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      Cyclic peptides, acyclic diterpene glycosides and other compounds from Lycium chinense Mill.

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          Abstract

          The chemical structures of four cyclic peptides, lyciumins A-D (1-4), three acyclic diterpene glycosides, lyciumosides I-III (5-7) and other three compounds, a tryptophan derivative glycoside (8), a monoterpene glycoside (9) and a steroidal glycoside (10) isolated from Lycium chinense, have been elucidated by a combination of chemical, 1H- and 13C-NMR, and mass spectrometric studies. Lyciumins are interesting because of their monocyclic octapeptides containing a novel C-N linkage between tryprophan N1 and glycine C alpha.

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          Author and article information

          Journal
          Chem. Pharm. Bull.
          Chemical & pharmaceutical bulletin
          0009-2363
          0009-2363
          Apr 1993
          : 41
          : 4
          Affiliations
          [1 ] Faculty of Pharmaceutical Sciences, Kumamoto University, Japan.
          Article
          8508472

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