Cyclopeptide alkaloids from Paliurus ramossisimus
Journal
Journal of Natural Products
Journal Volume
63
Journal Issue
10
Pages
1338-1343
Date Issued
2000
Author(s)
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.
Type
journal article