Cyclopeptide Alkaloids from <i>Paliurus </i><i>r</i><i>amossisimus</i>
作者:Hui-yi Lin、Chung-Hsiung Chen、Bih-Jing You、Karin C. S. Chen Liu、Shoei-Sheng Lee
DOI:10.1021/np000136a
日期:2000.10.1
Seven zizyphine A-type cyclopeptidealkaloids 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