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. 2000 Oct;63(10):1338-43.
doi: 10.1021/np000136a.

Cyclopeptide alkaloids from Paliurus ramossisimus

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Cyclopeptide alkaloids from Paliurus ramossisimus

H Y Lin et al. J Nat Prod. 2000 Oct.

Abstract

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 (13)C NMR data.

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