Cyclopeptide Alkaloids from Paliurus r amossisimus

Seven zizyphine A-type cyclopeptide alkaloids were isolated from the roots of Paliurus ramossisimus by the combination of centrifugal partition chromatography and conventional separation methods. The novel structures of paliurines A−F (1−6) were characterized and established on the basis of MS and e...

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Bibliographic Details
Published in:Journal of natural products (Washington, D.C.) D.C.), 2000-10, Vol.63 (10), p.1338-1343
Main Authors: Lin, Hui-yi, Chen, Chung-Hsiung, You, Bih-Jing, Liu, Karin C. S. Chen, Lee, Shoei-Sheng
Format: Article
Language:English
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Summary:Seven zizyphine A-type cyclopeptide alkaloids were isolated from the roots of Paliurus ramossisimus by the combination of centrifugal partition chromatography and conventional separation methods. The novel structures of paliurines A−F (1−6) were characterized and established on the basis of MS and elaborate NMR spectral analyses. Terminal dipeptide stereochemistry was confirmed by correlation with the synthetic dipeptides via comparison of their 13C NMR data.
ISSN:0163-3864
1520-6025
DOI:10.1021/np000136a