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Four dammarane-type saponins were isolated by means of centrifugal partition chromatography from the root bark of Zizyphus lotus. Their structures were elucidated using a combination of 1D and 2D 1 H and 13 C NMR spectra and mass spectroscopy. One of these glycosides is the known jujuboside A. The others are three new dammarane saponins, identified as 3-O-β-d-glucopyranosyl(1...
Four new cyclopeptide alkaloids, lotusines B, C, E and F, were isolated from the root bark of Zizyphus lotus. Their structures were elucidated mainly by homo- and heteronuclear NMR techniques.
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