Structures of New Cyclic Peptides in Young Unshiu (Citrus unshiu MARCOV.), Orange (Citrus sinensis OSBECK.) and Amanatsu (Citrus natsudaidai) Peelings

Yoshiharu MATSUBARA; Takehiko YUSA; Akiyoshi SAWABE; Yoshitomi IIZUKA; Shin-ichi TAKEKUMA; Yasuji YOSHIDA

doi:10.1271/bbb1961.55.2923

Agricultural and Biological Chemistry

Online ISSN : 1881-1280
Print ISSN : 0002-1369
ISSN-L : 0002-1369

Structures of New Cyclic Peptides in Young Unshiu (Citrus unshiu MARCOV.), Orange (Citrus sinensis OSBECK.) and Amanatsu (Citrus natsudaidai) Peelings

Yoshiharu MATSUBARA, Takehiko YUSA, Akiyoshi SAWABE, Yoshitomi IIZUKA, Shin-ichi TAKEKUMA, Yasuji YOSHIDA

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JOURNAL FREE ACCESS

1991 Volume 55 Issue 12 Pages 2923-2929

DOI https://doi.org/10.1271/bbb1961.55.2923

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Abstract

Four cyclic peptides were isolated from young unshiu (unripe fruit), orange and amanatsu peelings, and their structures were established on the basis of FAB-MS (CID method) and 2D-NMR spectroscopic data, and by chemical evidence. They were each found to consist of seven or eight amino acids.
In the present study, compounds 1-4 are shown to be new cyclic Peptides.

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