanori
Shiroshita, Yoshinari
Sakamura, Sadao
It has been reported elsewerw that Vigna radiata seeds contain a high concentration of γ-glutamyl-S-methylcysteine and its sulphoxide and that these compounds serve as index compounds for the chemotaxonomy of V. radiata.Beside these two γ-glutamyl peptides, nine other γ-glutamyl derivatives, of which three are new compounds, have been isolated and identified from V. radiata seeds.The structures of the new peptides, γ-glutamyl-S-methylcysteinyl-β-alanine (S-methylhomoglutathione), γ-glutamyl-Nδ-acetylornithine and γ-glutamyl-γ-glutamyl-S-methylcysteine, were confirmed by direct comparison with synthetic specimens.The other six γ-glutamyl derivatives were homoglutathione, γ-glutamyl glutamic acid, -aspartic acid, -phenylalanine, -leucine and -isoleucine.Key Word Index- Vigna radiata; Leguminosae; seeds; γ-glutamyl peptides; γ-glutamyl-S-methylcystenyl-β-alanine (S-methylhomoglutathione); γ-glutamyl-Nδ-acetylornithine; γ-glutamyl-γ-glutamyl-S-methylcysteine; homoglutathione; γ-glutamyl derivatives.
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